./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/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_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/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 64bit --witnessprinter.graph.data.programhash 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:09:38,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:09:39,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:09:39,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:09:39,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:09:39,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:09:39,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:09:39,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:09:39,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:09:39,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:09:39,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:09:39,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:09:39,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:09:39,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:09:39,160 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:09:39,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:09:39,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:09:39,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:09:39,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:09:39,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:09:39,161 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:39,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:09:39,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:09:39,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:39,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:09:39,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:09:39,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:09:39,166 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_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a [2024-11-28 04:09:39,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:09:39,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:09:39,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:09:39,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:09:39,581 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:09:39,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-11-28 04:09:42,768 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/data/32246fac0/100de7a8f0f64affa437d8a27946b51a/FLAG1ac009f9d [2024-11-28 04:09:43,151 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:09:43,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2024-11-28 04:09:43,168 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/data/32246fac0/100de7a8f0f64affa437d8a27946b51a/FLAG1ac009f9d [2024-11-28 04:09:43,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/data/32246fac0/100de7a8f0f64affa437d8a27946b51a [2024-11-28 04:09:43,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:09:43,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:09:43,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:09:43,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:09:43,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:09:43,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e89ee8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43, skipping insertion in model container [2024-11-28 04:09:43,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:09:43,496 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_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-11-28 04:09:43,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:09:43,654 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:09:43,667 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_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2024-11-28 04:09:43,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:09:43,757 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:09:43,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43 WrapperNode [2024-11-28 04:09:43,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:09:43,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:09:43,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:09:43,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:09:43,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,892 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 650 [2024-11-28 04:09:43,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:09:43,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:09:43,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:09:43,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:09:43,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,964 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 04:09:43,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:43,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,000 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:09:44,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:09:44,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:09:44,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:09:44,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (1/1) ... [2024-11-28 04:09:44,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:09:44,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:44,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:09:44,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:09:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:09:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:09:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:09:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:09:44,346 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:09:44,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:09:46,071 INFO L? ?]: Removed 394 outVars from TransFormulas that were not future-live. [2024-11-28 04:09:46,071 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:09:46,095 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:09:46,095 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:09:46,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:09:46 BoogieIcfgContainer [2024-11-28 04:09:46,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:09:46,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:09:46,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:09:46,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:09:46,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:09:43" (1/3) ... [2024-11-28 04:09:46,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258fa614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:09:46, skipping insertion in model container [2024-11-28 04:09:46,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:09:43" (2/3) ... [2024-11-28 04:09:46,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258fa614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:09:46, skipping insertion in model container [2024-11-28 04:09:46,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:09:46" (3/3) ... [2024-11-28 04:09:46,112 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2024-11-28 04:09:46,131 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:09:46,133 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.sw_ball2004_1.c that has 1 procedures, 194 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:09:46,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:09:46,227 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;@2a0aab96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:09:46,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:09:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 192 states have (on average 1.4947916666666667) internal successors, (287), 193 states have internal predecessors, (287), 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 04:09:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:09:46,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:46,246 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] [2024-11-28 04:09:46,246 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1579872556, now seen corresponding path program 1 times [2024-11-28 04:09:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568075415] [2024-11-28 04:09:46,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:47,002 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 04:09:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:47,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568075415] [2024-11-28 04:09:47,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568075415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:47,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:09:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981327533] [2024-11-28 04:09:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:47,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:47,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:47,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:47,043 INFO L87 Difference]: Start difference. First operand has 194 states, 192 states have (on average 1.4947916666666667) internal successors, (287), 193 states have internal predecessors, (287), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 04:09:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:47,167 INFO L93 Difference]: Finished difference Result 349 states and 519 transitions. [2024-11-28 04:09:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:09:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-28 04:09:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:47,184 INFO L225 Difference]: With dead ends: 349 [2024-11-28 04:09:47,184 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 04:09:47,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:47,194 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:47,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:09:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 04:09:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-28 04:09:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.484375) internal successors, (285), 192 states have internal predecessors, (285), 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 04:09:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 285 transitions. [2024-11-28 04:09:47,269 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 285 transitions. Word has length 27 [2024-11-28 04:09:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:47,269 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 285 transitions. [2024-11-28 04:09:47,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 04:09:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 285 transitions. [2024-11-28 04:09:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:09:47,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:47,271 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] [2024-11-28 04:09:47,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:09:47,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:47,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1729713684, now seen corresponding path program 1 times [2024-11-28 04:09:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:47,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855222042] [2024-11-28 04:09:47,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:47,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:47,691 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 04:09:47,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:47,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855222042] [2024-11-28 04:09:47,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855222042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:47,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:47,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:09:47,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701272417] [2024-11-28 04:09:47,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:47,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:09:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:47,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:09:47,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:47,695 INFO L87 Difference]: Start difference. First operand 193 states and 285 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 04:09:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:47,787 INFO L93 Difference]: Finished difference Result 350 states and 517 transitions. [2024-11-28 04:09:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:09:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-28 04:09:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:47,790 INFO L225 Difference]: With dead ends: 350 [2024-11-28 04:09:47,790 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 04:09:47,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:09:47,796 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:47,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:09:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 04:09:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-28 04:09:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4793814432989691) internal successors, (287), 194 states have internal predecessors, (287), 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 04:09:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 287 transitions. [2024-11-28 04:09:47,828 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 287 transitions. Word has length 28 [2024-11-28 04:09:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:47,832 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 287 transitions. [2024-11-28 04:09:47,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 04:09:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 287 transitions. [2024-11-28 04:09:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:09:47,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:47,834 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] [2024-11-28 04:09:47,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:09:47,834 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:47,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1115484845, now seen corresponding path program 1 times [2024-11-28 04:09:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153261017] [2024-11-28 04:09:47,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:48,304 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 04:09:48,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153261017] [2024-11-28 04:09:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153261017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:48,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:48,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255462872] [2024-11-28 04:09:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:48,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:48,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:48,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:48,307 INFO L87 Difference]: Start difference. First operand 195 states and 287 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 04:09:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:48,476 INFO L93 Difference]: Finished difference Result 483 states and 712 transitions. [2024-11-28 04:09:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:48,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-28 04:09:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:48,481 INFO L225 Difference]: With dead ends: 483 [2024-11-28 04:09:48,481 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 04:09:48,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:48,484 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 649 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:48,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 813 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 04:09:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 197. [2024-11-28 04:09:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 196 states have internal predecessors, (289), 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 04:09:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 289 transitions. [2024-11-28 04:09:48,502 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 289 transitions. Word has length 29 [2024-11-28 04:09:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:48,502 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 289 transitions. [2024-11-28 04:09:48,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 04:09:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 289 transitions. [2024-11-28 04:09:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:09:48,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:48,507 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:48,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:09:48,507 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:48,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1751736360, now seen corresponding path program 1 times [2024-11-28 04:09:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156318241] [2024-11-28 04:09:48,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156318241] [2024-11-28 04:09:50,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156318241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:50,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:50,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132286303] [2024-11-28 04:09:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:50,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:50,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:50,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:50,352 INFO L87 Difference]: Start difference. First operand 197 states and 289 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 04:09:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:50,554 INFO L93 Difference]: Finished difference Result 475 states and 699 transitions. [2024-11-28 04:09:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:50,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 106 [2024-11-28 04:09:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:50,558 INFO L225 Difference]: With dead ends: 475 [2024-11-28 04:09:50,558 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 04:09:50,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:50,561 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 597 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:50,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 805 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 04:09:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 244. [2024-11-28 04:09:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.4650205761316872) internal successors, (356), 243 states have internal predecessors, (356), 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 04:09:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 356 transitions. [2024-11-28 04:09:50,578 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 356 transitions. Word has length 106 [2024-11-28 04:09:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:50,579 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 356 transitions. [2024-11-28 04:09:50,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 04:09:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 356 transitions. [2024-11-28 04:09:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:09:50,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:50,583 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:50,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:09:50,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:50,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 481492987, now seen corresponding path program 1 times [2024-11-28 04:09:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:50,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496891432] [2024-11-28 04:09:50,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:50,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496891432] [2024-11-28 04:09:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496891432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145827749] [2024-11-28 04:09:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:52,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:52,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:52,061 INFO L87 Difference]: Start difference. First operand 244 states and 356 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 04:09:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:52,260 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2024-11-28 04:09:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 108 [2024-11-28 04:09:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:52,263 INFO L225 Difference]: With dead ends: 475 [2024-11-28 04:09:52,263 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 04:09:52,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:52,265 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 575 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:52,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 04:09:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 279. [2024-11-28 04:09:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.4640287769784173) internal successors, (407), 278 states have internal predecessors, (407), 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 04:09:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 407 transitions. [2024-11-28 04:09:52,294 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 407 transitions. Word has length 108 [2024-11-28 04:09:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:52,295 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 407 transitions. [2024-11-28 04:09:52,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 04:09:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 407 transitions. [2024-11-28 04:09:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:09:52,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:52,302 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:52,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:09:52,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:52,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash -338239037, now seen corresponding path program 1 times [2024-11-28 04:09:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033405543] [2024-11-28 04:09:52,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:53,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033405543] [2024-11-28 04:09:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033405543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:53,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:53,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854367172] [2024-11-28 04:09:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:53,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:53,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:53,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:53,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:53,522 INFO L87 Difference]: Start difference. First operand 279 states and 407 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 04:09:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:53,685 INFO L93 Difference]: Finished difference Result 533 states and 780 transitions. [2024-11-28 04:09:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 109 [2024-11-28 04:09:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:53,688 INFO L225 Difference]: With dead ends: 533 [2024-11-28 04:09:53,689 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 04:09:53,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:53,693 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 603 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:53,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 811 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 04:09:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 279. [2024-11-28 04:09:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.4568345323741008) internal successors, (405), 278 states have internal predecessors, (405), 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 04:09:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 405 transitions. [2024-11-28 04:09:53,720 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 405 transitions. Word has length 109 [2024-11-28 04:09:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:53,721 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 405 transitions. [2024-11-28 04:09:53,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 04:09:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 405 transitions. [2024-11-28 04:09:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:09:53,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:53,728 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:53,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:09:53,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:53,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash 736900224, now seen corresponding path program 1 times [2024-11-28 04:09:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:53,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853685510] [2024-11-28 04:09:53,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853685510] [2024-11-28 04:09:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853685510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903140400] [2024-11-28 04:09:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:54,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:54,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:54,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:54,928 INFO L87 Difference]: Start difference. First operand 279 states and 405 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 04:09:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:55,091 INFO L93 Difference]: Finished difference Result 475 states and 694 transitions. [2024-11-28 04:09:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:55,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 111 [2024-11-28 04:09:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:55,094 INFO L225 Difference]: With dead ends: 475 [2024-11-28 04:09:55,095 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 04:09:55,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:55,096 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 556 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:55,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 04:09:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 299. [2024-11-28 04:09:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4563758389261745) internal successors, (434), 298 states have internal predecessors, (434), 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 04:09:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 434 transitions. [2024-11-28 04:09:55,117 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 434 transitions. Word has length 111 [2024-11-28 04:09:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:55,118 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 434 transitions. [2024-11-28 04:09:55,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 04:09:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 434 transitions. [2024-11-28 04:09:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 04:09:55,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:55,120 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:55,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:09:55,120 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:55,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1350775393, now seen corresponding path program 1 times [2024-11-28 04:09:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:55,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484212632] [2024-11-28 04:09:55,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:55,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484212632] [2024-11-28 04:09:56,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484212632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:56,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:09:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817861979] [2024-11-28 04:09:56,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:56,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:09:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:56,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:09:56,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:09:56,177 INFO L87 Difference]: Start difference. First operand 299 states and 434 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 04:09:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:56,346 INFO L93 Difference]: Finished difference Result 478 states and 698 transitions. [2024-11-28 04:09:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:09:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 112 [2024-11-28 04:09:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:56,350 INFO L225 Difference]: With dead ends: 478 [2024-11-28 04:09:56,350 INFO L226 Difference]: Without dead ends: 321 [2024-11-28 04:09:56,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:56,352 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 549 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:56,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 800 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-28 04:09:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2024-11-28 04:09:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4559748427672956) internal successors, (463), 318 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 04:09:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 463 transitions. [2024-11-28 04:09:56,366 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 463 transitions. Word has length 112 [2024-11-28 04:09:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:56,367 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 463 transitions. [2024-11-28 04:09:56,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 04:09:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 463 transitions. [2024-11-28 04:09:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:09:56,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:56,369 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:56,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:09:56,370 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:56,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1363731229, now seen corresponding path program 1 times [2024-11-28 04:09:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989662173] [2024-11-28 04:09:56,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989662173] [2024-11-28 04:09:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989662173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:57,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:57,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:09:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820612105] [2024-11-28 04:09:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:57,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:09:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:57,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:09:57,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:57,395 INFO L87 Difference]: Start difference. First operand 319 states and 463 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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 04:09:57,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:57,612 INFO L93 Difference]: Finished difference Result 483 states and 704 transitions. [2024-11-28 04:09:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:09:57,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2024-11-28 04:09:57,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:57,615 INFO L225 Difference]: With dead ends: 483 [2024-11-28 04:09:57,615 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 04:09:57,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:09:57,617 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 558 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:57,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1226 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 04:09:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 322. [2024-11-28 04:09:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.4548286604361371) internal successors, (467), 321 states have internal predecessors, (467), 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 04:09:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 467 transitions. [2024-11-28 04:09:57,631 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 467 transitions. Word has length 113 [2024-11-28 04:09:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:57,631 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 467 transitions. [2024-11-28 04:09:57,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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 04:09:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 467 transitions. [2024-11-28 04:09:57,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:09:57,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:57,633 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:57,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:09:57,634 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:57,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -747703928, now seen corresponding path program 1 times [2024-11-28 04:09:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794245188] [2024-11-28 04:09:57,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:57,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:58,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:58,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794245188] [2024-11-28 04:09:58,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794245188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:58,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:58,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:09:58,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21974858] [2024-11-28 04:09:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:58,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:09:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:58,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:09:58,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:58,662 INFO L87 Difference]: Start difference. First operand 322 states and 467 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 04:09:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:58,905 INFO L93 Difference]: Finished difference Result 502 states and 730 transitions. [2024-11-28 04:09:58,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:09:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 114 [2024-11-28 04:09:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:58,909 INFO L225 Difference]: With dead ends: 502 [2024-11-28 04:09:58,909 INFO L226 Difference]: Without dead ends: 328 [2024-11-28 04:09:58,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:09:58,910 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 573 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:58,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1226 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:09:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-28 04:09:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2024-11-28 04:09:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.4520123839009287) internal successors, (469), 323 states have internal predecessors, (469), 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 04:09:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 469 transitions. [2024-11-28 04:09:58,924 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 469 transitions. Word has length 114 [2024-11-28 04:09:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:58,925 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 469 transitions. [2024-11-28 04:09:58,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 04:09:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 469 transitions. [2024-11-28 04:09:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:09:58,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:58,927 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:09:58,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:09:58,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:58,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1275613194, now seen corresponding path program 1 times [2024-11-28 04:09:58,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541868582] [2024-11-28 04:09:58,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541868582] [2024-11-28 04:09:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541868582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:59,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:09:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:09:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415481391] [2024-11-28 04:09:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:59,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:09:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:59,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:09:59,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:09:59,911 INFO L87 Difference]: Start difference. First operand 324 states and 469 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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 04:10:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:00,117 INFO L93 Difference]: Finished difference Result 491 states and 714 transitions. [2024-11-28 04:10:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:10:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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 115 [2024-11-28 04:10:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:00,120 INFO L225 Difference]: With dead ends: 491 [2024-11-28 04:10:00,120 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 04:10:00,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:10:00,121 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 566 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:00,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1146 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 04:10:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2024-11-28 04:10:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.4498480243161094) internal successors, (477), 329 states have internal predecessors, (477), 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 04:10:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 477 transitions. [2024-11-28 04:10:00,137 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 477 transitions. Word has length 115 [2024-11-28 04:10:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:00,138 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 477 transitions. [2024-11-28 04:10:00,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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 04:10:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 477 transitions. [2024-11-28 04:10:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:10:00,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:00,140 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:10:00,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:10:00,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:00,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1251688026, now seen corresponding path program 1 times [2024-11-28 04:10:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123122777] [2024-11-28 04:10:00,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:01,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123122777] [2024-11-28 04:10:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123122777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:01,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:01,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826126667] [2024-11-28 04:10:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:01,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:01,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:01,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:01,165 INFO L87 Difference]: Start difference. First operand 330 states and 477 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 04:10:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:01,354 INFO L93 Difference]: Finished difference Result 536 states and 777 transitions. [2024-11-28 04:10:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:10:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 115 [2024-11-28 04:10:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:01,357 INFO L225 Difference]: With dead ends: 536 [2024-11-28 04:10:01,357 INFO L226 Difference]: Without dead ends: 330 [2024-11-28 04:10:01,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:10:01,358 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 565 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:01,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1070 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-28 04:10:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2024-11-28 04:10:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.446808510638298) internal successors, (476), 329 states have internal predecessors, (476), 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 04:10:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 476 transitions. [2024-11-28 04:10:01,371 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 476 transitions. Word has length 115 [2024-11-28 04:10:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:01,372 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 476 transitions. [2024-11-28 04:10:01,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 04:10:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 476 transitions. [2024-11-28 04:10:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:10:01,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:01,374 INFO L218 NwaCegarLoop]: trace histogram [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 04:10:01,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:10:01,374 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:01,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash -182504569, now seen corresponding path program 1 times [2024-11-28 04:10:01,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:01,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592618884] [2024-11-28 04:10:01,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592618884] [2024-11-28 04:10:02,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592618884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993502075] [2024-11-28 04:10:02,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:02,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:02,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:02,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:02,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:10:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:03,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:10:03,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:05,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993502075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:07,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 32 [2024-11-28 04:10:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560955305] [2024-11-28 04:10:07,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:07,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:10:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:07,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:10:07,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:10:07,239 INFO L87 Difference]: Start difference. First operand 330 states and 476 transitions. Second operand has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 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 04:10:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:09,373 INFO L93 Difference]: Finished difference Result 880 states and 1272 transitions. [2024-11-28 04:10:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:10:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 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 116 [2024-11-28 04:10:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:09,377 INFO L225 Difference]: With dead ends: 880 [2024-11-28 04:10:09,378 INFO L226 Difference]: Without dead ends: 601 [2024-11-28 04:10:09,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:10:09,381 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 2288 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 4180 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:09,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 4180 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:10:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-28 04:10:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 472. [2024-11-28 04:10:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.4331210191082802) internal successors, (675), 471 states have internal predecessors, (675), 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 04:10:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 675 transitions. [2024-11-28 04:10:09,401 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 675 transitions. Word has length 116 [2024-11-28 04:10:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:09,403 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 675 transitions. [2024-11-28 04:10:09,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 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 04:10:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 675 transitions. [2024-11-28 04:10:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:10:09,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:09,407 INFO L218 NwaCegarLoop]: trace histogram [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 04:10:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:10:09,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:10:09,610 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:09,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:09,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1218739401, now seen corresponding path program 1 times [2024-11-28 04:10:09,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:09,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818844581] [2024-11-28 04:10:09,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:09,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818844581] [2024-11-28 04:10:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818844581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:10,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:10,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:10:10,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328495607] [2024-11-28 04:10:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:10,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:10:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:10,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:10:10,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:10:10,033 INFO L87 Difference]: Start difference. First operand 472 states and 675 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 04:10:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:10,120 INFO L93 Difference]: Finished difference Result 752 states and 1079 transitions. [2024-11-28 04:10:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:10:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 117 [2024-11-28 04:10:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:10,123 INFO L225 Difference]: With dead ends: 752 [2024-11-28 04:10:10,123 INFO L226 Difference]: Without dead ends: 471 [2024-11-28 04:10:10,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:10:10,125 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 617 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:10,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 814 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-28 04:10:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2024-11-28 04:10:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.4294871794871795) internal successors, (669), 468 states have internal predecessors, (669), 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 04:10:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 669 transitions. [2024-11-28 04:10:10,141 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 669 transitions. Word has length 117 [2024-11-28 04:10:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:10,141 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 669 transitions. [2024-11-28 04:10:10,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 04:10:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 669 transitions. [2024-11-28 04:10:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:10:10,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:10,143 INFO L218 NwaCegarLoop]: trace histogram [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 04:10:10,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:10:10,144 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:10,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2052352048, now seen corresponding path program 1 times [2024-11-28 04:10:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:10,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492667935] [2024-11-28 04:10:10,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:10,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492667935] [2024-11-28 04:10:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492667935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:10,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055265154] [2024-11-28 04:10:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:10,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:10,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:10,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:10,557 INFO L87 Difference]: Start difference. First operand 469 states and 669 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 04:10:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:10,677 INFO L93 Difference]: Finished difference Result 626 states and 900 transitions. [2024-11-28 04:10:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:10:10,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 117 [2024-11-28 04:10:10,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:10,680 INFO L225 Difference]: With dead ends: 626 [2024-11-28 04:10:10,680 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 04:10:10,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:10:10,682 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 591 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:10,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1076 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:10:10,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 04:10:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-28 04:10:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.434402332361516) internal successors, (492), 343 states have internal predecessors, (492), 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 04:10:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 492 transitions. [2024-11-28 04:10:10,693 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 492 transitions. Word has length 117 [2024-11-28 04:10:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:10,694 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 492 transitions. [2024-11-28 04:10:10,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 04:10:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 492 transitions. [2024-11-28 04:10:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-28 04:10:10,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:10,697 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-28 04:10:10,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:10:10,697 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:10,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1807475006, now seen corresponding path program 1 times [2024-11-28 04:10:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:10,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658845035] [2024-11-28 04:10:10,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 43 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:16,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:16,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658845035] [2024-11-28 04:10:16,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658845035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:16,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488407273] [2024-11-28 04:10:16,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:16,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:16,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:16,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:16,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:10:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:16,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:10:16,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:18,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 33 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488407273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:20,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:20,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 10] total 30 [2024-11-28 04:10:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436143758] [2024-11-28 04:10:20,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:20,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:10:20,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:20,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:10:20,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:10:20,940 INFO L87 Difference]: Start difference. First operand 344 states and 492 transitions. Second operand has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 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 04:10:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:25,478 INFO L93 Difference]: Finished difference Result 1962 states and 2823 transitions. [2024-11-28 04:10:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:10:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 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 193 [2024-11-28 04:10:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:25,486 INFO L225 Difference]: With dead ends: 1962 [2024-11-28 04:10:25,486 INFO L226 Difference]: Without dead ends: 1805 [2024-11-28 04:10:25,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=979, Invalid=6161, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 04:10:25,492 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 8211 mSDsluCounter, 6195 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:25,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8211 Valid, 6555 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:10:25,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2024-11-28 04:10:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1119. [2024-11-28 04:10:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.424865831842576) internal successors, (1593), 1118 states have internal predecessors, (1593), 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 04:10:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1593 transitions. [2024-11-28 04:10:25,542 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1593 transitions. Word has length 193 [2024-11-28 04:10:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:25,544 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1593 transitions. [2024-11-28 04:10:25,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 18.1) internal successors, (543), 30 states have internal predecessors, (543), 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 04:10:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1593 transitions. [2024-11-28 04:10:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 04:10:25,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:25,549 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-28 04:10:25,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:10:25,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:10:25,754 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:25,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1044630017, now seen corresponding path program 1 times [2024-11-28 04:10:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791656935] [2024-11-28 04:10:25,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:10:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:28,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791656935] [2024-11-28 04:10:28,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791656935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:28,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918824957] [2024-11-28 04:10:28,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:28,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:28,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:28,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:10:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:29,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 04:10:29,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:31,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918824957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:35,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 36 [2024-11-28 04:10:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443839822] [2024-11-28 04:10:35,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:35,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:10:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:35,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:10:35,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:10:35,458 INFO L87 Difference]: Start difference. First operand 1119 states and 1593 transitions. Second operand has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 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 04:10:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:44,152 INFO L93 Difference]: Finished difference Result 7305 states and 10494 transitions. [2024-11-28 04:10:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-28 04:10:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 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 195 [2024-11-28 04:10:44,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:44,179 INFO L225 Difference]: With dead ends: 7305 [2024-11-28 04:10:44,180 INFO L226 Difference]: Without dead ends: 6619 [2024-11-28 04:10:44,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9710 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3150, Invalid=24906, Unknown=0, NotChecked=0, Total=28056 [2024-11-28 04:10:44,191 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 7879 mSDsluCounter, 6983 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7879 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:44,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7879 Valid, 7332 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:10:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2024-11-28 04:10:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4763. [2024-11-28 04:10:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4762 states have (on average 1.4265014699706007) internal successors, (6793), 4762 states have internal predecessors, (6793), 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 04:10:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 6793 transitions. [2024-11-28 04:10:44,398 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 6793 transitions. Word has length 195 [2024-11-28 04:10:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:44,399 INFO L471 AbstractCegarLoop]: Abstraction has 4763 states and 6793 transitions. [2024-11-28 04:10:44,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 15.13888888888889) internal successors, (545), 36 states have internal predecessors, (545), 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 04:10:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 6793 transitions. [2024-11-28 04:10:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 04:10:44,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:44,413 INFO L218 NwaCegarLoop]: trace histogram [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, 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 04:10:44,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:10:44,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:10:44,618 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:44,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1288141017, now seen corresponding path program 1 times [2024-11-28 04:10:44,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:44,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481586894] [2024-11-28 04:10:44,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481586894] [2024-11-28 04:10:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481586894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112756762] [2024-11-28 04:10:49,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:49,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:49,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:10:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:49,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-28 04:10:49,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:52,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112756762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:55,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 22] total 54 [2024-11-28 04:10:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29335083] [2024-11-28 04:10:55,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:55,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 04:10:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:55,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 04:10:55,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=2427, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:10:55,492 INFO L87 Difference]: Start difference. First operand 4763 states and 6793 transitions. Second operand has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 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 04:11:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:28,798 INFO L93 Difference]: Finished difference Result 20225 states and 29447 transitions. [2024-11-28 04:11:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2024-11-28 04:11:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 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 196 [2024-11-28 04:11:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:28,833 INFO L225 Difference]: With dead ends: 20225 [2024-11-28 04:11:28,833 INFO L226 Difference]: Without dead ends: 17057 [2024-11-28 04:11:28,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55388 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=16253, Invalid=120277, Unknown=0, NotChecked=0, Total=136530 [2024-11-28 04:11:28,855 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 37835 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37835 SdHoareTripleChecker+Valid, 10331 SdHoareTripleChecker+Invalid, 4686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:28,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37835 Valid, 10331 Invalid, 4686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:11:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2024-11-28 04:11:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 10701. [2024-11-28 04:11:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10701 states, 10700 states have (on average 1.4457009345794392) internal successors, (15469), 10700 states have internal predecessors, (15469), 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 04:11:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10701 states to 10701 states and 15469 transitions. [2024-11-28 04:11:29,166 INFO L78 Accepts]: Start accepts. Automaton has 10701 states and 15469 transitions. Word has length 196 [2024-11-28 04:11:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:29,166 INFO L471 AbstractCegarLoop]: Abstraction has 10701 states and 15469 transitions. [2024-11-28 04:11:29,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 10.666666666666666) internal successors, (576), 54 states have internal predecessors, (576), 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 04:11:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10701 states and 15469 transitions. [2024-11-28 04:11:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:11:29,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:29,185 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:29,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:29,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:11:29,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 29764293, now seen corresponding path program 1 times [2024-11-28 04:11:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855167527] [2024-11-28 04:11:29,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:29,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:11:30,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:30,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855167527] [2024-11-28 04:11:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855167527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:30,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:30,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:11:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424510460] [2024-11-28 04:11:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:30,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:11:30,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:30,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:11:30,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:30,014 INFO L87 Difference]: Start difference. First operand 10701 states and 15469 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 04:11:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:30,132 INFO L93 Difference]: Finished difference Result 16452 states and 23920 transitions. [2024-11-28 04:11:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 198 [2024-11-28 04:11:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:30,169 INFO L225 Difference]: With dead ends: 16452 [2024-11-28 04:11:30,170 INFO L226 Difference]: Without dead ends: 10741 [2024-11-28 04:11:30,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:30,178 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 2 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:30,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1090 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2024-11-28 04:11:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 10725. [2024-11-28 04:11:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 1.445076464005968) internal successors, (15497), 10724 states have internal predecessors, (15497), 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 04:11:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 15497 transitions. [2024-11-28 04:11:30,368 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 15497 transitions. Word has length 198 [2024-11-28 04:11:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:30,368 INFO L471 AbstractCegarLoop]: Abstraction has 10725 states and 15497 transitions. [2024-11-28 04:11:30,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 04:11:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 15497 transitions. [2024-11-28 04:11:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:11:30,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:30,385 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:11:30,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:11:30,386 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:30,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash -330543717, now seen corresponding path program 1 times [2024-11-28 04:11:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:30,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674908891] [2024-11-28 04:11:30,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-28 04:11:31,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674908891] [2024-11-28 04:11:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674908891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:11:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491535966] [2024-11-28 04:11:31,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:31,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:11:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:31,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:11:31,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:31,682 INFO L87 Difference]: Start difference. First operand 10725 states and 15497 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 04:11:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:31,821 INFO L93 Difference]: Finished difference Result 18981 states and 27518 transitions. [2024-11-28 04:11:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:11:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 198 [2024-11-28 04:11:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:31,852 INFO L225 Difference]: With dead ends: 18981 [2024-11-28 04:11:31,852 INFO L226 Difference]: Without dead ends: 14753 [2024-11-28 04:11:31,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:11:31,860 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 453 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:31,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1646 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14753 states. [2024-11-28 04:11:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14753 to 12142. [2024-11-28 04:11:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 1.4456799275183263) internal successors, (17552), 12141 states have internal predecessors, (17552), 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 04:11:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 17552 transitions. [2024-11-28 04:11:32,056 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 17552 transitions. Word has length 198 [2024-11-28 04:11:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:32,056 INFO L471 AbstractCegarLoop]: Abstraction has 12142 states and 17552 transitions. [2024-11-28 04:11:32,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 04:11:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 17552 transitions. [2024-11-28 04:11:32,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:11:32,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:32,077 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:32,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:11:32,077 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:32,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1640455791, now seen corresponding path program 1 times [2024-11-28 04:11:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375597880] [2024-11-28 04:11:32,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 04:11:32,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:32,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375597880] [2024-11-28 04:11:32,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375597880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:32,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:32,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:11:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237042504] [2024-11-28 04:11:32,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:32,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:11:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:32,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:11:32,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:11:32,594 INFO L87 Difference]: Start difference. First operand 12142 states and 17552 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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 04:11:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:32,701 INFO L93 Difference]: Finished difference Result 17716 states and 25754 transitions. [2024-11-28 04:11:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:11:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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 198 [2024-11-28 04:11:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:32,724 INFO L225 Difference]: With dead ends: 17716 [2024-11-28 04:11:32,725 INFO L226 Difference]: Without dead ends: 9789 [2024-11-28 04:11:32,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:11:32,734 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 565 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:32,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 813 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2024-11-28 04:11:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 9789. [2024-11-28 04:11:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 1.4507560277891296) internal successors, (14200), 9788 states have internal predecessors, (14200), 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 04:11:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 14200 transitions. [2024-11-28 04:11:32,928 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 14200 transitions. Word has length 198 [2024-11-28 04:11:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:32,929 INFO L471 AbstractCegarLoop]: Abstraction has 9789 states and 14200 transitions. [2024-11-28 04:11:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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 04:11:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 14200 transitions. [2024-11-28 04:11:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:11:32,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:32,941 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:32,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:11:32,941 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:32,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1093581974, now seen corresponding path program 1 times [2024-11-28 04:11:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:32,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109848349] [2024-11-28 04:11:32,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:11:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109848349] [2024-11-28 04:11:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109848349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:35,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706705125] [2024-11-28 04:11:35,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:35,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:35,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:35,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:35,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:11:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:36,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 04:11:36,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:36,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:11:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706705125] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:37,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:11:37,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 13] total 26 [2024-11-28 04:11:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062621254] [2024-11-28 04:11:37,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:37,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:11:37,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:37,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:11:37,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:11:37,379 INFO L87 Difference]: Start difference. First operand 9789 states and 14200 transitions. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 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 04:11:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:37,847 INFO L93 Difference]: Finished difference Result 16995 states and 24772 transitions. [2024-11-28 04:11:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:11:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 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 199 [2024-11-28 04:11:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:37,866 INFO L225 Difference]: With dead ends: 16995 [2024-11-28 04:11:37,866 INFO L226 Difference]: Without dead ends: 10989 [2024-11-28 04:11:37,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:11:37,875 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 217 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:37,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2933 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:11:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10989 states. [2024-11-28 04:11:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10989 to 10461. [2024-11-28 04:11:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 1.445889101338432) internal successors, (15124), 10460 states have internal predecessors, (15124), 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 04:11:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 15124 transitions. [2024-11-28 04:11:38,033 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 15124 transitions. Word has length 199 [2024-11-28 04:11:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:38,034 INFO L471 AbstractCegarLoop]: Abstraction has 10461 states and 15124 transitions. [2024-11-28 04:11:38,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 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 04:11:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 15124 transitions. [2024-11-28 04:11:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:11:38,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:38,044 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-28 04:11:38,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:11:38,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:38,245 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:38,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1780675846, now seen corresponding path program 1 times [2024-11-28 04:11:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:38,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436558722] [2024-11-28 04:11:38,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:11:40,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:40,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436558722] [2024-11-28 04:11:40,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436558722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:40,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585353937] [2024-11-28 04:11:40,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:40,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:40,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:11:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:40,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-28 04:11:40,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:42,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:11:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585353937] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:43,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:11:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 17] total 27 [2024-11-28 04:11:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269479612] [2024-11-28 04:11:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:43,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:11:43,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:43,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:11:43,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:11:43,435 INFO L87 Difference]: Start difference. First operand 10461 states and 15124 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 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 04:11:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:43,714 INFO L93 Difference]: Finished difference Result 33107 states and 48043 transitions. [2024-11-28 04:11:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:11:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 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 199 [2024-11-28 04:11:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:43,740 INFO L225 Difference]: With dead ends: 33107 [2024-11-28 04:11:43,740 INFO L226 Difference]: Without dead ends: 13877 [2024-11-28 04:11:43,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:11:43,755 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 703 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:43,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1151 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:11:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13877 states. [2024-11-28 04:11:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13877 to 11579. [2024-11-28 04:11:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11579 states, 11578 states have (on average 1.4448954914493004) internal successors, (16729), 11578 states have internal predecessors, (16729), 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 04:11:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11579 states to 11579 states and 16729 transitions. [2024-11-28 04:11:43,917 INFO L78 Accepts]: Start accepts. Automaton has 11579 states and 16729 transitions. Word has length 199 [2024-11-28 04:11:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:43,917 INFO L471 AbstractCegarLoop]: Abstraction has 11579 states and 16729 transitions. [2024-11-28 04:11:43,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 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 04:11:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11579 states and 16729 transitions. [2024-11-28 04:11:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:11:43,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:43,926 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:11:43,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:44,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:44,127 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:44,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1449563644, now seen corresponding path program 1 times [2024-11-28 04:11:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:44,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35861266] [2024-11-28 04:11:44,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:44,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:11:45,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35861266] [2024-11-28 04:11:45,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35861266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:45,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274982781] [2024-11-28 04:11:45,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:45,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:45,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:11:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:46,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 284 conjuncts are in the unsatisfiable core [2024-11-28 04:11:46,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:51,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:11:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:11:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274982781] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:54,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:11:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [8, 32] total 57 [2024-11-28 04:11:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407909467] [2024-11-28 04:11:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:54,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:11:54,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:54,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:11:54,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2861, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:11:54,044 INFO L87 Difference]: Start difference. First operand 11579 states and 16729 transitions. Second operand has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 states have internal predecessors, (184), 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 04:12:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:00,169 INFO L93 Difference]: Finished difference Result 66042 states and 96176 transitions. [2024-11-28 04:12:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:12:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 states have internal predecessors, (184), 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 199 [2024-11-28 04:12:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:00,232 INFO L225 Difference]: With dead ends: 66042 [2024-11-28 04:12:00,232 INFO L226 Difference]: Without dead ends: 52425 [2024-11-28 04:12:00,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=848, Invalid=6808, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 04:12:00,254 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 1513 mSDsluCounter, 7206 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 8294 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:00,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 8294 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:12:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52425 states. [2024-11-28 04:12:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52425 to 14826. [2024-11-28 04:12:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14826 states, 14825 states have (on average 1.4522765598650929) internal successors, (21530), 14825 states have internal predecessors, (21530), 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 04:12:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14826 states to 14826 states and 21530 transitions. [2024-11-28 04:12:00,624 INFO L78 Accepts]: Start accepts. Automaton has 14826 states and 21530 transitions. Word has length 199 [2024-11-28 04:12:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:00,625 INFO L471 AbstractCegarLoop]: Abstraction has 14826 states and 21530 transitions. [2024-11-28 04:12:00,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.761904761904763) internal successors, (184), 21 states have internal predecessors, (184), 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 04:12:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 14826 states and 21530 transitions. [2024-11-28 04:12:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:12:00,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:00,634 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:12:00,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:12:00,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:12:00,835 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:00,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:00,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2108153004, now seen corresponding path program 1 times [2024-11-28 04:12:00,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:00,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101679596] [2024-11-28 04:12:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:02,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:02,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101679596] [2024-11-28 04:12:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101679596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351522312] [2024-11-28 04:12:02,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:02,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:02,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:02,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:02,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:12:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:03,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 04:12:03,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:04,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351522312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:07,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 19] total 37 [2024-11-28 04:12:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581195352] [2024-11-28 04:12:07,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:07,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 04:12:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:07,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 04:12:07,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:12:07,514 INFO L87 Difference]: Start difference. First operand 14826 states and 21530 transitions. Second operand has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 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 04:12:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:12,010 INFO L93 Difference]: Finished difference Result 27795 states and 40464 transitions. [2024-11-28 04:12:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:12:12,011 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 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 199 [2024-11-28 04:12:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:12,021 INFO L225 Difference]: With dead ends: 27795 [2024-11-28 04:12:12,021 INFO L226 Difference]: Without dead ends: 15322 [2024-11-28 04:12:12,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=873, Invalid=5447, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 04:12:12,029 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 2520 mSDsluCounter, 9997 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 10497 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:12,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 10497 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:12:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2024-11-28 04:12:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 13994. [2024-11-28 04:12:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 13993 states have (on average 1.448009719145287) internal successors, (20262), 13993 states have internal predecessors, (20262), 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 04:12:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 20262 transitions. [2024-11-28 04:12:12,199 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 20262 transitions. Word has length 199 [2024-11-28 04:12:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:12,199 INFO L471 AbstractCegarLoop]: Abstraction has 13994 states and 20262 transitions. [2024-11-28 04:12:12,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 14.18918918918919) internal successors, (525), 37 states have internal predecessors, (525), 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 04:12:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 20262 transitions. [2024-11-28 04:12:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-28 04:12:12,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:12,211 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:12,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:12:12,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:12:12,411 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:12,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 800174890, now seen corresponding path program 1 times [2024-11-28 04:12:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594057963] [2024-11-28 04:12:12,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 170 proven. 11 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-28 04:12:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594057963] [2024-11-28 04:12:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594057963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996174235] [2024-11-28 04:12:16,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:16,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:16,930 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:16,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:12:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:17,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-28 04:12:18,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 119 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:19,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-28 04:12:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996174235] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:20,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 20] total 38 [2024-11-28 04:12:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083119191] [2024-11-28 04:12:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:20,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:12:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:20,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:12:20,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:12:20,463 INFO L87 Difference]: Start difference. First operand 13994 states and 20262 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 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 04:12:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:20,915 INFO L93 Difference]: Finished difference Result 45235 states and 66098 transitions. [2024-11-28 04:12:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:12:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 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 277 [2024-11-28 04:12:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:20,935 INFO L225 Difference]: With dead ends: 45235 [2024-11-28 04:12:20,935 INFO L226 Difference]: Without dead ends: 25646 [2024-11-28 04:12:20,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:12:20,946 INFO L435 NwaCegarLoop]: 650 mSDtfsCounter, 819 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:20,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1807 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:12:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25646 states. [2024-11-28 04:12:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25646 to 16611. [2024-11-28 04:12:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16611 states, 16610 states have (on average 1.4507525586995786) internal successors, (24097), 16610 states have internal predecessors, (24097), 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 04:12:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16611 states to 16611 states and 24097 transitions. [2024-11-28 04:12:21,145 INFO L78 Accepts]: Start accepts. Automaton has 16611 states and 24097 transitions. Word has length 277 [2024-11-28 04:12:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:21,146 INFO L471 AbstractCegarLoop]: Abstraction has 16611 states and 24097 transitions. [2024-11-28 04:12:21,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 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 04:12:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 16611 states and 24097 transitions. [2024-11-28 04:12:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-28 04:12:21,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:21,154 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:21,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:12:21,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:12:21,355 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:21,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1262011759, now seen corresponding path program 1 times [2024-11-28 04:12:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:21,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165817368] [2024-11-28 04:12:21,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:21,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:12:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165817368] [2024-11-28 04:12:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165817368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:24,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:12:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:12:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804194511] [2024-11-28 04:12:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:24,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:12:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:24,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:12:24,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:12:24,118 INFO L87 Difference]: Start difference. First operand 16611 states and 24097 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 04:12:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:24,281 INFO L93 Difference]: Finished difference Result 28943 states and 42194 transitions. [2024-11-28 04:12:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:12:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 277 [2024-11-28 04:12:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:24,295 INFO L225 Difference]: With dead ends: 28943 [2024-11-28 04:12:24,295 INFO L226 Difference]: Without dead ends: 17298 [2024-11-28 04:12:24,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:12:24,304 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 116 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:24,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1485 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:12:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2024-11-28 04:12:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 17186. [2024-11-28 04:12:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17186 states, 17185 states have (on average 1.4502182135583357) internal successors, (24922), 17185 states have internal predecessors, (24922), 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 04:12:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17186 states to 17186 states and 24922 transitions. [2024-11-28 04:12:24,484 INFO L78 Accepts]: Start accepts. Automaton has 17186 states and 24922 transitions. Word has length 277 [2024-11-28 04:12:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:24,484 INFO L471 AbstractCegarLoop]: Abstraction has 17186 states and 24922 transitions. [2024-11-28 04:12:24,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 04:12:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 17186 states and 24922 transitions. [2024-11-28 04:12:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-28 04:12:24,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:24,497 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:24,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:12:24,498 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:24,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1167232792, now seen corresponding path program 1 times [2024-11-28 04:12:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452906353] [2024-11-28 04:12:24,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 17 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:12:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452906353] [2024-11-28 04:12:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452906353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571061516] [2024-11-28 04:12:27,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:27,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:27,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:27,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:27,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:12:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:29,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:12:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 04:12:30,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 04:12:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571061516] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 14] total 28 [2024-11-28 04:12:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797038890] [2024-11-28 04:12:30,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:30,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:12:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:30,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:12:30,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:12:30,992 INFO L87 Difference]: Start difference. First operand 17186 states and 24922 transitions. Second operand has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 04:12:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:31,551 INFO L93 Difference]: Finished difference Result 54108 states and 78903 transitions. [2024-11-28 04:12:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:12:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 277 [2024-11-28 04:12:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:31,569 INFO L225 Difference]: With dead ends: 54108 [2024-11-28 04:12:31,569 INFO L226 Difference]: Without dead ends: 28989 [2024-11-28 04:12:31,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:12:31,579 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 494 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:31,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2308 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:12:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2024-11-28 04:12:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 20922. [2024-11-28 04:12:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20922 states, 20921 states have (on average 1.4524640313560537) internal successors, (30387), 20921 states have internal predecessors, (30387), 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 04:12:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20922 states to 20922 states and 30387 transitions. [2024-11-28 04:12:31,794 INFO L78 Accepts]: Start accepts. Automaton has 20922 states and 30387 transitions. Word has length 277 [2024-11-28 04:12:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:31,795 INFO L471 AbstractCegarLoop]: Abstraction has 20922 states and 30387 transitions. [2024-11-28 04:12:31,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 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 04:12:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 20922 states and 30387 transitions. [2024-11-28 04:12:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:12:31,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:31,809 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:31,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:32,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:12:32,010 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:32,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:32,010 INFO L85 PathProgramCache]: Analyzing trace with hash -649162282, now seen corresponding path program 1 times [2024-11-28 04:12:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:32,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109891159] [2024-11-28 04:12:32,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 205 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109891159] [2024-11-28 04:12:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109891159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676028077] [2024-11-28 04:12:36,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:36,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:36,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:36,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:36,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:12:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:37,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 04:12:37,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 182 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:40,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:12:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676028077] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:41,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:41,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12, 21] total 44 [2024-11-28 04:12:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592265363] [2024-11-28 04:12:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:41,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:12:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:41,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:12:41,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1713, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:12:41,647 INFO L87 Difference]: Start difference. First operand 20922 states and 30387 transitions. Second operand has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 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 04:12:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:43,060 INFO L93 Difference]: Finished difference Result 85548 states and 125024 transitions. [2024-11-28 04:12:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:12:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 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 04:12:43,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:43,108 INFO L225 Difference]: With dead ends: 85548 [2024-11-28 04:12:43,108 INFO L226 Difference]: Without dead ends: 54204 [2024-11-28 04:12:43,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=244, Invalid=2408, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:12:43,130 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 1168 mSDsluCounter, 4194 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:43,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 4899 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:12:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54204 states. [2024-11-28 04:12:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54204 to 40897. [2024-11-28 04:12:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40897 states, 40896 states have (on average 1.4609741784037558) internal successors, (59748), 40896 states have internal predecessors, (59748), 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 04:12:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40897 states to 40897 states and 59748 transitions. [2024-11-28 04:12:43,572 INFO L78 Accepts]: Start accepts. Automaton has 40897 states and 59748 transitions. Word has length 278 [2024-11-28 04:12:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:43,572 INFO L471 AbstractCegarLoop]: Abstraction has 40897 states and 59748 transitions. [2024-11-28 04:12:43,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 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 04:12:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 40897 states and 59748 transitions. [2024-11-28 04:12:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:12:43,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:43,595 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:43,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:12:43,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:12:43,796 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:43,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 851578919, now seen corresponding path program 1 times [2024-11-28 04:12:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917291379] [2024-11-28 04:12:43,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:43,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 170 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 04:12:46,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917291379] [2024-11-28 04:12:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917291379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140331177] [2024-11-28 04:12:46,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:46,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:46,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:46,250 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:46,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:12:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:47,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:12:47,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 166 proven. 62 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:12:48,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 04:12:49,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140331177] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:49,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:12:49,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 13] total 27 [2024-11-28 04:12:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485132657] [2024-11-28 04:12:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:49,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:12:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:49,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:12:49,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:12:49,643 INFO L87 Difference]: Start difference. First operand 40897 states and 59748 transitions. Second operand has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 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 04:12:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:50,466 INFO L93 Difference]: Finished difference Result 123038 states and 180221 transitions. [2024-11-28 04:12:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:12:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 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 04:12:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:50,515 INFO L225 Difference]: With dead ends: 123038 [2024-11-28 04:12:50,515 INFO L226 Difference]: Without dead ends: 55560 [2024-11-28 04:12:50,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 539 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:12:50,549 INFO L435 NwaCegarLoop]: 553 mSDtfsCounter, 648 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:50,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2126 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:12:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55560 states. [2024-11-28 04:12:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55560 to 42239. [2024-11-28 04:12:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42239 states, 42238 states have (on average 1.4615985605379043) internal successors, (61735), 42238 states have internal predecessors, (61735), 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 04:12:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42239 states to 42239 states and 61735 transitions. [2024-11-28 04:12:51,170 INFO L78 Accepts]: Start accepts. Automaton has 42239 states and 61735 transitions. Word has length 278 [2024-11-28 04:12:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:51,171 INFO L471 AbstractCegarLoop]: Abstraction has 42239 states and 61735 transitions. [2024-11-28 04:12:51,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 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 04:12:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 42239 states and 61735 transitions. [2024-11-28 04:12:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 04:12:51,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:51,192 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:51,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:12:51,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:51,393 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:51,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1188704407, now seen corresponding path program 1 times [2024-11-28 04:12:51,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:51,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272865969] [2024-11-28 04:12:51,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:51,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 167 proven. 17 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:12:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:54,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272865969] [2024-11-28 04:12:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272865969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:54,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428011184] [2024-11-28 04:12:54,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:54,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:54,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:54,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:54,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:12:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:55,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:12:55,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 67 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:12:56,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 168 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:12:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428011184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:58,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 26 [2024-11-28 04:12:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567093884] [2024-11-28 04:12:58,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:58,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:12:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:58,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:12:58,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:12:58,816 INFO L87 Difference]: Start difference. First operand 42239 states and 61735 transitions. Second operand has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 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 04:13:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:01,168 INFO L93 Difference]: Finished difference Result 94091 states and 137747 transitions. [2024-11-28 04:13:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:13:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 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 04:13:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:01,215 INFO L225 Difference]: With dead ends: 94091 [2024-11-28 04:13:01,215 INFO L226 Difference]: Without dead ends: 59232 [2024-11-28 04:13:01,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 04:13:01,239 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 3277 mSDsluCounter, 5709 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:01,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 6160 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:13:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59232 states. [2024-11-28 04:13:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59232 to 50131. [2024-11-28 04:13:01,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50131 states, 50130 states have (on average 1.4623179732694993) internal successors, (73306), 50130 states have internal predecessors, (73306), 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 04:13:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50131 states to 50131 states and 73306 transitions. [2024-11-28 04:13:01,830 INFO L78 Accepts]: Start accepts. Automaton has 50131 states and 73306 transitions. Word has length 278 [2024-11-28 04:13:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:01,830 INFO L471 AbstractCegarLoop]: Abstraction has 50131 states and 73306 transitions. [2024-11-28 04:13:01,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 25.26923076923077) internal successors, (657), 26 states have internal predecessors, (657), 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 04:13:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 50131 states and 73306 transitions. [2024-11-28 04:13:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-28 04:13:01,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:01,846 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:01,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:02,047 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:02,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1429032304, now seen corresponding path program 1 times [2024-11-28 04:13:02,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233299653] [2024-11-28 04:13:02,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:02,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 04:13:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233299653] [2024-11-28 04:13:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233299653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:04,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:13:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494878597] [2024-11-28 04:13:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:04,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:13:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:04,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:13:04,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:13:04,963 INFO L87 Difference]: Start difference. First operand 50131 states and 73306 transitions. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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 04:13:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:05,336 INFO L93 Difference]: Finished difference Result 108730 states and 159504 transitions. [2024-11-28 04:13:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:13:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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 279 [2024-11-28 04:13:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:05,389 INFO L225 Difference]: With dead ends: 108730 [2024-11-28 04:13:05,389 INFO L226 Difference]: Without dead ends: 66271 [2024-11-28 04:13:05,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:13:05,415 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 150 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:05,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1912 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:05,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66271 states. [2024-11-28 04:13:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66271 to 50947. [2024-11-28 04:13:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50947 states, 50946 states have (on average 1.4609194048600478) internal successors, (74428), 50946 states have internal predecessors, (74428), 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 04:13:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50947 states to 50947 states and 74428 transitions. [2024-11-28 04:13:05,943 INFO L78 Accepts]: Start accepts. Automaton has 50947 states and 74428 transitions. Word has length 279 [2024-11-28 04:13:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:05,943 INFO L471 AbstractCegarLoop]: Abstraction has 50947 states and 74428 transitions. [2024-11-28 04:13:05,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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 04:13:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 50947 states and 74428 transitions. [2024-11-28 04:13:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 04:13:05,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:05,959 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:05,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 04:13:05,959 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:05,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 682043033, now seen corresponding path program 1 times [2024-11-28 04:13:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:05,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434391412] [2024-11-28 04:13:05,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:13:08,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:08,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434391412] [2024-11-28 04:13:08,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434391412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:08,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318734742] [2024-11-28 04:13:08,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:08,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:08,291 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:08,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:13:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:09,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:13:09,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:13:09,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:09,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318734742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:09,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:09,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 04:13:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851082547] [2024-11-28 04:13:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:09,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:13:09,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:09,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:13:09,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:13:09,645 INFO L87 Difference]: Start difference. First operand 50947 states and 74428 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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 04:13:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:10,054 INFO L93 Difference]: Finished difference Result 104946 states and 153594 transitions. [2024-11-28 04:13:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:13:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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 280 [2024-11-28 04:13:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:10,106 INFO L225 Difference]: With dead ends: 104946 [2024-11-28 04:13:10,106 INFO L226 Difference]: Without dead ends: 60079 [2024-11-28 04:13:10,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:13:10,134 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 246 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:10,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2380 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60079 states. [2024-11-28 04:13:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60079 to 50466. [2024-11-28 04:13:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50466 states, 50465 states have (on average 1.4619637372436343) internal successors, (73778), 50465 states have internal predecessors, (73778), 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 04:13:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50466 states to 50466 states and 73778 transitions. [2024-11-28 04:13:10,950 INFO L78 Accepts]: Start accepts. Automaton has 50466 states and 73778 transitions. Word has length 280 [2024-11-28 04:13:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:10,950 INFO L471 AbstractCegarLoop]: Abstraction has 50466 states and 73778 transitions. [2024-11-28 04:13:10,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 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 04:13:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 50466 states and 73778 transitions. [2024-11-28 04:13:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 04:13:10,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:10,976 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:10,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:13:11,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:11,177 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:11,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1760789467, now seen corresponding path program 1 times [2024-11-28 04:13:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:11,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790376845] [2024-11-28 04:13:11,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:11,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 167 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:13:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790376845] [2024-11-28 04:13:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790376845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356467481] [2024-11-28 04:13:13,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:13,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:13,842 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:13,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:13:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:15,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 04:13:15,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 166 proven. 67 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:13:16,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:13:16,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356467481] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:16,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:13:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 11] total 22 [2024-11-28 04:13:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458567511] [2024-11-28 04:13:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:16,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:13:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:16,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:13:16,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:13:16,658 INFO L87 Difference]: Start difference. First operand 50466 states and 73778 transitions. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 04:13:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:17,226 INFO L93 Difference]: Finished difference Result 162220 states and 237636 transitions. [2024-11-28 04:13:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:13:17,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 280 [2024-11-28 04:13:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:17,289 INFO L225 Difference]: With dead ends: 162220 [2024-11-28 04:13:17,289 INFO L226 Difference]: Without dead ends: 64980 [2024-11-28 04:13:17,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:13:17,336 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 321 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:17,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1323 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:13:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64980 states. [2024-11-28 04:13:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64980 to 63840. [2024-11-28 04:13:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63840 states, 63839 states have (on average 1.4636037531916226) internal successors, (93435), 63839 states have internal predecessors, (93435), 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 04:13:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63840 states to 63840 states and 93435 transitions. [2024-11-28 04:13:18,231 INFO L78 Accepts]: Start accepts. Automaton has 63840 states and 93435 transitions. Word has length 280 [2024-11-28 04:13:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:18,231 INFO L471 AbstractCegarLoop]: Abstraction has 63840 states and 93435 transitions. [2024-11-28 04:13:18,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 04:13:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 63840 states and 93435 transitions. [2024-11-28 04:13:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 04:13:18,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:18,264 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:18,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:18,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 04:13:18,464 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:18,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1517944585, now seen corresponding path program 1 times [2024-11-28 04:13:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250511099] [2024-11-28 04:13:18,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:13:21,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:21,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250511099] [2024-11-28 04:13:21,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250511099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:21,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088733707] [2024-11-28 04:13:21,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:21,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:21,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:21,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:21,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:13:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:22,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-28 04:13:22,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 180 proven. 24 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 04:13:23,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-28 04:13:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088733707] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:23,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:13:23,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 14] total 27 [2024-11-28 04:13:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344335928] [2024-11-28 04:13:23,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:23,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:13:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:23,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:13:23,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:13:23,904 INFO L87 Difference]: Start difference. First operand 63840 states and 93435 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 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 04:13:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:24,633 INFO L93 Difference]: Finished difference Result 166137 states and 243633 transitions. [2024-11-28 04:13:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:13:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 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 280 [2024-11-28 04:13:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:24,719 INFO L225 Difference]: With dead ends: 166137 [2024-11-28 04:13:24,719 INFO L226 Difference]: Without dead ends: 97496 [2024-11-28 04:13:24,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:13:24,760 INFO L435 NwaCegarLoop]: 603 mSDtfsCounter, 806 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:24,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1880 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:13:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97496 states. [2024-11-28 04:13:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97496 to 67813. [2024-11-28 04:13:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67813 states, 67812 states have (on average 1.462307556184746) internal successors, (99162), 67812 states have internal predecessors, (99162), 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 04:13:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67813 states to 67813 states and 99162 transitions. [2024-11-28 04:13:25,496 INFO L78 Accepts]: Start accepts. Automaton has 67813 states and 99162 transitions. Word has length 280 [2024-11-28 04:13:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:25,497 INFO L471 AbstractCegarLoop]: Abstraction has 67813 states and 99162 transitions. [2024-11-28 04:13:25,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 8 states have internal predecessors, (196), 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 04:13:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 67813 states and 99162 transitions. [2024-11-28 04:13:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 04:13:25,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:25,519 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:25,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:13:25,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:13:25,720 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:25,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -633843279, now seen corresponding path program 1 times [2024-11-28 04:13:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:25,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154266976] [2024-11-28 04:13:25,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:13:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154266976] [2024-11-28 04:13:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154266976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239784169] [2024-11-28 04:13:28,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:28,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:28,426 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:28,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:13:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:30,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:13:30,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-28 04:13:30,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239784169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 04:13:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742103285] [2024-11-28 04:13:30,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:30,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:13:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:30,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:13:30,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:13:30,400 INFO L87 Difference]: Start difference. First operand 67813 states and 99162 transitions. Second operand has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 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 04:13:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:30,858 INFO L93 Difference]: Finished difference Result 139146 states and 203789 transitions. [2024-11-28 04:13:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:13:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 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 281 [2024-11-28 04:13:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:30,920 INFO L225 Difference]: With dead ends: 139146 [2024-11-28 04:13:30,920 INFO L226 Difference]: Without dead ends: 74913 [2024-11-28 04:13:30,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:13:30,955 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 140 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:30,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1816 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74913 states. [2024-11-28 04:13:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74913 to 66761. [2024-11-28 04:13:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66761 states, 66760 states have (on average 1.4607100059916118) internal successors, (97517), 66760 states have internal predecessors, (97517), 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 04:13:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66761 states to 66761 states and 97517 transitions. [2024-11-28 04:13:31,765 INFO L78 Accepts]: Start accepts. Automaton has 66761 states and 97517 transitions. Word has length 281 [2024-11-28 04:13:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:31,765 INFO L471 AbstractCegarLoop]: Abstraction has 66761 states and 97517 transitions. [2024-11-28 04:13:31,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 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 04:13:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 66761 states and 97517 transitions. [2024-11-28 04:13:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 04:13:31,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:31,798 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:31,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:31,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:13:31,999 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:31,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash 483188634, now seen corresponding path program 1 times [2024-11-28 04:13:31,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130296339] [2024-11-28 04:13:31,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 169 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 04:13:35,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130296339] [2024-11-28 04:13:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130296339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814165008] [2024-11-28 04:13:35,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:35,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:35,261 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:35,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:13:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:36,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:13:36,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 130 proven. 95 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:13:37,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-28 04:13:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814165008] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:37,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:13:37,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 12] total 25 [2024-11-28 04:13:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51118371] [2024-11-28 04:13:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:37,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:13:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:37,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:13:37,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:13:37,966 INFO L87 Difference]: Start difference. First operand 66761 states and 97517 transitions. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 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 04:13:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:39,037 INFO L93 Difference]: Finished difference Result 217356 states and 318104 transitions. [2024-11-28 04:13:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:13:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 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 281 [2024-11-28 04:13:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:39,122 INFO L225 Difference]: With dead ends: 217356 [2024-11-28 04:13:39,122 INFO L226 Difference]: Without dead ends: 96945 [2024-11-28 04:13:39,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:13:39,159 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 883 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:39,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1383 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:13:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96945 states. [2024-11-28 04:13:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96945 to 65921. [2024-11-28 04:13:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65921 states, 65920 states have (on average 1.4596935679611651) internal successors, (96223), 65920 states have internal predecessors, (96223), 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 04:13:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65921 states to 65921 states and 96223 transitions. [2024-11-28 04:13:40,133 INFO L78 Accepts]: Start accepts. Automaton has 65921 states and 96223 transitions. Word has length 281 [2024-11-28 04:13:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:40,133 INFO L471 AbstractCegarLoop]: Abstraction has 65921 states and 96223 transitions. [2024-11-28 04:13:40,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 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 04:13:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 65921 states and 96223 transitions. [2024-11-28 04:13:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-28 04:13:40,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:40,167 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:40,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:13:40,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a0d99-8e33-4f45-b53a-ca7f5a654260/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:13:40,367 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:40,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1228433115, now seen corresponding path program 1 times [2024-11-28 04:13:40,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:40,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478315595] [2024-11-28 04:13:40,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat