./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/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_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/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_54de6976-6194-4cdd-af65-48b8e175ca16/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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:52:04,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:52:04,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:52:04,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:52:04,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:52:04,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:52:04,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:52:04,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:52:04,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:52:04,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:52:04,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:52:04,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:52:04,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:52:04,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:52:04,159 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:52:04,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:52:04,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:52:04,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:52:04,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:52:04,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:52:04,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:52:04,161 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:52:04,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:52:04,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:04,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:52:04,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:52:04,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:52:04,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:52:04,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:04,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:52:04,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:52:04,163 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:52:04,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:52:04,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:52:04,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:52:04,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:52:04,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:52:04,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:52:04,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:52:04,164 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_54de6976-6194-4cdd-af65-48b8e175ca16/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 -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2024-11-28 04:52:04,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:52:04,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:52:04,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:52:04,502 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:52:04,502 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:52:04,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-28 04:52:07,426 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/data/4ea372efd/e1a02220c4b04d9487647133d54d2e9d/FLAG2c6ee2ba2 [2024-11-28 04:52:07,937 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:52:07,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-28 04:52:07,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/data/4ea372efd/e1a02220c4b04d9487647133d54d2e9d/FLAG2c6ee2ba2 [2024-11-28 04:52:07,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/data/4ea372efd/e1a02220c4b04d9487647133d54d2e9d [2024-11-28 04:52:08,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:52:08,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:52:08,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:52:08,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:52:08,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:52:08,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:07" (1/1) ... [2024-11-28 04:52:08,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6105c26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:08, skipping insertion in model container [2024-11-28 04:52:08,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:07" (1/1) ... [2024-11-28 04:52:08,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:52:08,385 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_54de6976-6194-4cdd-af65-48b8e175ca16/sv-benchmarks/c/eca-rers2012/Problem17_label08.c[8572,8585] [2024-11-28 04:52:09,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:52:09,207 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:52:09,273 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_54de6976-6194-4cdd-af65-48b8e175ca16/sv-benchmarks/c/eca-rers2012/Problem17_label08.c[8572,8585] [2024-11-28 04:52:09,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:52:09,601 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:52:09,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09 WrapperNode [2024-11-28 04:52:09,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:52:09,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:52:09,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:52:09,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:52:09,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:09,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:09,924 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-28 04:52:09,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:52:09,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:52:09,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:52:09,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:52:09,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:09,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:09,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,228 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:52:10,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,383 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:52:10,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:52:10,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:52:10,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:52:10,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (1/1) ... [2024-11-28 04:52:10,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:10,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:10,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:52:10,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:52:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:52:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:52:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:52:10,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:52:10,771 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:52:10,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:52:15,932 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-28 04:52:15,933 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:52:15,981 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:52:15,984 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:52:15,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:52:15 BoogieIcfgContainer [2024-11-28 04:52:15,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:52:15,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:52:15,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:52:15,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:52:15,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:52:07" (1/3) ... [2024-11-28 04:52:16,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330d70b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:52:16, skipping insertion in model container [2024-11-28 04:52:16,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:09" (2/3) ... [2024-11-28 04:52:16,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330d70b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:52:16, skipping insertion in model container [2024-11-28 04:52:16,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:52:15" (3/3) ... [2024-11-28 04:52:16,003 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2024-11-28 04:52:16,023 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:52:16,026 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label08.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:52:16,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:52:16,172 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;@4c86171e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:52:16,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:52:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:52:16,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:16,195 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:16,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:16,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2024-11-28 04:52:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645686439] [2024-11-28 04:52:16,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:16,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645686439] [2024-11-28 04:52:16,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645686439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:16,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:52:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784166706] [2024-11-28 04:52:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:16,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:16,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:16,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:16,904 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:20,379 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-28 04:52:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-28 04:52:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:20,401 INFO L225 Difference]: With dead ends: 1642 [2024-11-28 04:52:20,401 INFO L226 Difference]: Without dead ends: 975 [2024-11-28 04:52:20,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:52:20,411 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 432 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:20,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:52:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-28 04:52:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-28 04:52:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-28 04:52:20,498 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 58 [2024-11-28 04:52:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:20,499 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-28 04:52:20,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-28 04:52:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:52:20,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:20,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:20,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:52:20,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:20,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1002261606, now seen corresponding path program 1 times [2024-11-28 04:52:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740167729] [2024-11-28 04:52:20,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:21,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740167729] [2024-11-28 04:52:21,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740167729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:21,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:21,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793866505] [2024-11-28 04:52:21,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:21,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:21,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:21,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:21,072 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:24,013 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-28 04:52:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:24,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-28 04:52:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:24,022 INFO L225 Difference]: With dead ends: 2814 [2024-11-28 04:52:24,023 INFO L226 Difference]: Without dead ends: 1844 [2024-11-28 04:52:24,024 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 04:52:24,027 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 433 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:24,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:52:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-28 04:52:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-28 04:52:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-28 04:52:24,129 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 128 [2024-11-28 04:52:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:24,136 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-28 04:52:24,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-28 04:52:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:52:24,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:24,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:24,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:52:24,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:24,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash -433901431, now seen corresponding path program 1 times [2024-11-28 04:52:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:24,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656338831] [2024-11-28 04:52:24,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:24,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:24,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:24,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656338831] [2024-11-28 04:52:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656338831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:24,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:52:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641649261] [2024-11-28 04:52:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:24,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:24,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:24,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:24,490 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:27,361 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-28 04:52:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-28 04:52:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:27,375 INFO L225 Difference]: With dead ends: 5395 [2024-11-28 04:52:27,375 INFO L226 Difference]: Without dead ends: 2701 [2024-11-28 04:52:27,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:52:27,378 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:27,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:52:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-28 04:52:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-28 04:52:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-28 04:52:27,438 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 150 [2024-11-28 04:52:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:27,439 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-28 04:52:27,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-28 04:52:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-28 04:52:27,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:27,443 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:27,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:52:27,443 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:27,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1641598275, now seen corresponding path program 1 times [2024-11-28 04:52:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363814957] [2024-11-28 04:52:27,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363814957] [2024-11-28 04:52:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363814957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026449896] [2024-11-28 04:52:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:27,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:27,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:27,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:27,871 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:30,065 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-28 04:52:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-11-28 04:52:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:30,083 INFO L225 Difference]: With dead ends: 7108 [2024-11-28 04:52:30,084 INFO L226 Difference]: Without dead ends: 4409 [2024-11-28 04:52:30,087 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 04:52:30,089 INFO L435 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:30,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:52:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-28 04:52:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-28 04:52:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-28 04:52:30,176 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 210 [2024-11-28 04:52:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:30,177 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-28 04:52:30,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-28 04:52:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-28 04:52:30,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:30,181 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:30,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:52:30,181 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:30,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash 734182776, now seen corresponding path program 1 times [2024-11-28 04:52:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551013267] [2024-11-28 04:52:30,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 04:52:30,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551013267] [2024-11-28 04:52:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551013267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:30,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658460706] [2024-11-28 04:52:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:30,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:30,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:30,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:30,637 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:33,056 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-28 04:52:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2024-11-28 04:52:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:33,076 INFO L225 Difference]: With dead ends: 10936 [2024-11-28 04:52:33,076 INFO L226 Difference]: Without dead ends: 6528 [2024-11-28 04:52:33,081 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 04:52:33,083 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 393 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:33,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:52:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-28 04:52:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-28 04:52:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-28 04:52:33,186 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 212 [2024-11-28 04:52:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:33,186 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-28 04:52:33,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-28 04:52:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:52:33,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:33,195 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:33,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:52:33,195 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:33,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1597642430, now seen corresponding path program 1 times [2024-11-28 04:52:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866610920] [2024-11-28 04:52:33,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:52:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866610920] [2024-11-28 04:52:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866610920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:33,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:33,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:33,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532747390] [2024-11-28 04:52:33,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:33,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:33,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:33,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:33,644 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:36,055 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2024-11-28 04:52:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2024-11-28 04:52:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:36,072 INFO L225 Difference]: With dead ends: 10045 [2024-11-28 04:52:36,072 INFO L226 Difference]: Without dead ends: 5665 [2024-11-28 04:52:36,079 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 04:52:36,079 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 378 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:36,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:52:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2024-11-28 04:52:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2024-11-28 04:52:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2024-11-28 04:52:36,177 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 278 [2024-11-28 04:52:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:36,178 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2024-11-28 04:52:36,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2024-11-28 04:52:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-28 04:52:36,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:36,184 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:36,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:52:36,185 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:36,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1503094523, now seen corresponding path program 1 times [2024-11-28 04:52:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485875471] [2024-11-28 04:52:36,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:52:36,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:36,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485875471] [2024-11-28 04:52:36,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485875471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:36,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293660942] [2024-11-28 04:52:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:36,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:36,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:36,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:36,793 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:39,199 INFO L93 Difference]: Finished difference Result 13051 states and 15223 transitions. [2024-11-28 04:52:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2024-11-28 04:52:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:39,216 INFO L225 Difference]: With dead ends: 13051 [2024-11-28 04:52:39,216 INFO L226 Difference]: Without dead ends: 7391 [2024-11-28 04:52:39,220 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 04:52:39,220 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 495 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:39,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 629 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:52:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2024-11-28 04:52:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6959. [2024-11-28 04:52:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6958 states have (on average 1.1636964645012935) internal successors, (8097), 6958 states have internal predecessors, (8097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 8097 transitions. [2024-11-28 04:52:39,339 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 8097 transitions. Word has length 290 [2024-11-28 04:52:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:39,340 INFO L471 AbstractCegarLoop]: Abstraction has 6959 states and 8097 transitions. [2024-11-28 04:52:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 8097 transitions. [2024-11-28 04:52:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-28 04:52:39,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:39,346 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:39,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:52:39,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:39,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 9506808, now seen corresponding path program 1 times [2024-11-28 04:52:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376974583] [2024-11-28 04:52:39,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:52:39,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:39,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376974583] [2024-11-28 04:52:39,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376974583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:39,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:39,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792166621] [2024-11-28 04:52:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:39,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:39,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:39,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:39,669 INFO L87 Difference]: Start difference. First operand 6959 states and 8097 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:41,834 INFO L93 Difference]: Finished difference Result 17316 states and 20393 transitions. [2024-11-28 04:52:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-28 04:52:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:41,864 INFO L225 Difference]: With dead ends: 17316 [2024-11-28 04:52:41,864 INFO L226 Difference]: Without dead ends: 10359 [2024-11-28 04:52:41,868 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 04:52:41,869 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 379 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:41,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 841 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:52:41,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10359 states. [2024-11-28 04:52:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10359 to 9509. [2024-11-28 04:52:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9508 states have (on average 1.141459823306689) internal successors, (10853), 9508 states have internal predecessors, (10853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 10853 transitions. [2024-11-28 04:52:42,120 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 10853 transitions. Word has length 295 [2024-11-28 04:52:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:42,121 INFO L471 AbstractCegarLoop]: Abstraction has 9509 states and 10853 transitions. [2024-11-28 04:52:42,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:42,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 10853 transitions. [2024-11-28 04:52:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-28 04:52:42,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:42,137 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 04:52:42,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:52:42,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:42,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash -881276880, now seen corresponding path program 1 times [2024-11-28 04:52:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143812356] [2024-11-28 04:52:42,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:52:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143812356] [2024-11-28 04:52:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143812356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:42,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:42,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485446773] [2024-11-28 04:52:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:42,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:42,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:42,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:42,740 INFO L87 Difference]: Start difference. First operand 9509 states and 10853 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:45,394 INFO L93 Difference]: Finished difference Result 22432 states and 25678 transitions. [2024-11-28 04:52:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2024-11-28 04:52:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:45,425 INFO L225 Difference]: With dead ends: 22432 [2024-11-28 04:52:45,426 INFO L226 Difference]: Without dead ends: 12493 [2024-11-28 04:52:45,435 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 04:52:45,438 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 444 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:45,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 294 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:52:45,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12493 states. [2024-11-28 04:52:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12493 to 11637. [2024-11-28 04:52:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11637 states, 11636 states have (on average 1.1473014781711928) internal successors, (13350), 11636 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 13350 transitions. [2024-11-28 04:52:45,701 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 13350 transitions. Word has length 313 [2024-11-28 04:52:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:45,702 INFO L471 AbstractCegarLoop]: Abstraction has 11637 states and 13350 transitions. [2024-11-28 04:52:45,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 13350 transitions. [2024-11-28 04:52:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-28 04:52:45,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:45,714 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 04:52:45,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:52:45,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:45,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1943349219, now seen corresponding path program 1 times [2024-11-28 04:52:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159261853] [2024-11-28 04:52:45,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:52:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159261853] [2024-11-28 04:52:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159261853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:46,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:46,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:52:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479498861] [2024-11-28 04:52:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:46,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:52:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:46,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:52:46,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:52:46,472 INFO L87 Difference]: Start difference. First operand 11637 states and 13350 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:50,150 INFO L93 Difference]: Finished difference Result 41232 states and 47494 transitions. [2024-11-28 04:52:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:52:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-28 04:52:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:50,191 INFO L225 Difference]: With dead ends: 41232 [2024-11-28 04:52:50,191 INFO L226 Difference]: Without dead ends: 28316 [2024-11-28 04:52:50,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:52:50,204 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 867 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:50,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 302 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 04:52:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28316 states. [2024-11-28 04:52:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28316 to 27841. [2024-11-28 04:52:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 27840 states have (on average 1.135308908045977) internal successors, (31607), 27840 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 31607 transitions. [2024-11-28 04:52:50,552 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 31607 transitions. Word has length 318 [2024-11-28 04:52:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:50,553 INFO L471 AbstractCegarLoop]: Abstraction has 27841 states and 31607 transitions. [2024-11-28 04:52:50,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 31607 transitions. [2024-11-28 04:52:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-28 04:52:50,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:50,561 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:50,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:52:50,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:50,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2094585251, now seen corresponding path program 1 times [2024-11-28 04:52:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:50,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241464443] [2024-11-28 04:52:50,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:52:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241464443] [2024-11-28 04:52:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241464443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640688815] [2024-11-28 04:52:51,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:51,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:51,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:51,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:51,017 INFO L87 Difference]: Start difference. First operand 27841 states and 31607 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:53,465 INFO L93 Difference]: Finished difference Result 71054 states and 80878 transitions. [2024-11-28 04:52:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-28 04:52:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:53,521 INFO L225 Difference]: With dead ends: 71054 [2024-11-28 04:52:53,522 INFO L226 Difference]: Without dead ends: 42777 [2024-11-28 04:52:53,539 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 04:52:53,540 INFO L435 NwaCegarLoop]: 654 mSDtfsCounter, 449 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:53,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 704 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:52:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42777 states. [2024-11-28 04:52:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42777 to 41033. [2024-11-28 04:52:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41033 states, 41032 states have (on average 1.122514135309027) internal successors, (46059), 41032 states have internal predecessors, (46059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41033 states to 41033 states and 46059 transitions. [2024-11-28 04:52:54,177 INFO L78 Accepts]: Start accepts. Automaton has 41033 states and 46059 transitions. Word has length 347 [2024-11-28 04:52:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:54,178 INFO L471 AbstractCegarLoop]: Abstraction has 41033 states and 46059 transitions. [2024-11-28 04:52:54,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 41033 states and 46059 transitions. [2024-11-28 04:52:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-28 04:52:54,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:54,186 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:54,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:52:54,187 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:54,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 886548778, now seen corresponding path program 1 times [2024-11-28 04:52:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070731797] [2024-11-28 04:52:54,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 04:52:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070731797] [2024-11-28 04:52:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070731797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961527108] [2024-11-28 04:52:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:54,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:54,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:54,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:54,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,520 INFO L87 Difference]: Start difference. First operand 41033 states and 46059 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:56,855 INFO L93 Difference]: Finished difference Result 91426 states and 102896 transitions. [2024-11-28 04:52:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:56,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2024-11-28 04:52:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:56,927 INFO L225 Difference]: With dead ends: 91426 [2024-11-28 04:52:56,927 INFO L226 Difference]: Without dead ends: 49966 [2024-11-28 04:52:56,947 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 04:52:56,948 INFO L435 NwaCegarLoop]: 676 mSDtfsCounter, 440 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:56,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 727 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:52:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49966 states. [2024-11-28 04:52:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49966 to 49959. [2024-11-28 04:52:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49959 states, 49958 states have (on average 1.1129548821009647) internal successors, (55601), 49958 states have internal predecessors, (55601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49959 states to 49959 states and 55601 transitions. [2024-11-28 04:52:57,770 INFO L78 Accepts]: Start accepts. Automaton has 49959 states and 55601 transitions. Word has length 391 [2024-11-28 04:52:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:57,771 INFO L471 AbstractCegarLoop]: Abstraction has 49959 states and 55601 transitions. [2024-11-28 04:52:57,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 49959 states and 55601 transitions. [2024-11-28 04:52:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-28 04:52:57,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:57,783 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:57,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:52:57,784 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:57,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1094283383, now seen corresponding path program 1 times [2024-11-28 04:52:57,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627543457] [2024-11-28 04:52:57,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 04:52:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627543457] [2024-11-28 04:52:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627543457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234538761] [2024-11-28 04:52:58,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:58,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:58,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:58,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:52:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:58,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:52:58,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 04:52:59,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 04:52:59,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234538761] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:59,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:52:59,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-28 04:52:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882125456] [2024-11-28 04:52:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:59,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:52:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:59,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:52:59,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:52:59,939 INFO L87 Difference]: Start difference. First operand 49959 states and 55601 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:03,550 INFO L93 Difference]: Finished difference Result 120772 states and 134197 transitions. [2024-11-28 04:53:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:53:03,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2024-11-28 04:53:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:03,605 INFO L225 Difference]: With dead ends: 120772 [2024-11-28 04:53:03,605 INFO L226 Difference]: Without dead ends: 69946 [2024-11-28 04:53:03,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:03,629 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 738 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:03,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 155 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 04:53:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69946 states. [2024-11-28 04:53:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69946 to 67818. [2024-11-28 04:53:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67818 states, 67817 states have (on average 1.0979105534010647) internal successors, (74457), 67817 states have internal predecessors, (74457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67818 states to 67818 states and 74457 transitions. [2024-11-28 04:53:04,421 INFO L78 Accepts]: Start accepts. Automaton has 67818 states and 74457 transitions. Word has length 394 [2024-11-28 04:53:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:04,422 INFO L471 AbstractCegarLoop]: Abstraction has 67818 states and 74457 transitions. [2024-11-28 04:53:04,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 67818 states and 74457 transitions. [2024-11-28 04:53:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-28 04:53:04,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:04,430 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:04,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:04,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:53:04,635 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:04,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1101543085, now seen corresponding path program 1 times [2024-11-28 04:53:04,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486362394] [2024-11-28 04:53:04,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:53:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486362394] [2024-11-28 04:53:05,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486362394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128022627] [2024-11-28 04:53:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:05,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:05,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:05,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:05,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:05,444 INFO L87 Difference]: Start difference. First operand 67818 states and 74457 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:07,746 INFO L93 Difference]: Finished difference Result 139463 states and 153018 transitions. [2024-11-28 04:53:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 424 [2024-11-28 04:53:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:07,801 INFO L225 Difference]: With dead ends: 139463 [2024-11-28 04:53:07,801 INFO L226 Difference]: Without dead ends: 71647 [2024-11-28 04:53:07,829 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 04:53:07,830 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 358 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:07,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 349 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:53:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71647 states. [2024-11-28 04:53:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71647 to 70791. [2024-11-28 04:53:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70791 states, 70790 states have (on average 1.09598813391722) internal successors, (77585), 70790 states have internal predecessors, (77585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70791 states to 70791 states and 77585 transitions. [2024-11-28 04:53:08,516 INFO L78 Accepts]: Start accepts. Automaton has 70791 states and 77585 transitions. Word has length 424 [2024-11-28 04:53:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:08,516 INFO L471 AbstractCegarLoop]: Abstraction has 70791 states and 77585 transitions. [2024-11-28 04:53:08,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 70791 states and 77585 transitions. [2024-11-28 04:53:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-28 04:53:08,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:08,521 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:53:08,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:53:08,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:08,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash 186174739, now seen corresponding path program 1 times [2024-11-28 04:53:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:08,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374442904] [2024-11-28 04:53:08,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:08,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 04:53:08,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:08,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374442904] [2024-11-28 04:53:08,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374442904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:08,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:08,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:08,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648457816] [2024-11-28 04:53:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:08,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:08,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:08,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:08,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:08,950 INFO L87 Difference]: Start difference. First operand 70791 states and 77585 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:11,368 INFO L93 Difference]: Finished difference Result 148384 states and 162924 transitions. [2024-11-28 04:53:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2024-11-28 04:53:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:11,429 INFO L225 Difference]: With dead ends: 148384 [2024-11-28 04:53:11,429 INFO L226 Difference]: Without dead ends: 76741 [2024-11-28 04:53:11,449 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 04:53:11,449 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 448 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:11,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 611 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:53:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76741 states. [2024-11-28 04:53:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76741 to 66506. [2024-11-28 04:53:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66506 states, 66505 states have (on average 1.0966694233516276) internal successors, (72934), 66505 states have internal predecessors, (72934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66506 states to 66506 states and 72934 transitions. [2024-11-28 04:53:12,527 INFO L78 Accepts]: Start accepts. Automaton has 66506 states and 72934 transitions. Word has length 433 [2024-11-28 04:53:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:12,528 INFO L471 AbstractCegarLoop]: Abstraction has 66506 states and 72934 transitions. [2024-11-28 04:53:12,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 66506 states and 72934 transitions. [2024-11-28 04:53:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-28 04:53:12,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:12,542 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:53:12,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:53:12,543 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:12,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1324595424, now seen corresponding path program 1 times [2024-11-28 04:53:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:12,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679003512] [2024-11-28 04:53:12,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 04:53:13,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679003512] [2024-11-28 04:53:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679003512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49394617] [2024-11-28 04:53:13,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:13,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:13,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:13,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:13,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:53:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:14,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:53:14,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:53:14,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:53:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49394617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:15,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:15,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-28 04:53:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720052524] [2024-11-28 04:53:15,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:15,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:53:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:15,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:53:15,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:53:15,950 INFO L87 Difference]: Start difference. First operand 66506 states and 72934 transitions. Second operand has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:30,079 INFO L93 Difference]: Finished difference Result 170088 states and 186264 transitions. [2024-11-28 04:53:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:53:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2024-11-28 04:53:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:30,173 INFO L225 Difference]: With dead ends: 170088 [2024-11-28 04:53:30,173 INFO L226 Difference]: Without dead ends: 102734 [2024-11-28 04:53:30,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:53:30,197 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 7737 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 8733 mSolverCounterSat, 1937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7737 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 10670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1937 IncrementalHoareTripleChecker+Valid, 8733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:30,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7737 Valid, 290 Invalid, 10670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1937 Valid, 8733 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-28 04:53:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102734 states. [2024-11-28 04:53:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102734 to 92441. [2024-11-28 04:53:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92441 states, 92440 states have (on average 1.0859692773691043) internal successors, (100387), 92440 states have internal predecessors, (100387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92441 states to 92441 states and 100387 transitions. [2024-11-28 04:53:31,611 INFO L78 Accepts]: Start accepts. Automaton has 92441 states and 100387 transitions. Word has length 438 [2024-11-28 04:53:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:31,612 INFO L471 AbstractCegarLoop]: Abstraction has 92441 states and 100387 transitions. [2024-11-28 04:53:31,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 92441 states and 100387 transitions. [2024-11-28 04:53:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-28 04:53:31,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:31,624 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:53:31,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:31,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:53:31,825 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:31,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -943768587, now seen corresponding path program 1 times [2024-11-28 04:53:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:31,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532351792] [2024-11-28 04:53:31,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 400 proven. 73 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-28 04:53:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532351792] [2024-11-28 04:53:33,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532351792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020676856] [2024-11-28 04:53:33,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:33,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:33,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:33,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:33,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:53:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:33,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:53:33,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 400 proven. 73 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-28 04:53:33,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-28 04:53:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020676856] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:34,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:53:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-28 04:53:34,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607341185] [2024-11-28 04:53:34,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:34,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:53:34,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:34,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:53:34,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:34,136 INFO L87 Difference]: Start difference. First operand 92441 states and 100387 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:38,375 INFO L93 Difference]: Finished difference Result 198931 states and 215930 transitions. [2024-11-28 04:53:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:53:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2024-11-28 04:53:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:38,475 INFO L225 Difference]: With dead ends: 198931 [2024-11-28 04:53:38,475 INFO L226 Difference]: Without dead ends: 106917 [2024-11-28 04:53:38,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:38,517 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 815 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:38,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 214 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 04:53:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106917 states. [2024-11-28 04:53:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106917 to 102666. [2024-11-28 04:53:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102666 states, 102665 states have (on average 1.084673452491112) internal successors, (111358), 102665 states have internal predecessors, (111358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102666 states to 102666 states and 111358 transitions. [2024-11-28 04:53:40,212 INFO L78 Accepts]: Start accepts. Automaton has 102666 states and 111358 transitions. Word has length 468 [2024-11-28 04:53:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:40,213 INFO L471 AbstractCegarLoop]: Abstraction has 102666 states and 111358 transitions. [2024-11-28 04:53:40,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 102666 states and 111358 transitions. [2024-11-28 04:53:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-28 04:53:40,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:40,225 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:40,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:53:40,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:53:40,426 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:40,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1062405964, now seen corresponding path program 1 times [2024-11-28 04:53:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:40,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707612914] [2024-11-28 04:53:40,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:40,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-28 04:53:41,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707612914] [2024-11-28 04:53:41,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707612914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:41,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238672610] [2024-11-28 04:53:41,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:41,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:41,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:41,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:41,217 INFO L87 Difference]: Start difference. First operand 102666 states and 111358 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:43,888 INFO L93 Difference]: Finished difference Result 204049 states and 221351 transitions. [2024-11-28 04:53:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:43,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2024-11-28 04:53:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:44,005 INFO L225 Difference]: With dead ends: 204049 [2024-11-28 04:53:44,005 INFO L226 Difference]: Without dead ends: 101809 [2024-11-28 04:53:44,047 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 04:53:44,048 INFO L435 NwaCegarLoop]: 639 mSDtfsCounter, 437 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:44,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 695 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:53:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101809 states. [2024-11-28 04:53:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101809 to 96705. [2024-11-28 04:53:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96705 states, 96704 states have (on average 1.0720239080079417) internal successors, (103669), 96704 states have internal predecessors, (103669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96705 states to 96705 states and 103669 transitions. [2024-11-28 04:53:45,518 INFO L78 Accepts]: Start accepts. Automaton has 96705 states and 103669 transitions. Word has length 501 [2024-11-28 04:53:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:45,519 INFO L471 AbstractCegarLoop]: Abstraction has 96705 states and 103669 transitions. [2024-11-28 04:53:45,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 96705 states and 103669 transitions. [2024-11-28 04:53:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-28 04:53:45,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:45,534 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:45,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:53:45,535 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:45,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 224079906, now seen corresponding path program 1 times [2024-11-28 04:53:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:45,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821974186] [2024-11-28 04:53:45,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-11-28 04:53:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821974186] [2024-11-28 04:53:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821974186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:46,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:53:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287336350] [2024-11-28 04:53:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:46,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:46,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:46,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:46,384 INFO L87 Difference]: Start difference. First operand 96705 states and 103669 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:47,946 INFO L93 Difference]: Finished difference Result 184460 states and 197698 transitions. [2024-11-28 04:53:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2024-11-28 04:53:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:48,030 INFO L225 Difference]: With dead ends: 184460 [2024-11-28 04:53:48,030 INFO L226 Difference]: Without dead ends: 88181 [2024-11-28 04:53:48,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:53:48,068 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 590 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:48,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 84 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:53:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88181 states. [2024-11-28 04:53:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88181 to 88169. [2024-11-28 04:53:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88169 states, 88168 states have (on average 1.0709441067053806) internal successors, (94423), 88168 states have internal predecessors, (94423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88169 states to 88169 states and 94423 transitions. [2024-11-28 04:53:49,417 INFO L78 Accepts]: Start accepts. Automaton has 88169 states and 94423 transitions. Word has length 526 [2024-11-28 04:53:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:49,418 INFO L471 AbstractCegarLoop]: Abstraction has 88169 states and 94423 transitions. [2024-11-28 04:53:49,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand 88169 states and 94423 transitions. [2024-11-28 04:53:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2024-11-28 04:53:49,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:49,433 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:49,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:53:49,433 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:49,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash 18735335, now seen corresponding path program 1 times [2024-11-28 04:53:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815266061] [2024-11-28 04:53:49,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 488 proven. 56 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:53:50,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815266061] [2024-11-28 04:53:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815266061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:50,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511420910] [2024-11-28 04:53:50,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:50,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:50,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:50,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:50,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:53:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:50,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:53:50,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2024-11-28 04:53:50,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511420910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:50,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-28 04:53:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410459524] [2024-11-28 04:53:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:50,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:50,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:50,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:50,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:50,992 INFO L87 Difference]: Start difference. First operand 88169 states and 94423 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:53,788 INFO L93 Difference]: Finished difference Result 88603 states and 94859 transitions. [2024-11-28 04:53:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 574 [2024-11-28 04:53:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:53,890 INFO L225 Difference]: With dead ends: 88603 [2024-11-28 04:53:53,890 INFO L226 Difference]: Without dead ends: 88176 [2024-11-28 04:53:53,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:53:53,902 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 417 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:53,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 280 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 04:53:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88176 states. [2024-11-28 04:53:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88176 to 88169. [2024-11-28 04:53:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88169 states, 88168 states have (on average 1.070365665547591) internal successors, (94372), 88168 states have internal predecessors, (94372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88169 states to 88169 states and 94372 transitions. [2024-11-28 04:53:54,993 INFO L78 Accepts]: Start accepts. Automaton has 88169 states and 94372 transitions. Word has length 574 [2024-11-28 04:53:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:54,994 INFO L471 AbstractCegarLoop]: Abstraction has 88169 states and 94372 transitions. [2024-11-28 04:53:54,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 88169 states and 94372 transitions. [2024-11-28 04:53:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-28 04:53:55,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:55,006 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:53:55,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:53:55,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:55,207 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:55,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash 240908181, now seen corresponding path program 1 times [2024-11-28 04:53:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916122573] [2024-11-28 04:53:55,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 760 proven. 67 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-28 04:53:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916122573] [2024-11-28 04:53:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916122573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229284085] [2024-11-28 04:53:56,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:56,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:56,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:56,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:56,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:53:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:56,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:53:56,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2024-11-28 04:53:58,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229284085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:53:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109088495] [2024-11-28 04:53:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:58,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:58,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:58,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:53:58,636 INFO L87 Difference]: Start difference. First operand 88169 states and 94372 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:01,291 INFO L93 Difference]: Finished difference Result 184867 states and 197741 transitions. [2024-11-28 04:54:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:54:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2024-11-28 04:54:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:01,397 INFO L225 Difference]: With dead ends: 184867 [2024-11-28 04:54:01,397 INFO L226 Difference]: Without dead ends: 96700 [2024-11-28 04:54:01,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:54:01,430 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 391 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:01,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 761 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:54:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96700 states. [2024-11-28 04:54:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96700 to 94975. [2024-11-28 04:54:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94975 states, 94974 states have (on average 1.0679554404363298) internal successors, (101428), 94974 states have internal predecessors, (101428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94975 states to 94975 states and 101428 transitions. [2024-11-28 04:54:02,947 INFO L78 Accepts]: Start accepts. Automaton has 94975 states and 101428 transitions. Word has length 593 [2024-11-28 04:54:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:02,948 INFO L471 AbstractCegarLoop]: Abstraction has 94975 states and 101428 transitions. [2024-11-28 04:54:02,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 94975 states and 101428 transitions. [2024-11-28 04:54:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 04:54:02,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:02,959 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:54:02,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:54:03,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:54:03,160 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:03,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1727057822, now seen corresponding path program 1 times [2024-11-28 04:54:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822598604] [2024-11-28 04:54:03,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-28 04:54:03,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:03,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822598604] [2024-11-28 04:54:03,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822598604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:54:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224273141] [2024-11-28 04:54:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:03,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:54:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:03,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:54:03,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:54:03,694 INFO L87 Difference]: Start difference. First operand 94975 states and 101428 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:08,067 INFO L93 Difference]: Finished difference Result 212082 states and 225944 transitions. [2024-11-28 04:54:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:54:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 598 [2024-11-28 04:54:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:08,178 INFO L225 Difference]: With dead ends: 212082 [2024-11-28 04:54:08,178 INFO L226 Difference]: Without dead ends: 117534 [2024-11-28 04:54:08,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:54:08,226 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 725 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:08,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 176 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 04:54:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117534 states. [2024-11-28 04:54:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117534 to 109024. [2024-11-28 04:54:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109024 states, 109023 states have (on average 1.0642158076736101) internal successors, (116024), 109023 states have internal predecessors, (116024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109024 states to 109024 states and 116024 transitions. [2024-11-28 04:54:09,996 INFO L78 Accepts]: Start accepts. Automaton has 109024 states and 116024 transitions. Word has length 598 [2024-11-28 04:54:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:09,996 INFO L471 AbstractCegarLoop]: Abstraction has 109024 states and 116024 transitions. [2024-11-28 04:54:09,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 109024 states and 116024 transitions. [2024-11-28 04:54:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-11-28 04:54:10,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:10,015 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:10,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:54:10,015 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:10,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1593823497, now seen corresponding path program 1 times [2024-11-28 04:54:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:10,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242269812] [2024-11-28 04:54:10,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 530 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:54:11,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:11,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242269812] [2024-11-28 04:54:11,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242269812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:11,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907881419] [2024-11-28 04:54:11,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:11,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:11,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:11,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:54:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:11,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:54:11,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:54:11,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:54:12,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907881419] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:12,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:54:12,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-28 04:54:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202487226] [2024-11-28 04:54:12,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:12,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:54:12,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:12,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:54:12,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:54:12,292 INFO L87 Difference]: Start difference. First operand 109024 states and 116024 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:17,102 INFO L93 Difference]: Finished difference Result 235928 states and 251484 transitions. [2024-11-28 04:54:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:54:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 625 [2024-11-28 04:54:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:17,216 INFO L225 Difference]: With dead ends: 235928 [2024-11-28 04:54:17,216 INFO L226 Difference]: Without dead ends: 126481 [2024-11-28 04:54:17,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1246 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:54:17,261 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 931 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:17,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 144 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:54:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126481 states. [2024-11-28 04:54:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126481 to 122209. [2024-11-28 04:54:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122209 states, 122208 states have (on average 1.0676224142445667) internal successors, (130472), 122208 states have internal predecessors, (130472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122209 states to 122209 states and 130472 transitions. [2024-11-28 04:54:19,208 INFO L78 Accepts]: Start accepts. Automaton has 122209 states and 130472 transitions. Word has length 625 [2024-11-28 04:54:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:19,209 INFO L471 AbstractCegarLoop]: Abstraction has 122209 states and 130472 transitions. [2024-11-28 04:54:19,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 122209 states and 130472 transitions. [2024-11-28 04:54:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-11-28 04:54:19,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:19,230 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:19,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:54:19,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54de6976-6194-4cdd-af65-48b8e175ca16/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:54:19,431 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:19,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -324384800, now seen corresponding path program 1 times [2024-11-28 04:54:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984448915] [2024-11-28 04:54:19,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:54:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 04:54:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984448915] [2024-11-28 04:54:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984448915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:54:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:54:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:54:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519760324] [2024-11-28 04:54:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:54:20,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:54:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:20,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:54:20,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:54:20,478 INFO L87 Difference]: Start difference. First operand 122209 states and 130472 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:23,028 INFO L93 Difference]: Finished difference Result 245292 states and 261867 transitions. [2024-11-28 04:54:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:54:23,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2024-11-28 04:54:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:23,145 INFO L225 Difference]: With dead ends: 245292 [2024-11-28 04:54:23,145 INFO L226 Difference]: Without dead ends: 123085 [2024-11-28 04:54:23,202 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 04:54:23,203 INFO L435 NwaCegarLoop]: 712 mSDtfsCounter, 390 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:23,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 757 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:54:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123085 states.