./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/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_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:51,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:51,661 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:22:51,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:51,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:51,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:51,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:51,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:51,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:51,704 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:51,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:51,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:51,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:51,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:51,705 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:51,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:51,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:22:51,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:51,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:51,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:51,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:51,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:51,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:51,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:51,710 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_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2024-11-28 02:22:52,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:52,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:52,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:52,087 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:52,088 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:52,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-11-28 02:22:55,094 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/data/06082bcae/7f62058f4d4c431ea7a85774c73dc027/FLAG0d81a11ff [2024-11-28 02:22:55,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:55,408 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-11-28 02:22:55,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/data/06082bcae/7f62058f4d4c431ea7a85774c73dc027/FLAG0d81a11ff [2024-11-28 02:22:55,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/data/06082bcae/7f62058f4d4c431ea7a85774c73dc027 [2024-11-28 02:22:55,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:55,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:55,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:55,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:55,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:55,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99d911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55, skipping insertion in model container [2024-11-28 02:22:55,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:55,653 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_20bcf260-9040-48e9-aacf-880c851ff513/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-11-28 02:22:55,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:55,688 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:55,705 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_20bcf260-9040-48e9-aacf-880c851ff513/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-11-28 02:22:55,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:55,729 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:55,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55 WrapperNode [2024-11-28 02:22:55,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:55,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:55,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:55,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:55,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,775 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-28 02:22:55,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:55,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:55,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:55,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,811 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 02:22:55,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,817 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:55,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:55,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:55,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:55,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:55,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:22:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:55,992 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:55,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:56,193 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-28 02:22:56,196 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:56,209 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:56,210 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:22:56,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56 BoogieIcfgContainer [2024-11-28 02:22:56,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:56,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:56,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:56,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:56,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:55" (1/3) ... [2024-11-28 02:22:56,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176f7772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (2/3) ... [2024-11-28 02:22:56,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176f7772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56" (3/3) ... [2024-11-28 02:22:56,227 INFO L128 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-11-28 02:22:56,246 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:56,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fragtest_simple.i that has 1 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 02:22:56,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:56,358 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;@5788615d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:56,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:22:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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 02:22:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:22:56,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:56,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:56,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:56,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash -368944929, now seen corresponding path program 1 times [2024-11-28 02:22:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:56,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564678687] [2024-11-28 02:22:56,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,582 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 02:22:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564678687] [2024-11-28 02:22:56,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564678687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:56,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:22:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130912065] [2024-11-28 02:22:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:56,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:22:56,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:56,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:22:56,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:22:56,624 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:22:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:56,642 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-28 02:22:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:22:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-11-28 02:22:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:56,653 INFO L225 Difference]: With dead ends: 37 [2024-11-28 02:22:56,653 INFO L226 Difference]: Without dead ends: 17 [2024-11-28 02:22:56,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:22:56,661 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:56,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:22:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-28 02:22:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-28 02:22:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 02:22:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-28 02:22:56,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2024-11-28 02:22:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:56,693 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-28 02:22:56,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 02:22:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-28 02:22:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:22:56,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:56,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:56,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:22:56,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:56,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash -683457316, now seen corresponding path program 1 times [2024-11-28 02:22:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298533836] [2024-11-28 02:22:56,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,983 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 02:22:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298533836] [2024-11-28 02:22:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298533836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:22:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117001532] [2024-11-28 02:22:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:56,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:22:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:56,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:22:56,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:22:56,986 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 02:22:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:57,044 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-11-28 02:22:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:22:57,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-28 02:22:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:57,046 INFO L225 Difference]: With dead ends: 22 [2024-11-28 02:22:57,046 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 02:22:57,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:57,047 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:57,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:22:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 02:22:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-11-28 02:22:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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 02:22:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-28 02:22:57,054 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2024-11-28 02:22:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:57,055 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-28 02:22:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 02:22:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-28 02:22:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 02:22:57,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:57,056 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:57,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:22:57,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:57,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1360501007, now seen corresponding path program 1 times [2024-11-28 02:22:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997775361] [2024-11-28 02:22:57,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997775361] [2024-11-28 02:22:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997775361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:22:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659821904] [2024-11-28 02:22:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:57,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:57,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:57,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:57,258 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 02:22:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:57,364 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 02:22:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:57,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2024-11-28 02:22:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:57,367 INFO L225 Difference]: With dead ends: 37 [2024-11-28 02:22:57,368 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 02:22:57,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:22:57,369 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 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 02:22:57,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 02:22:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2024-11-28 02:22:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 02:22:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 02:22:57,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 16 [2024-11-28 02:22:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:57,380 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 02:22:57,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 02:22:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 02:22:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 02:22:57,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:57,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:57,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:22:57,383 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:57,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1603947114, now seen corresponding path program 1 times [2024-11-28 02:22:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433682854] [2024-11-28 02:22:57,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433682854] [2024-11-28 02:22:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433682854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776818342] [2024-11-28 02:22:57,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:22:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:22:57,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:57,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776818342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:58,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:58,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-28 02:22:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756619738] [2024-11-28 02:22:58,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:58,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:22:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:58,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:22:58,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:22:58,056 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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 02:22:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:58,353 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-28 02:22:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:22:58,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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 19 [2024-11-28 02:22:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:58,354 INFO L225 Difference]: With dead ends: 49 [2024-11-28 02:22:58,355 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 02:22:58,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:22:58,357 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:58,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 64 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 02:22:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2024-11-28 02:22:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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 02:22:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 02:22:58,370 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2024-11-28 02:22:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:58,370 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 02:22:58,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 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 02:22:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 02:22:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:22:58,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:58,371 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:58,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:22:58,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:58,578 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:58,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash -749196702, now seen corresponding path program 2 times [2024-11-28 02:22:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615760707] [2024-11-28 02:22:58,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:58,604 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:58,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615760707] [2024-11-28 02:22:58,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615760707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993637160] [2024-11-28 02:22:58,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:22:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:58,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:58,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:22:58,838 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:22:58,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:58,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:58,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993637160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:59,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2024-11-28 02:22:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484455186] [2024-11-28 02:22:59,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:59,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:22:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:59,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:22:59,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:22:59,061 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 02:22:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:59,135 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-28 02:22:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:22:59,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 26 [2024-11-28 02:22:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:59,137 INFO L225 Difference]: With dead ends: 36 [2024-11-28 02:22:59,137 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 02:22:59,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:22:59,138 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:59,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:22:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 02:22:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-28 02:22:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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 02:22:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-28 02:22:59,145 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 26 [2024-11-28 02:22:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:59,146 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-28 02:22:59,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 02:22:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-28 02:22:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:22:59,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:59,147 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:59,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:22:59,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:59,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:59,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -980268139, now seen corresponding path program 3 times [2024-11-28 02:22:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302805170] [2024-11-28 02:22:59,352 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:22:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:59,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:22:59,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302805170] [2024-11-28 02:22:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302805170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576950934] [2024-11-28 02:22:59,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:22:59,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:59,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:59,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:22:59,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:22:59,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:22:59,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:22:59,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:59,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:22:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576950934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:59,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:59,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 02:22:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350262443] [2024-11-28 02:22:59,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:59,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:22:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:59,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:22:59,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:22:59,901 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 02:23:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:00,146 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-28 02:23:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:23:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 30 [2024-11-28 02:23:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:00,147 INFO L225 Difference]: With dead ends: 85 [2024-11-28 02:23:00,147 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 02:23:00,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:23:00,148 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:00,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 89 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 02:23:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2024-11-28 02:23:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 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 02:23:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-28 02:23:00,158 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 30 [2024-11-28 02:23:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:00,158 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-28 02:23:00,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 02:23:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-28 02:23:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:23:00,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:00,161 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:00,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:00,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:23:00,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:00,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1429204427, now seen corresponding path program 4 times [2024-11-28 02:23:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:00,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382222978] [2024-11-28 02:23:00,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:00,395 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:00,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382222978] [2024-11-28 02:23:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382222978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326450364] [2024-11-28 02:23:00,628 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:00,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:00,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:00,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:23:00,709 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:00,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:00,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:23:00,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:00,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326450364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:00,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-28 02:23:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026486438] [2024-11-28 02:23:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:00,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:23:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:00,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:23:00,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:00,932 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 02:23:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:01,042 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2024-11-28 02:23:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:23:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 36 [2024-11-28 02:23:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:01,044 INFO L225 Difference]: With dead ends: 56 [2024-11-28 02:23:01,044 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 02:23:01,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:23:01,045 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:01,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 02:23:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2024-11-28 02:23:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 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 02:23:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-28 02:23:01,052 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 36 [2024-11-28 02:23:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:01,052 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-28 02:23:01,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 02:23:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-28 02:23:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:23:01,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:01,054 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:01,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:01,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:01,255 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:01,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1135280155, now seen corresponding path program 5 times [2024-11-28 02:23:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439802084] [2024-11-28 02:23:01,255 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,295 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:23:01,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439802084] [2024-11-28 02:23:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439802084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:01,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249494661] [2024-11-28 02:23:01,576 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:01,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:01,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:01,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:01,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:23:01,668 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:23:01,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:01,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:23:01,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:01,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249494661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:02,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2024-11-28 02:23:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627626563] [2024-11-28 02:23:02,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:02,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:23:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:02,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:23:02,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:23:02,144 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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 02:23:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:02,462 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2024-11-28 02:23:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:23:02,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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 44 [2024-11-28 02:23:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:02,464 INFO L225 Difference]: With dead ends: 123 [2024-11-28 02:23:02,464 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 02:23:02,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:23:02,465 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:02,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 124 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 02:23:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2024-11-28 02:23:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 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 02:23:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-28 02:23:02,473 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 44 [2024-11-28 02:23:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:02,474 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-28 02:23:02,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 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 02:23:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-28 02:23:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:23:02,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:02,475 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:02,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:02,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:02,676 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:02,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1753698629, now seen corresponding path program 6 times [2024-11-28 02:23:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455227527] [2024-11-28 02:23:02,677 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:02,728 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:23:02,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:02,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455227527] [2024-11-28 02:23:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455227527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639905050] [2024-11-28 02:23:02,984 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:02,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:02,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:02,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:23:03,067 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:23:03,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:03,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:23:03,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:03,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639905050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:03,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-28 02:23:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645321906] [2024-11-28 02:23:03,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:03,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:23:03,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:03,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:23:03,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:23:03,384 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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 02:23:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:03,528 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2024-11-28 02:23:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:23:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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 50 [2024-11-28 02:23:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:03,531 INFO L225 Difference]: With dead ends: 70 [2024-11-28 02:23:03,531 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 02:23:03,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:23:03,532 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:03,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:03,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 02:23:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-28 02:23:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 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 02:23:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 02:23:03,546 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 50 [2024-11-28 02:23:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:03,546 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 02:23:03,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 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 02:23:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 02:23:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 02:23:03,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:03,549 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:03,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:03,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:03,754 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:03,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1472837281, now seen corresponding path program 7 times [2024-11-28 02:23:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:03,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238467573] [2024-11-28 02:23:03,754 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:04,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:04,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238467573] [2024-11-28 02:23:04,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238467573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:04,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022136775] [2024-11-28 02:23:04,175 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:04,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:04,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:04,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:04,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:23:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:04,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:23:04,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 96 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:04,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 96 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022136775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:04,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-11-28 02:23:04,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14651725] [2024-11-28 02:23:04,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:04,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:23:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:04,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:23:04,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:23:04,822 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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 02:23:05,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:05,101 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2024-11-28 02:23:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:23:05,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-28 02:23:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:05,102 INFO L225 Difference]: With dead ends: 125 [2024-11-28 02:23:05,103 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 02:23:05,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:23:05,106 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:05,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 133 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 02:23:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 63. [2024-11-28 02:23:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 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 02:23:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-28 02:23:05,122 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2024-11-28 02:23:05,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:05,123 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-28 02:23:05,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 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 02:23:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-28 02:23:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 02:23:05,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:05,125 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:05,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:23:05,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:05,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:05,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1288291736, now seen corresponding path program 8 times [2024-11-28 02:23:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683683702] [2024-11-28 02:23:05,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:05,351 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:05,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683683702] [2024-11-28 02:23:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683683702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889436738] [2024-11-28 02:23:05,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:05,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:05,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:23:05,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:05,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:05,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:23:05,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 77 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:06,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 77 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889436738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:06,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:06,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 27 [2024-11-28 02:23:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911680711] [2024-11-28 02:23:06,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:06,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:23:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:06,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:23:06,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:23:06,507 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 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 02:23:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:07,412 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2024-11-28 02:23:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:23:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 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 61 [2024-11-28 02:23:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:07,414 INFO L225 Difference]: With dead ends: 139 [2024-11-28 02:23:07,414 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 02:23:07,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 105 SyntacticMatches, 16 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=750, Invalid=3410, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 02:23:07,418 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 110 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:07,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 133 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 02:23:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2024-11-28 02:23:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 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 02:23:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2024-11-28 02:23:07,433 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 61 [2024-11-28 02:23:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:07,434 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2024-11-28 02:23:07,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 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 02:23:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2024-11-28 02:23:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:23:07,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:07,437 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:07,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:23:07,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:23:07,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:07,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1789860108, now seen corresponding path program 9 times [2024-11-28 02:23:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:07,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38558721] [2024-11-28 02:23:07,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:07,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:07,688 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:23:07,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 107 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38558721] [2024-11-28 02:23:08,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38558721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:08,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516252525] [2024-11-28 02:23:08,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:08,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:08,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:08,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:23:08,181 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 02:23:08,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:08,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:23:08,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 128 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:08,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 128 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:08,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516252525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:08,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:08,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2024-11-28 02:23:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581987950] [2024-11-28 02:23:08,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:08,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:23:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:08,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:23:08,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:23:08,873 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 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 02:23:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:09,196 INFO L93 Difference]: Finished difference Result 149 states and 171 transitions. [2024-11-28 02:23:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:23:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 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 68 [2024-11-28 02:23:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:09,197 INFO L225 Difference]: With dead ends: 149 [2024-11-28 02:23:09,197 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 02:23:09,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 109 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:23:09,200 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:09,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 177 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 02:23:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2024-11-28 02:23:09,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 72 states have internal predecessors, (76), 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 02:23:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-28 02:23:09,211 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2024-11-28 02:23:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:09,211 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-28 02:23:09,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.5161290322580645) internal successors, (109), 31 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 02:23:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-28 02:23:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:23:09,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:09,213 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:09,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:23:09,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,418 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:09,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1593613819, now seen corresponding path program 10 times [2024-11-28 02:23:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950593762] [2024-11-28 02:23:09,418 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:09,455 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:09,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:09,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:09,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950593762] [2024-11-28 02:23:09,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950593762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:09,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836436954] [2024-11-28 02:23:09,755 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:09,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:09,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:09,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:23:09,843 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:09,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:09,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:23:09,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:09,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 126 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:10,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836436954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:10,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:10,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-11-28 02:23:10,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522826339] [2024-11-28 02:23:10,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:10,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:23:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:10,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:23:10,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:23:10,189 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 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 02:23:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:10,348 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2024-11-28 02:23:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:23:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 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 71 [2024-11-28 02:23:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:10,349 INFO L225 Difference]: With dead ends: 91 [2024-11-28 02:23:10,349 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 02:23:10,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 131 SyntacticMatches, 17 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=367, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:23:10,350 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:10,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 166 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 02:23:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-28 02:23:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 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 02:23:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2024-11-28 02:23:10,357 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 71 [2024-11-28 02:23:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:10,358 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2024-11-28 02:23:10,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 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 02:23:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2024-11-28 02:23:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 02:23:10,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:10,359 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:10,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:23:10,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:23:10,563 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:10,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash -519412255, now seen corresponding path program 11 times [2024-11-28 02:23:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:10,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813037005] [2024-11-28 02:23:10,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:10,616 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:23:10,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813037005] [2024-11-28 02:23:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813037005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962813705] [2024-11-28 02:23:11,078 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:11,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:11,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:11,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:23:11,179 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:23:11,179 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:11,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:23:11,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:11,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 200 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962813705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:12,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 36 [2024-11-28 02:23:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366364352] [2024-11-28 02:23:12,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:12,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 02:23:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:12,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 02:23:12,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:23:12,015 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 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 02:23:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:12,537 INFO L93 Difference]: Finished difference Result 218 states and 245 transitions. [2024-11-28 02:23:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:23:12,538 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 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 79 [2024-11-28 02:23:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:12,539 INFO L225 Difference]: With dead ends: 218 [2024-11-28 02:23:12,539 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 02:23:12,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 127 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=846, Invalid=2346, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 02:23:12,541 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 134 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:12,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 251 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 02:23:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2024-11-28 02:23:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 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 02:23:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-28 02:23:12,549 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 79 [2024-11-28 02:23:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:12,549 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-28 02:23:12,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 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 02:23:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-28 02:23:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 02:23:12,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:12,550 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:12,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:23:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:12,751 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1911632705, now seen corresponding path program 12 times [2024-11-28 02:23:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126050929] [2024-11-28 02:23:12,751 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:12,798 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 02:23:12,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 155 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126050929] [2024-11-28 02:23:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126050929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853280955] [2024-11-28 02:23:13,153 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:13,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:13,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:23:13,267 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 02:23:13,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:13,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:23:13,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 187 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 187 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853280955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:13,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:13,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-11-28 02:23:13,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264716093] [2024-11-28 02:23:13,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:13,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:23:13,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:13,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:23:13,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:23:13,708 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 02:23:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:13,897 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2024-11-28 02:23:13,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:23:13,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 85 [2024-11-28 02:23:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:13,898 INFO L225 Difference]: With dead ends: 105 [2024-11-28 02:23:13,898 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:23:13,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:23:13,899 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 14 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:13,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 217 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:23:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2024-11-28 02:23:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 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 02:23:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-28 02:23:13,917 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 85 [2024-11-28 02:23:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:13,917 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-28 02:23:13,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 02:23:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-28 02:23:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:23:13,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:13,918 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:13,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:23:14,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:14,118 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:14,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 525358375, now seen corresponding path program 13 times [2024-11-28 02:23:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552467123] [2024-11-28 02:23:14,119 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 255 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552467123] [2024-11-28 02:23:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552467123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823021320] [2024-11-28 02:23:14,728 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:14,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:14,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:14,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:14,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:23:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:23:14,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 286 proven. 187 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:15,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 286 proven. 187 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:15,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823021320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:15,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:15,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-11-28 02:23:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332924536] [2024-11-28 02:23:15,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:15,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 02:23:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:15,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 02:23:15,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:23:15,709 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:16,131 INFO L93 Difference]: Finished difference Result 200 states and 228 transitions. [2024-11-28 02:23:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:23:16,131 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 02:23:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:16,133 INFO L225 Difference]: With dead ends: 200 [2024-11-28 02:23:16,133 INFO L226 Difference]: Without dead ends: 147 [2024-11-28 02:23:16,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 150 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:23:16,135 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:16,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 273 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-28 02:23:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98. [2024-11-28 02:23:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 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 02:23:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2024-11-28 02:23:16,142 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 93 [2024-11-28 02:23:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:16,143 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2024-11-28 02:23:16,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2024-11-28 02:23:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:23:16,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:16,144 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:16,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:23:16,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:23:16,345 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:16,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1667351552, now seen corresponding path program 14 times [2024-11-28 02:23:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529408840] [2024-11-28 02:23:16,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:16,378 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:16,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 255 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529408840] [2024-11-28 02:23:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529408840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74871358] [2024-11-28 02:23:16,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:16,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:16,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:16,985 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:16,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:23:17,085 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:17,085 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:17,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:23:17,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 288 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:17,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 288 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74871358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:18,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2024-11-28 02:23:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221824192] [2024-11-28 02:23:18,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:18,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 02:23:18,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:18,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 02:23:18,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=1383, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:23:18,108 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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 02:23:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:18,492 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2024-11-28 02:23:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:23:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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 96 [2024-11-28 02:23:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:18,493 INFO L225 Difference]: With dead ends: 209 [2024-11-28 02:23:18,494 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 02:23:18,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=789, Invalid=2291, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:23:18,495 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 142 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:18,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 256 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 02:23:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 101. [2024-11-28 02:23:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 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 02:23:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2024-11-28 02:23:18,503 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 96 [2024-11-28 02:23:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:18,503 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2024-11-28 02:23:18,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 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 02:23:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2024-11-28 02:23:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:23:18,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:18,504 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:18,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:23:18,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:23:18,709 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:18,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1944831353, now seen corresponding path program 15 times [2024-11-28 02:23:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475930306] [2024-11-28 02:23:18,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:18,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:18,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 02:23:18,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 222 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475930306] [2024-11-28 02:23:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475930306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041891017] [2024-11-28 02:23:19,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:19,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:19,286 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:19,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:23:19,413 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 02:23:19,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:19,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:23:19,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 260 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:19,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 260 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041891017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:19,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-11-28 02:23:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322940521] [2024-11-28 02:23:19,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:19,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:23:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:19,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:23:19,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:23:19,890 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 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 02:23:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:20,100 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2024-11-28 02:23:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:23:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 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 99 [2024-11-28 02:23:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:20,102 INFO L225 Difference]: With dead ends: 119 [2024-11-28 02:23:20,102 INFO L226 Difference]: Without dead ends: 117 [2024-11-28 02:23:20,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 181 SyntacticMatches, 26 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=411, Invalid=711, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:23:20,103 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:20,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 216 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-28 02:23:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2024-11-28 02:23:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 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 02:23:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2024-11-28 02:23:20,111 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 99 [2024-11-28 02:23:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:20,111 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2024-11-28 02:23:20,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 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 02:23:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2024-11-28 02:23:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 02:23:20,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:20,112 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:20,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:23:20,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:23:20,313 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:20,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash -801982867, now seen corresponding path program 16 times [2024-11-28 02:23:20,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:20,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740186561] [2024-11-28 02:23:20,313 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:20,344 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:20,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 392 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740186561] [2024-11-28 02:23:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740186561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621445371] [2024-11-28 02:23:20,970 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:20,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:20,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:20,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:23:21,084 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:21,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:21,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:23:21,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 390 proven. 260 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:21,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 390 proven. 260 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621445371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:22,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 45 [2024-11-28 02:23:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837884577] [2024-11-28 02:23:22,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:22,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 02:23:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:22,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 02:23:22,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:23:22,161 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 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 02:23:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:22,692 INFO L93 Difference]: Finished difference Result 230 states and 262 transitions. [2024-11-28 02:23:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:23:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 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 107 [2024-11-28 02:23:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:22,694 INFO L225 Difference]: With dead ends: 230 [2024-11-28 02:23:22,694 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 02:23:22,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 173 SyntacticMatches, 27 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 02:23:22,697 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 139 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:22,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 280 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 02:23:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2024-11-28 02:23:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 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 02:23:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2024-11-28 02:23:22,707 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 107 [2024-11-28 02:23:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:22,707 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2024-11-28 02:23:22,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 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 02:23:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2024-11-28 02:23:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:23:22,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:22,708 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:22,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:22,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:22,913 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:22,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:22,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1792494202, now seen corresponding path program 17 times [2024-11-28 02:23:22,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:22,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423560045] [2024-11-28 02:23:22,914 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:22,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:22,980 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-28 02:23:22,981 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423560045] [2024-11-28 02:23:23,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423560045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941863543] [2024-11-28 02:23:23,749 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:23,751 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:23,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:23:23,883 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-28 02:23:23,883 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:23,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:23:23,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:24,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 392 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941863543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:24,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:24,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 47 [2024-11-28 02:23:24,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846215244] [2024-11-28 02:23:24,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:24,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 02:23:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:24,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 02:23:24,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1636, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:23:24,941 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 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 02:23:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:25,472 INFO L93 Difference]: Finished difference Result 239 states and 273 transitions. [2024-11-28 02:23:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:23:25,472 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 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 110 [2024-11-28 02:23:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:25,473 INFO L225 Difference]: With dead ends: 239 [2024-11-28 02:23:25,473 INFO L226 Difference]: Without dead ends: 176 [2024-11-28 02:23:25,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 176 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1021, Invalid=2761, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 02:23:25,475 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 179 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:25,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 309 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-28 02:23:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 115. [2024-11-28 02:23:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 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 02:23:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2024-11-28 02:23:25,485 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 110 [2024-11-28 02:23:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:25,485 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2024-11-28 02:23:25,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 47 states have internal predecessors, (167), 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 02:23:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2024-11-28 02:23:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:23:25,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:25,487 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:25,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:23:25,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-28 02:23:25,687 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:25,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 604615629, now seen corresponding path program 18 times [2024-11-28 02:23:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 02:23:25,688 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:25,732 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 02:23:25,733 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 301 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 02:23:26,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149436819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421555992] [2024-11-28 02:23:26,257 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:26,260 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:26,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:23:26,391 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 02:23:26,391 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:26,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:23:26,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 345 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:26,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 345 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:26,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421555992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:26,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:26,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-11-28 02:23:26,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349448082] [2024-11-28 02:23:26,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:26,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:23:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:26,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:23:26,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=282, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:23:26,940 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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 02:23:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:27,181 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2024-11-28 02:23:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 02:23:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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 02:23:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:27,182 INFO L225 Difference]: With dead ends: 133 [2024-11-28 02:23:27,182 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 02:23:27,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 208 SyntacticMatches, 29 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:23:27,183 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:27,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 249 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 02:23:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2024-11-28 02:23:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 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 02:23:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2024-11-28 02:23:27,191 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 113 [2024-11-28 02:23:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:27,191 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2024-11-28 02:23:27,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 states have internal predecessors, (138), 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 02:23:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2024-11-28 02:23:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 02:23:27,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:27,192 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:27,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:27,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:23:27,392 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:27,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2041214541, now seen corresponding path program 19 times [2024-11-28 02:23:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:27,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336676802] [2024-11-28 02:23:27,393 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:27,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 467 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:28,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336676802] [2024-11-28 02:23:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336676802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416148140] [2024-11-28 02:23:28,306 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:28,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:28,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:28,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:23:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:28,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:23:28,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 510 proven. 345 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:29,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 510 proven. 345 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416148140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:29,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2024-11-28 02:23:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004104285] [2024-11-28 02:23:29,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:29,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 02:23:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:29,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 02:23:29,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=2123, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:23:29,758 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 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 02:23:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:30,323 INFO L93 Difference]: Finished difference Result 260 states and 296 transitions. [2024-11-28 02:23:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 02:23:30,323 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 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 121 [2024-11-28 02:23:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:30,324 INFO L225 Difference]: With dead ends: 260 [2024-11-28 02:23:30,324 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 02:23:30,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 194 SyntacticMatches, 30 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1179, Invalid=3513, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 02:23:30,327 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 166 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:30,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 365 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 02:23:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 126. [2024-11-28 02:23:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 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 02:23:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2024-11-28 02:23:30,339 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 121 [2024-11-28 02:23:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:30,340 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2024-11-28 02:23:30,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.660377358490566) internal successors, (194), 53 states have internal predecessors, (194), 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 02:23:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2024-11-28 02:23:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 02:23:30,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:30,341 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:30,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:23:30,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:23:30,546 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:30,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1338943756, now seen corresponding path program 20 times [2024-11-28 02:23:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:30,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520753581] [2024-11-28 02:23:30,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:30,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:30,574 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:30,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 467 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520753581] [2024-11-28 02:23:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520753581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725109574] [2024-11-28 02:23:31,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:31,468 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:31,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:23:31,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:31,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:31,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:23:31,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 512 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:32,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 512 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:32,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725109574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:32,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:32,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2024-11-28 02:23:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789367806] [2024-11-28 02:23:32,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:32,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 02:23:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:32,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 02:23:32,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:23:32,999 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 02:23:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:33,561 INFO L93 Difference]: Finished difference Result 269 states and 307 transitions. [2024-11-28 02:23:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 02:23:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 124 [2024-11-28 02:23:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:33,563 INFO L225 Difference]: With dead ends: 269 [2024-11-28 02:23:33,563 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 02:23:33,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 197 SyntacticMatches, 32 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1301, Invalid=3811, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 02:23:33,565 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 172 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:33,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 352 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 02:23:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 129. [2024-11-28 02:23:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 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 02:23:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-11-28 02:23:33,574 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 124 [2024-11-28 02:23:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:33,574 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-11-28 02:23:33,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 02:23:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-11-28 02:23:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:23:33,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:33,575 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:33,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:23:33,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:23:33,775 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:33,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash -168452333, now seen corresponding path program 21 times [2024-11-28 02:23:33,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:33,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247436622] [2024-11-28 02:23:33,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:33,836 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 02:23:33,836 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 392 proven. 562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247436622] [2024-11-28 02:23:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247436622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459379690] [2024-11-28 02:23:34,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:34,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:34,468 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:34,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:23:34,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 02:23:34,634 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:34,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:23:34,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 442 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:34,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 442 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459379690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:35,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-11-28 02:23:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966178144] [2024-11-28 02:23:35,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:35,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:23:35,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:35,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:23:35,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=333, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:23:35,311 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 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 02:23:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:35,585 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2024-11-28 02:23:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 02:23:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 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 127 [2024-11-28 02:23:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:35,587 INFO L225 Difference]: With dead ends: 147 [2024-11-28 02:23:35,587 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 02:23:35,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 234 SyntacticMatches, 33 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=633, Invalid=1089, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 02:23:35,588 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:35,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 02:23:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2024-11-28 02:23:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 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 02:23:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2024-11-28 02:23:35,600 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 127 [2024-11-28 02:23:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:35,601 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2024-11-28 02:23:35,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 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 02:23:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2024-11-28 02:23:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:23:35,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:35,602 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:35,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:23:35,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:23:35,805 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:35,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1713582343, now seen corresponding path program 22 times [2024-11-28 02:23:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713601346] [2024-11-28 02:23:35,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:35,838 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:35,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 544 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:37,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713601346] [2024-11-28 02:23:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713601346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530442811] [2024-11-28 02:23:37,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:37,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:37,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:37,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:37,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:23:37,383 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:37,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:37,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:23:37,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 648 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:38,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 648 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:39,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530442811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:39,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:39,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 39] total 64 [2024-11-28 02:23:39,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749130993] [2024-11-28 02:23:39,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:39,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 02:23:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:39,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 02:23:39,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3162, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 02:23:39,135 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 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 02:23:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:40,768 INFO L93 Difference]: Finished difference Result 370 states and 413 transitions. [2024-11-28 02:23:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 02:23:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 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 135 [2024-11-28 02:23:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:40,769 INFO L225 Difference]: With dead ends: 370 [2024-11-28 02:23:40,769 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 02:23:40,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 233 SyntacticMatches, 33 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5085 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2813, Invalid=12193, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 02:23:40,772 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 608 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:40,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 543 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:23:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 02:23:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 143. [2024-11-28 02:23:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 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 02:23:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2024-11-28 02:23:40,786 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 135 [2024-11-28 02:23:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:40,787 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2024-11-28 02:23:40,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.5625) internal successors, (228), 64 states have internal predecessors, (228), 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 02:23:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2024-11-28 02:23:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:23:40,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:40,788 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:40,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:23:40,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:23:40,992 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:40,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -478413735, now seen corresponding path program 23 times [2024-11-28 02:23:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109104005] [2024-11-28 02:23:40,993 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:41,053 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 02:23:41,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109104005] [2024-11-28 02:23:41,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109104005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:41,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487799314] [2024-11-28 02:23:41,821 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:41,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:41,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:41,823 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:41,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:23:42,002 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 02:23:42,002 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:42,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 02:23:42,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:42,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 551 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:42,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487799314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:42,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:42,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2024-11-28 02:23:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231321041] [2024-11-28 02:23:42,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:42,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:23:42,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:42,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:23:42,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=342, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:23:42,762 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 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 02:23:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:43,079 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2024-11-28 02:23:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 02:23:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 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 141 [2024-11-28 02:23:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:43,080 INFO L225 Difference]: With dead ends: 161 [2024-11-28 02:23:43,081 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 02:23:43,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 260 SyntacticMatches, 38 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=758, Invalid=1222, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:23:43,082 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:43,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 322 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:43,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 02:23:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2024-11-28 02:23:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 150 states have internal predecessors, (154), 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 02:23:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2024-11-28 02:23:43,092 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 141 [2024-11-28 02:23:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:43,093 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2024-11-28 02:23:43,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 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 02:23:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2024-11-28 02:23:43,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 02:23:43,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:43,094 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:43,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 02:23:43,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:23:43,294 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:43,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:43,295 INFO L85 PathProgramCache]: Analyzing trace with hash 141329983, now seen corresponding path program 24 times [2024-11-28 02:23:43,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:43,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597045436] [2024-11-28 02:23:43,295 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:43,367 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 02:23:43,367 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 743 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:44,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:44,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597045436] [2024-11-28 02:23:44,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597045436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586768676] [2024-11-28 02:23:44,666 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:44,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:44,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:44,667 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:44,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:23:44,845 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 02:23:44,845 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:44,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 02:23:44,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 800 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:45,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 800 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586768676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:46,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2024-11-28 02:23:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119619354] [2024-11-28 02:23:46,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:46,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 02:23:46,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:46,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 02:23:46,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=3496, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:23:46,753 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:47,871 INFO L93 Difference]: Finished difference Result 408 states and 455 transitions. [2024-11-28 02:23:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 02:23:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-28 02:23:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:47,872 INFO L225 Difference]: With dead ends: 408 [2024-11-28 02:23:47,872 INFO L226 Difference]: Without dead ends: 242 [2024-11-28 02:23:47,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 236 SyntacticMatches, 37 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3889 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2886, Invalid=8886, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 02:23:47,873 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 277 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:47,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 449 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:23:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-28 02:23:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 157. [2024-11-28 02:23:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0256410256410255) internal successors, (160), 156 states have internal predecessors, (160), 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 02:23:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2024-11-28 02:23:47,883 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 149 [2024-11-28 02:23:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:47,884 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2024-11-28 02:23:47,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.6470588235294117) internal successors, (248), 68 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2024-11-28 02:23:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:23:47,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:47,885 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:47,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:23:48,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:23:48,085 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:48,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash -742339681, now seen corresponding path program 25 times [2024-11-28 02:23:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190911654] [2024-11-28 02:23:48,086 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 610 proven. 862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190911654] [2024-11-28 02:23:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190911654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650651333] [2024-11-28 02:23:49,032 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:49,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:49,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:49,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:23:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:49,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 02:23:49,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 672 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:49,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 672 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:50,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650651333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:50,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-11-28 02:23:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856603040] [2024-11-28 02:23:50,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:50,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:23:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:50,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:23:50,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:50,041 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 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 02:23:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:50,388 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2024-11-28 02:23:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:23:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 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 155 [2024-11-28 02:23:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:50,389 INFO L225 Difference]: With dead ends: 175 [2024-11-28 02:23:50,389 INFO L226 Difference]: Without dead ends: 173 [2024-11-28 02:23:50,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 285 SyntacticMatches, 42 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=1547, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 02:23:50,391 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:50,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 308 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-28 02:23:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2024-11-28 02:23:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.024390243902439) internal successors, (168), 164 states have internal predecessors, (168), 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 02:23:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2024-11-28 02:23:50,403 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 155 [2024-11-28 02:23:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:50,403 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2024-11-28 02:23:50,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 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 02:23:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2024-11-28 02:23:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 02:23:50,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:50,404 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:50,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:23:50,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:23:50,605 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:50,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1428729733, now seen corresponding path program 26 times [2024-11-28 02:23:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:50,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723417748] [2024-11-28 02:23:50,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:50,636 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:50,637 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 905 proven. 735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723417748] [2024-11-28 02:23:52,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723417748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610856690] [2024-11-28 02:23:52,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:52,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:52,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:52,130 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:52,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:23:52,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:52,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:52,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:23:52,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 966 proven. 672 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:53,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 966 proven. 672 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610856690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:54,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:54,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-11-28 02:23:54,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115246311] [2024-11-28 02:23:54,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:54,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 02:23:54,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:54,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 02:23:54,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 02:23:54,294 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 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 02:23:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:55,250 INFO L93 Difference]: Finished difference Result 350 states and 398 transitions. [2024-11-28 02:23:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 02:23:55,250 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 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 163 [2024-11-28 02:23:55,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:55,251 INFO L225 Difference]: With dead ends: 350 [2024-11-28 02:23:55,252 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 02:23:55,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 260 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 02:23:55,254 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 238 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:55,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 572 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:23:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 02:23:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 168. [2024-11-28 02:23:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0239520958083832) internal successors, (171), 167 states have internal predecessors, (171), 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 02:23:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2024-11-28 02:23:55,266 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 163 [2024-11-28 02:23:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:55,267 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2024-11-28 02:23:55,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.6619718309859155) internal successors, (260), 71 states have internal predecessors, (260), 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 02:23:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2024-11-28 02:23:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:23:55,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:55,268 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:55,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:23:55,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:23:55,468 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:55,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -678785122, now seen corresponding path program 27 times [2024-11-28 02:23:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:55,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468798219] [2024-11-28 02:23:55,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:55,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:55,574 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-28 02:23:55,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 905 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:57,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468798219] [2024-11-28 02:23:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468798219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:57,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54076976] [2024-11-28 02:23:57,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:57,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:57,049 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:23:57,251 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-28 02:23:57,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:57,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 02:23:57,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 968 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:58,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 968 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54076976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:59,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2024-11-28 02:23:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416445817] [2024-11-28 02:23:59,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:59,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 02:23:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:59,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 02:23:59,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 02:23:59,395 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 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 02:24:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:00,329 INFO L93 Difference]: Finished difference Result 359 states and 409 transitions. [2024-11-28 02:24:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:24:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 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 166 [2024-11-28 02:24:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:00,330 INFO L225 Difference]: With dead ends: 359 [2024-11-28 02:24:00,330 INFO L226 Difference]: Without dead ends: 264 [2024-11-28 02:24:00,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 263 SyntacticMatches, 44 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3380 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2309, Invalid=6811, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 02:24:00,332 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 253 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:00,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 545 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-28 02:24:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 171. [2024-11-28 02:24:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 states have internal predecessors, (174), 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 02:24:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2024-11-28 02:24:00,344 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2024-11-28 02:24:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:00,344 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2024-11-28 02:24:00,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.6027397260273974) internal successors, (263), 73 states have internal predecessors, (263), 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 02:24:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2024-11-28 02:24:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:24:00,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:00,345 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:00,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:00,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:00,546 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:00,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1821897499, now seen corresponding path program 28 times [2024-11-28 02:24:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689918969] [2024-11-28 02:24:00,547 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:00,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:00,589 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:00,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689918969] [2024-11-28 02:24:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689918969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216857102] [2024-11-28 02:24:01,376 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:01,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:01,377 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:01,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:24:01,569 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:01,569 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:01,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 02:24:01,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:01,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 805 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216857102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:02,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2024-11-28 02:24:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093611715] [2024-11-28 02:24:02,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:02,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:24:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:02,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:24:02,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:24:02,460 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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 02:24:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:02,834 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2024-11-28 02:24:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 02:24:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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 169 [2024-11-28 02:24:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:02,836 INFO L225 Difference]: With dead ends: 189 [2024-11-28 02:24:02,836 INFO L226 Difference]: Without dead ends: 187 [2024-11-28 02:24:02,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 313 SyntacticMatches, 45 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:24:02,837 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 11 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:02,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 365 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:24:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-28 02:24:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 179. [2024-11-28 02:24:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 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 02:24:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2024-11-28 02:24:02,850 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 169 [2024-11-28 02:24:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:02,850 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2024-11-28 02:24:02,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.413793103448276) internal successors, (186), 29 states have internal predecessors, (186), 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 02:24:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2024-11-28 02:24:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:24:02,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:02,852 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:02,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 02:24:03,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:03,053 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:03,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:03,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1756711627, now seen corresponding path program 29 times [2024-11-28 02:24:03,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:03,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289493480] [2024-11-28 02:24:03,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:03,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:03,150 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 02:24:03,151 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289493480] [2024-11-28 02:24:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289493480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825122575] [2024-11-28 02:24:04,619 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:04,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:04,621 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:04,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:24:04,843 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 02:24:04,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:04,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 02:24:04,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:06,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1152 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825122575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:07,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:07,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 78 [2024-11-28 02:24:07,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774770875] [2024-11-28 02:24:07,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:07,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 02:24:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:07,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 02:24:07,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1428, Invalid=4578, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 02:24:07,229 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 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 02:24:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:08,686 INFO L93 Difference]: Finished difference Result 484 states and 539 transitions. [2024-11-28 02:24:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-28 02:24:08,687 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 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) Word has length 177 [2024-11-28 02:24:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:08,688 INFO L225 Difference]: With dead ends: 484 [2024-11-28 02:24:08,688 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 02:24:08,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 281 SyntacticMatches, 46 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5124 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4024, Invalid=11978, Unknown=0, NotChecked=0, Total=16002 [2024-11-28 02:24:08,690 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 377 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:08,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 615 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 02:24:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 185. [2024-11-28 02:24:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 184 states have internal predecessors, (188), 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 02:24:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2024-11-28 02:24:08,705 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 177 [2024-11-28 02:24:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:08,706 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2024-11-28 02:24:08,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.6538461538461537) internal successors, (285), 78 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 02:24:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2024-11-28 02:24:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-28 02:24:08,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:08,707 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:08,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:08,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:08,908 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:08,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1265254357, now seen corresponding path program 30 times [2024-11-28 02:24:08,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:08,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741482210] [2024-11-28 02:24:08,908 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:08,970 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 02:24:08,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 876 proven. 1226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:10,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741482210] [2024-11-28 02:24:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741482210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146619301] [2024-11-28 02:24:10,032 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:10,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:10,034 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:10,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:24:10,300 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 02:24:10,300 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:10,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 02:24:10,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 950 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:10,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 950 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146619301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:11,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-11-28 02:24:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742152010] [2024-11-28 02:24:11,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:11,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:24:11,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:11,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:24:11,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:24:11,371 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 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 02:24:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:11,797 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2024-11-28 02:24:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:24:11,797 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 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 183 [2024-11-28 02:24:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:11,799 INFO L225 Difference]: With dead ends: 203 [2024-11-28 02:24:11,799 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 02:24:11,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 338 SyntacticMatches, 49 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1221, Invalid=2085, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 02:24:11,800 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:11,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 412 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:24:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 02:24:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 193. [2024-11-28 02:24:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 192 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 02:24:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2024-11-28 02:24:11,811 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 183 [2024-11-28 02:24:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:11,811 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2024-11-28 02:24:11,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 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 02:24:11,811 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2024-11-28 02:24:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-28 02:24:11,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:11,812 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:11,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:12,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:12,013 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:12,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1899386897, now seen corresponding path program 31 times [2024-11-28 02:24:12,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:12,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854313416] [2024-11-28 02:24:12,013 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:12,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1277 proven. 1025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:13,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854313416] [2024-11-28 02:24:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854313416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209186071] [2024-11-28 02:24:13,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:13,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:13,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:13,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 02:24:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:13,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 02:24:13,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1350 proven. 950 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:24:15,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 1350 proven. 950 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:24:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209186071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:16,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2024-11-28 02:24:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663696781] [2024-11-28 02:24:16,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:16,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-28 02:24:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:16,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-28 02:24:16,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=5263, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 02:24:16,453 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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 02:24:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:17,497 INFO L93 Difference]: Finished difference Result 410 states and 466 transitions. [2024-11-28 02:24:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 02:24:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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 191 [2024-11-28 02:24:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:17,499 INFO L225 Difference]: With dead ends: 410 [2024-11-28 02:24:17,499 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 02:24:17,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 304 SyntacticMatches, 50 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4395 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2949, Invalid=8823, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 02:24:17,500 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 307 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:17,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 640 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 02:24:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 196. [2024-11-28 02:24:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0205128205128204) internal successors, (199), 195 states have internal predecessors, (199), 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 02:24:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 199 transitions. [2024-11-28 02:24:17,515 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 199 transitions. Word has length 191 [2024-11-28 02:24:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:17,516 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 199 transitions. [2024-11-28 02:24:17,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.6626506024096384) internal successors, (304), 83 states have internal predecessors, (304), 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 02:24:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 199 transitions. [2024-11-28 02:24:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-28 02:24:17,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:17,517 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:17,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:17,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:17,718 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:17,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2027260074, now seen corresponding path program 32 times [2024-11-28 02:24:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:17,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551947200] [2024-11-28 02:24:17,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:17,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:17,773 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:17,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1277 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551947200] [2024-11-28 02:24:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551947200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532240396] [2024-11-28 02:24:19,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:19,247 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:19,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:24:19,467 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:19,467 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:19,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 02:24:19,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1352 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:21,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1352 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532240396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:22,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2024-11-28 02:24:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480782324] [2024-11-28 02:24:22,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:22,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 02:24:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:22,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 02:24:22,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 02:24:22,361 INFO L87 Difference]: Start difference. First operand 196 states and 199 transitions. Second operand has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 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 02:24:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:23,569 INFO L93 Difference]: Finished difference Result 419 states and 477 transitions. [2024-11-28 02:24:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:24:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 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 194 [2024-11-28 02:24:23,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:23,571 INFO L225 Difference]: With dead ends: 419 [2024-11-28 02:24:23,571 INFO L226 Difference]: Without dead ends: 308 [2024-11-28 02:24:23,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 307 SyntacticMatches, 52 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3141, Invalid=9291, Unknown=0, NotChecked=0, Total=12432 [2024-11-28 02:24:23,572 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 316 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:23,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 530 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-28 02:24:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 199. [2024-11-28 02:24:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.02020202020202) internal successors, (202), 198 states have internal predecessors, (202), 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 02:24:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2024-11-28 02:24:23,602 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 194 [2024-11-28 02:24:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:23,602 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2024-11-28 02:24:23,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.611764705882353) internal successors, (307), 85 states have internal predecessors, (307), 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 02:24:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2024-11-28 02:24:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 02:24:23,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:23,604 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:23,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:23,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 02:24:23,805 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:23,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1861084529, now seen corresponding path program 33 times [2024-11-28 02:24:23,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:23,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534733771] [2024-11-28 02:24:23,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:24:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:23,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-28 02:24:23,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1027 proven. 1432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534733771] [2024-11-28 02:24:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534733771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409292360] [2024-11-28 02:24:24,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:24:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:24,879 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:24,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 02:24:25,204 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-28 02:24:25,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:25,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 02:24:25,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1107 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:25,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1107 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409292360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:26,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-11-28 02:24:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993571034] [2024-11-28 02:24:26,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:26,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:24:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:26,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:24:26,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=648, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:24:26,433 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 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 02:24:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:26,921 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2024-11-28 02:24:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 02:24:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 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 197 [2024-11-28 02:24:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:26,922 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:24:26,922 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 02:24:26,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 363 SyntacticMatches, 54 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1398, Invalid=2384, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 02:24:26,923 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 14 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:26,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 502 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:24:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 02:24:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2024-11-28 02:24:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0194174757281553) internal successors, (210), 206 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2024-11-28 02:24:26,938 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 197 [2024-11-28 02:24:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:26,938 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2024-11-28 02:24:26,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.529411764705882) internal successors, (222), 34 states have internal predecessors, (222), 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 02:24:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2024-11-28 02:24:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-28 02:24:26,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:26,940 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:26,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:27,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:27,145 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:27,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1034954921, now seen corresponding path program 34 times [2024-11-28 02:24:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:27,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541429174] [2024-11-28 02:24:27,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:27,195 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:27,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1568 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:28,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:28,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541429174] [2024-11-28 02:24:28,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541429174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:28,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589880890] [2024-11-28 02:24:28,714 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:28,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:28,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:28,720 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:28,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 02:24:28,985 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:28,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:28,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 02:24:28,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1566 proven. 1107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:24:30,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1566 proven. 1107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:24:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589880890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:32,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 87 [2024-11-28 02:24:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747568844] [2024-11-28 02:24:32,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:32,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-28 02:24:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:32,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-28 02:24:32,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 02:24:32,197 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 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 02:24:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:33,277 INFO L93 Difference]: Finished difference Result 440 states and 500 transitions. [2024-11-28 02:24:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 02:24:33,277 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 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 205 [2024-11-28 02:24:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:33,279 INFO L225 Difference]: With dead ends: 440 [2024-11-28 02:24:33,279 INFO L226 Difference]: Without dead ends: 323 [2024-11-28 02:24:33,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 327 SyntacticMatches, 55 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3391, Invalid=9719, Unknown=0, NotChecked=0, Total=13110 [2024-11-28 02:24:33,280 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 328 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:33,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 580 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-28 02:24:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 210. [2024-11-28 02:24:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0191387559808613) internal successors, (213), 209 states have internal predecessors, (213), 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 02:24:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2024-11-28 02:24:33,296 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 205 [2024-11-28 02:24:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:33,296 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 213 transitions. [2024-11-28 02:24:33,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.6551724137931036) internal successors, (318), 87 states have internal predecessors, (318), 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 02:24:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 213 transitions. [2024-11-28 02:24:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 02:24:33,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:33,298 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:33,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 02:24:33,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:33,498 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:33,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1606256688, now seen corresponding path program 35 times [2024-11-28 02:24:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:33,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343592599] [2024-11-28 02:24:33,499 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:33,611 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 02:24:33,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1190 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343592599] [2024-11-28 02:24:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343592599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609663265] [2024-11-28 02:24:34,748 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:24:34,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:34,753 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:34,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 02:24:35,125 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 02:24:35,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:35,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:24:35,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1568 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:37,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 1568 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609663265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:39,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 60, 60] total 119 [2024-11-28 02:24:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309272896] [2024-11-28 02:24:39,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:39,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 02:24:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:39,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 02:24:39,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2294, Invalid=11748, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 02:24:39,973 INFO L87 Difference]: Start difference. First operand 210 states and 213 transitions. Second operand has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 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 02:24:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:45,628 INFO L93 Difference]: Finished difference Result 454 states and 517 transitions. [2024-11-28 02:24:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-28 02:24:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 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 208 [2024-11-28 02:24:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:45,630 INFO L225 Difference]: With dead ends: 454 [2024-11-28 02:24:45,630 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 02:24:45,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 357 SyntacticMatches, 29 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22264 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=10345, Invalid=58037, Unknown=0, NotChecked=0, Total=68382 [2024-11-28 02:24:45,635 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 731 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:45,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 424 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:24:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 02:24:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 217. [2024-11-28 02:24:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.0185185185185186) internal successors, (220), 216 states have internal predecessors, (220), 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 02:24:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 220 transitions. [2024-11-28 02:24:45,652 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 220 transitions. Word has length 208 [2024-11-28 02:24:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:45,652 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 220 transitions. [2024-11-28 02:24:45,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 4.428571428571429) internal successors, (527), 119 states have internal predecessors, (527), 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 02:24:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 220 transitions. [2024-11-28 02:24:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 02:24:45,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:45,654 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:45,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 02:24:45,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:45,854 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:45,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2080598890, now seen corresponding path program 36 times [2024-11-28 02:24:45,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:45,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367615648] [2024-11-28 02:24:45,855 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:45,955 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-28 02:24:45,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1598 proven. 1360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367615648] [2024-11-28 02:24:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367615648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:48,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969505876] [2024-11-28 02:24:48,041 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:24:48,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:48,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:48,043 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:48,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 02:24:48,357 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-28 02:24:48,357 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:48,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 02:24:48,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1682 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:50,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 1682 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969505876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:51,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2024-11-28 02:24:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132076883] [2024-11-28 02:24:51,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:51,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-28 02:24:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:51,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-28 02:24:51,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 02:24:51,804 INFO L87 Difference]: Start difference. First operand 217 states and 220 transitions. Second operand has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 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 02:24:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:53,112 INFO L93 Difference]: Finished difference Result 464 states and 528 transitions. [2024-11-28 02:24:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 02:24:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 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 215 [2024-11-28 02:24:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:53,114 INFO L225 Difference]: With dead ends: 464 [2024-11-28 02:24:53,114 INFO L226 Difference]: Without dead ends: 341 [2024-11-28 02:24:53,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 340 SyntacticMatches, 58 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5676 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3849, Invalid=11403, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 02:24:53,115 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 379 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:53,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 735 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:24:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-28 02:24:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 220. [2024-11-28 02:24:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0182648401826484) internal successors, (223), 219 states have internal predecessors, (223), 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 02:24:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 223 transitions. [2024-11-28 02:24:53,132 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 223 transitions. Word has length 215 [2024-11-28 02:24:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:53,133 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 223 transitions. [2024-11-28 02:24:53,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.617021276595745) internal successors, (340), 94 states have internal predecessors, (340), 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 02:24:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 223 transitions. [2024-11-28 02:24:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-28 02:24:53,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:53,134 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:53,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 02:24:53,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 02:24:53,335 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:53,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1710268675, now seen corresponding path program 37 times [2024-11-28 02:24:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345682654] [2024-11-28 02:24:53,335 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1276 proven. 1771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:54,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345682654] [2024-11-28 02:24:54,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345682654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:54,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853778381] [2024-11-28 02:24:54,722 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:24:54,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:54,724 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:54,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 02:24:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:54,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 02:24:55,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1365 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:55,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 1365 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853778381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:56,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:56,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-11-28 02:24:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509755164] [2024-11-28 02:24:56,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:56,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 02:24:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:56,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 02:24:56,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=762, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 02:24:56,309 INFO L87 Difference]: Start difference. First operand 220 states and 223 transitions. Second operand has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 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 02:24:56,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:56,852 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2024-11-28 02:24:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 02:24:56,852 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 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 218 [2024-11-28 02:24:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:56,853 INFO L225 Difference]: With dead ends: 238 [2024-11-28 02:24:56,853 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 02:24:56,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 402 SyntacticMatches, 60 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1686, Invalid=2870, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:24:56,854 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:56,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:24:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 02:24:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 228. [2024-11-28 02:24:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0176211453744493) internal successors, (231), 227 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 02:24:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 231 transitions. [2024-11-28 02:24:56,870 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 231 transitions. Word has length 218 [2024-11-28 02:24:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:56,870 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 231 transitions. [2024-11-28 02:24:56,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.5675675675675675) internal successors, (243), 37 states have internal predecessors, (243), 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 02:24:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 231 transitions. [2024-11-28 02:24:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-28 02:24:56,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:56,871 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:56,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 02:24:57,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:24:57,072 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:57,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash 594469097, now seen corresponding path program 38 times [2024-11-28 02:24:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:57,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672351711] [2024-11-28 02:24:57,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:57,116 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:57,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1832 proven. 1455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:24:59,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672351711] [2024-11-28 02:24:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672351711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416664650] [2024-11-28 02:24:59,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:59,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:59,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:59,152 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:59,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 02:24:59,411 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:59,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:59,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 02:24:59,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1920 proven. 1365 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:25:01,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 1920 proven. 1365 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:25:03,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416664650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:03,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:03,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2024-11-28 02:25:03,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296612934] [2024-11-28 02:25:03,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:03,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-28 02:25:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:03,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-28 02:25:03,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2148, Invalid=7358, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 02:25:03,038 INFO L87 Difference]: Start difference. First operand 228 states and 231 transitions. Second operand has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 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 02:25:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:04,558 INFO L93 Difference]: Finished difference Result 485 states and 551 transitions. [2024-11-28 02:25:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 02:25:04,558 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 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 226 [2024-11-28 02:25:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:04,560 INFO L225 Difference]: With dead ends: 485 [2024-11-28 02:25:04,560 INFO L226 Difference]: Without dead ends: 356 [2024-11-28 02:25:04,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 359 SyntacticMatches, 60 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6175 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4134, Invalid=12378, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 02:25:04,561 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 346 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:04,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 706 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:25:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-28 02:25:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 231. [2024-11-28 02:25:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.017391304347826) internal successors, (234), 230 states have internal predecessors, (234), 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 02:25:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 234 transitions. [2024-11-28 02:25:04,594 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 234 transitions. Word has length 226 [2024-11-28 02:25:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:04,595 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 234 transitions. [2024-11-28 02:25:04,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.663265306122449) internal successors, (359), 98 states have internal predecessors, (359), 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 02:25:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 234 transitions. [2024-11-28 02:25:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 02:25:04,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:04,596 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:04,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 02:25:04,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:04,796 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:04,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash 332030384, now seen corresponding path program 39 times [2024-11-28 02:25:04,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:04,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758198952] [2024-11-28 02:25:04,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:04,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:04,915 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-28 02:25:04,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1832 proven. 1547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:07,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758198952] [2024-11-28 02:25:07,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758198952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835457858] [2024-11-28 02:25:07,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:07,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:07,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:07,313 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:07,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 02:25:07,648 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-28 02:25:07,648 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:07,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 02:25:07,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1922 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:09,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 1922 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835457858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:11,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2024-11-28 02:25:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621073878] [2024-11-28 02:25:11,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:11,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-28 02:25:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:11,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-28 02:25:11,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2024-11-28 02:25:11,502 INFO L87 Difference]: Start difference. First operand 231 states and 234 transitions. Second operand has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 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 02:25:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:13,020 INFO L93 Difference]: Finished difference Result 494 states and 562 transitions. [2024-11-28 02:25:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 02:25:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 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 229 [2024-11-28 02:25:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:13,021 INFO L225 Difference]: With dead ends: 494 [2024-11-28 02:25:13,021 INFO L226 Difference]: Without dead ends: 363 [2024-11-28 02:25:13,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 362 SyntacticMatches, 62 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6440 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4361, Invalid=12931, Unknown=0, NotChecked=0, Total=17292 [2024-11-28 02:25:13,022 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 394 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:13,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 796 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:25:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-28 02:25:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 234. [2024-11-28 02:25:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.0171673819742488) internal successors, (237), 233 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:13,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2024-11-28 02:25:13,042 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 229 [2024-11-28 02:25:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:13,042 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2024-11-28 02:25:13,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 3.62) internal successors, (362), 100 states have internal predecessors, (362), 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 02:25:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2024-11-28 02:25:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-28 02:25:13,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:13,044 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:13,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 02:25:13,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:13,245 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:13,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1139189879, now seen corresponding path program 40 times [2024-11-28 02:25:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:13,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-28 02:25:13,245 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:13,296 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:13,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629511273] [2024-11-28 02:25:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629511273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638802821] [2024-11-28 02:25:14,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:14,578 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:14,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 02:25:14,856 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:14,856 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:14,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 02:25:14,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:15,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1552 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638802821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:16,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2024-11-28 02:25:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687107185] [2024-11-28 02:25:16,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:16,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 02:25:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:16,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 02:25:16,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:25:16,256 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:16,908 INFO L93 Difference]: Finished difference Result 252 states and 256 transitions. [2024-11-28 02:25:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 02:25:16,909 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-11-28 02:25:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:16,910 INFO L225 Difference]: With dead ends: 252 [2024-11-28 02:25:16,910 INFO L226 Difference]: Without dead ends: 250 [2024-11-28 02:25:16,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 430 SyntacticMatches, 63 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1889, Invalid=3081, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 02:25:16,911 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 11 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:16,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 464 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:25:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-28 02:25:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2024-11-28 02:25:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.016597510373444) internal successors, (245), 241 states have internal predecessors, (245), 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 02:25:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 245 transitions. [2024-11-28 02:25:16,930 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 245 transitions. Word has length 232 [2024-11-28 02:25:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:16,930 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 245 transitions. [2024-11-28 02:25:16,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.552631578947368) internal successors, (249), 38 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 245 transitions. [2024-11-28 02:25:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-28 02:25:16,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:16,931 INFO L218 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:16,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 02:25:17,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:17,132 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:17,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 341029231, now seen corresponding path program 41 times [2024-11-28 02:25:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530358065] [2024-11-28 02:25:17,133 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:25:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:17,275 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-11-28 02:25:17,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 2178 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:19,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530358065] [2024-11-28 02:25:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530358065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418553412] [2024-11-28 02:25:19,837 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:25:19,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:19,839 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:19,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 02:25:20,206 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-11-28 02:25:20,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:20,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 02:25:20,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 2178 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:22,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3730 backedges. 2178 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418553412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:24,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 105 [2024-11-28 02:25:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840058263] [2024-11-28 02:25:24,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:24,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 02:25:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:24,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 02:25:24,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2553, Invalid=8367, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 02:25:24,337 INFO L87 Difference]: Start difference. First operand 242 states and 245 transitions. Second operand has 105 states, 105 states have (on average 3.657142857142857) internal successors, (384), 105 states have internal predecessors, (384), 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 02:25:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:27,047 INFO L93 Difference]: Finished difference Result 655 states and 728 transitions. [2024-11-28 02:25:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-28 02:25:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.657142857142857) internal successors, (384), 105 states have internal predecessors, (384), 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 240 [2024-11-28 02:25:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:27,049 INFO L225 Difference]: With dead ends: 655 [2024-11-28 02:25:27,049 INFO L226 Difference]: Without dead ends: 385 [2024-11-28 02:25:27,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 380 SyntacticMatches, 64 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9570 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=7309, Invalid=22103, Unknown=0, NotChecked=0, Total=29412 [2024-11-28 02:25:27,051 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 464 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:27,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 999 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:25:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-28 02:25:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 248. [2024-11-28 02:25:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0161943319838056) internal successors, (251), 247 states have internal predecessors, (251), 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 02:25:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions. [2024-11-28 02:25:27,074 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 240 [2024-11-28 02:25:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:27,074 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions. [2024-11-28 02:25:27,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.657142857142857) internal successors, (384), 105 states have internal predecessors, (384), 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 02:25:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions. [2024-11-28 02:25:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-28 02:25:27,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:27,076 INFO L218 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:27,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 02:25:27,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 02:25:27,277 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:27,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2019946481, now seen corresponding path program 42 times [2024-11-28 02:25:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:27,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209326090] [2024-11-28 02:25:27,277 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:25:27,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:27,392 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-28 02:25:27,392 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3929 backedges. 1650 proven. 2279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209326090] [2024-11-28 02:25:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209326090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318885930] [2024-11-28 02:25:28,818 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:25:28,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:28,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:28,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:28,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 02:25:29,194 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-28 02:25:29,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:29,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 02:25:29,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3929 backedges. 1751 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:29,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3929 backedges. 1751 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:30,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318885930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:30,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:30,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-11-28 02:25:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54589148] [2024-11-28 02:25:30,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:30,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 02:25:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:30,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 02:25:30,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=928, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:25:30,850 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 41 states have internal predecessors, (271), 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 02:25:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:31,530 INFO L93 Difference]: Finished difference Result 266 states and 270 transitions. [2024-11-28 02:25:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-28 02:25:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 41 states have internal predecessors, (271), 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 246 [2024-11-28 02:25:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:31,532 INFO L225 Difference]: With dead ends: 266 [2024-11-28 02:25:31,532 INFO L226 Difference]: Without dead ends: 264 [2024-11-28 02:25:31,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 454 SyntacticMatches, 68 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2112, Invalid=3588, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 02:25:31,533 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 14 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:31,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 477 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:25:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-28 02:25:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2024-11-28 02:25:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.0156862745098039) internal successors, (259), 255 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 02:25:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 259 transitions. [2024-11-28 02:25:31,561 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 259 transitions. Word has length 246 [2024-11-28 02:25:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:31,562 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 259 transitions. [2024-11-28 02:25:31,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.609756097560975) internal successors, (271), 41 states have internal predecessors, (271), 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 02:25:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 259 transitions. [2024-11-28 02:25:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-28 02:25:31,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:31,563 INFO L218 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:31,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 02:25:31,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 02:25:31,764 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:31,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:31,764 INFO L85 PathProgramCache]: Analyzing trace with hash 728663029, now seen corresponding path program 43 times [2024-11-28 02:25:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:31,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834578145] [2024-11-28 02:25:31,764 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 2348 proven. 1853 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:34,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:34,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834578145] [2024-11-28 02:25:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834578145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:34,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695228962] [2024-11-28 02:25:34,439 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:25:34,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:34,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:34,441 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:34,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 02:25:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:34,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 02:25:34,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 2448 proven. 1751 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:25:37,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 2448 proven. 1751 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:25:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695228962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:39,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:39,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 110 [2024-11-28 02:25:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166841017] [2024-11-28 02:25:39,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:39,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-28 02:25:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:39,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-28 02:25:39,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2704, Invalid=9286, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 02:25:39,359 INFO L87 Difference]: Start difference. First operand 256 states and 259 transitions. Second operand has 110 states, 110 states have (on average 3.6636363636363636) internal successors, (403), 110 states have internal predecessors, (403), 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 02:25:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:41,106 INFO L93 Difference]: Finished difference Result 545 states and 619 transitions. [2024-11-28 02:25:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 02:25:41,106 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.6636363636363636) internal successors, (403), 110 states have internal predecessors, (403), 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 254 [2024-11-28 02:25:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:41,108 INFO L225 Difference]: With dead ends: 545 [2024-11-28 02:25:41,108 INFO L226 Difference]: Without dead ends: 400 [2024-11-28 02:25:41,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 403 SyntacticMatches, 68 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7815 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5226, Invalid=15654, Unknown=0, NotChecked=0, Total=20880 [2024-11-28 02:25:41,109 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 448 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:41,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 884 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:25:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-28 02:25:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 259. [2024-11-28 02:25:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0155038759689923) internal successors, (262), 258 states have internal predecessors, (262), 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 02:25:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 262 transitions. [2024-11-28 02:25:41,128 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 262 transitions. Word has length 254 [2024-11-28 02:25:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:41,128 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 262 transitions. [2024-11-28 02:25:41,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.6636363636363636) internal successors, (403), 110 states have internal predecessors, (403), 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 02:25:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 262 transitions. [2024-11-28 02:25:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 02:25:41,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:41,129 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:41,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 02:25:41,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 02:25:41,329 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:41,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1688511548, now seen corresponding path program 44 times [2024-11-28 02:25:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:41,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930045201] [2024-11-28 02:25:41,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:41,383 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:41,383 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 2348 proven. 1957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930045201] [2024-11-28 02:25:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930045201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619261611] [2024-11-28 02:25:44,037 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:25:44,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:44,038 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:44,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 02:25:44,380 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:25:44,380 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:44,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 02:25:44,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 2450 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:47,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 2450 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619261611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:49,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:49,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2024-11-28 02:25:49,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195356179] [2024-11-28 02:25:49,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:49,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-28 02:25:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:49,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-28 02:25:49,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=9617, Unknown=0, NotChecked=0, Total=12432 [2024-11-28 02:25:49,037 INFO L87 Difference]: Start difference. First operand 259 states and 262 transitions. Second operand has 112 states, 112 states have (on average 3.625) internal successors, (406), 112 states have internal predecessors, (406), 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 02:25:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:50,879 INFO L93 Difference]: Finished difference Result 554 states and 630 transitions. [2024-11-28 02:25:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-28 02:25:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 3.625) internal successors, (406), 112 states have internal predecessors, (406), 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 257 [2024-11-28 02:25:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:50,881 INFO L225 Difference]: With dead ends: 554 [2024-11-28 02:25:50,881 INFO L226 Difference]: Without dead ends: 407 [2024-11-28 02:25:50,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 406 SyntacticMatches, 70 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8112 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=5481, Invalid=16275, Unknown=0, NotChecked=0, Total=21756 [2024-11-28 02:25:50,883 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 400 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:50,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 957 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:25:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-28 02:25:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 262. [2024-11-28 02:25:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.0153256704980842) internal successors, (265), 261 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 02:25:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 265 transitions. [2024-11-28 02:25:50,928 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 265 transitions. Word has length 257 [2024-11-28 02:25:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:50,928 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 265 transitions. [2024-11-28 02:25:50,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 3.625) internal successors, (406), 112 states have internal predecessors, (406), 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 02:25:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 265 transitions. [2024-11-28 02:25:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-28 02:25:50,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:50,930 INFO L218 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:50,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 02:25:51,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 02:25:51,131 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:51,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:51,131 INFO L85 PathProgramCache]: Analyzing trace with hash 643484309, now seen corresponding path program 45 times [2024-11-28 02:25:51,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585004032] [2024-11-28 02:25:51,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:51,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-11-28 02:25:51,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4412 backedges. 1855 proven. 2557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:52,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:52,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585004032] [2024-11-28 02:25:52,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585004032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:52,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598171409] [2024-11-28 02:25:52,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:25:52,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:52,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:52,772 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 02:25:53,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-11-28 02:25:53,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:53,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 02:25:53,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4412 backedges. 1962 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:53,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4412 backedges. 1962 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598171409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:25:54,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:25:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-11-28 02:25:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749234891] [2024-11-28 02:25:54,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:25:54,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 02:25:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:54,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 02:25:54,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=1017, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:25:54,901 INFO L87 Difference]: Start difference. First operand 262 states and 265 transitions. Second operand has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 43 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 02:25:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:55,678 INFO L93 Difference]: Finished difference Result 280 states and 284 transitions. [2024-11-28 02:25:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-28 02:25:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 43 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) Word has length 260 [2024-11-28 02:25:55,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:55,681 INFO L225 Difference]: With dead ends: 280 [2024-11-28 02:25:55,681 INFO L226 Difference]: Without dead ends: 278 [2024-11-28 02:25:55,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 480 SyntacticMatches, 72 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2343, Invalid=3977, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 02:25:55,682 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 14 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:55,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 562 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:25:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-28 02:25:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2024-11-28 02:25:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 269 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 273 transitions. [2024-11-28 02:25:55,702 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 273 transitions. Word has length 260 [2024-11-28 02:25:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:55,702 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 273 transitions. [2024-11-28 02:25:55,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.627906976744186) internal successors, (285), 43 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 02:25:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 273 transitions. [2024-11-28 02:25:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 02:25:55,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:55,703 INFO L218 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:55,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-28 02:25:55,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 02:25:55,904 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:55,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1588025467, now seen corresponding path program 46 times [2024-11-28 02:25:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553120128] [2024-11-28 02:25:55,904 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:55,983 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:55,983 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 2630 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:59,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553120128] [2024-11-28 02:25:59,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553120128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836707272] [2024-11-28 02:25:59,027 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:25:59,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:59,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:59,029 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:59,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 02:25:59,362 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:25:59,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:25:59,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 02:25:59,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 2738 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:02,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 2738 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:04,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836707272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:04,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:04,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 119 [2024-11-28 02:26:04,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107823853] [2024-11-28 02:26:04,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:04,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 02:26:04,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:04,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 02:26:04,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3202, Invalid=10840, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 02:26:04,814 INFO L87 Difference]: Start difference. First operand 270 states and 273 transitions. Second operand has 119 states, 119 states have (on average 3.6554621848739495) internal successors, (435), 119 states have internal predecessors, (435), 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 02:26:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:07,745 INFO L93 Difference]: Finished difference Result 731 states and 812 transitions. [2024-11-28 02:26:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-28 02:26:07,745 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.6554621848739495) internal successors, (435), 119 states have internal predecessors, (435), 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 268 [2024-11-28 02:26:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:07,747 INFO L225 Difference]: With dead ends: 731 [2024-11-28 02:26:07,747 INFO L226 Difference]: Without dead ends: 429 [2024-11-28 02:26:07,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 423 SyntacticMatches, 71 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12559 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=9091, Invalid=28351, Unknown=0, NotChecked=0, Total=37442 [2024-11-28 02:26:07,749 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 602 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:07,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1035 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:26:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-28 02:26:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 276. [2024-11-28 02:26:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0145454545454546) internal successors, (279), 275 states have internal predecessors, (279), 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 02:26:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 279 transitions. [2024-11-28 02:26:07,771 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 279 transitions. Word has length 268 [2024-11-28 02:26:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:07,771 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 279 transitions. [2024-11-28 02:26:07,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.6554621848739495) internal successors, (435), 119 states have internal predecessors, (435), 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 02:26:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 279 transitions. [2024-11-28 02:26:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-28 02:26:07,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:07,773 INFO L218 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:07,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:07,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 02:26:07,974 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:07,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash -188512485, now seen corresponding path program 47 times [2024-11-28 02:26:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879577231] [2024-11-28 02:26:07,974 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:26:07,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:08,090 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2024-11-28 02:26:08,090 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4923 backedges. 2185 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879577231] [2024-11-28 02:26:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879577231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079235477] [2024-11-28 02:26:09,972 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:26:09,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:09,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:09,974 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:09,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 02:26:10,465 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2024-11-28 02:26:10,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:10,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-28 02:26:10,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4923 backedges. 2185 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:10,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4923 backedges. 2185 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:12,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079235477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:12,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:12,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 44 [2024-11-28 02:26:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599721792] [2024-11-28 02:26:12,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:12,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 02:26:12,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:12,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 02:26:12,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=866, Invalid=1026, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:26:12,367 INFO L87 Difference]: Start difference. First operand 276 states and 279 transitions. Second operand has 44 states, 44 states have (on average 6.613636363636363) internal successors, (291), 44 states have internal predecessors, (291), 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 02:26:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:13,204 INFO L93 Difference]: Finished difference Result 294 states and 298 transitions. [2024-11-28 02:26:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 02:26:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.613636363636363) internal successors, (291), 44 states have internal predecessors, (291), 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 274 [2024-11-28 02:26:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:13,205 INFO L225 Difference]: With dead ends: 294 [2024-11-28 02:26:13,205 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 02:26:13,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 507 SyntacticMatches, 76 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3116 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2582, Invalid=4224, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 02:26:13,206 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 16 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:13,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 601 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:26:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 02:26:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 284. [2024-11-28 02:26:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0141342756183747) internal successors, (287), 283 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 02:26:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 287 transitions. [2024-11-28 02:26:13,232 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 287 transitions. Word has length 274 [2024-11-28 02:26:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:13,233 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 287 transitions. [2024-11-28 02:26:13,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.613636363636363) internal successors, (291), 44 states have internal predecessors, (291), 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 02:26:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 287 transitions. [2024-11-28 02:26:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-28 02:26:13,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:13,235 INFO L218 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:13,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 02:26:13,436 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:13,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 577122049, now seen corresponding path program 48 times [2024-11-28 02:26:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711519974] [2024-11-28 02:26:13,436 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:26:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:13,548 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-11-28 02:26:13,548 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5227 backedges. 2928 proven. 2299 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:16,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711519974] [2024-11-28 02:26:16,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711519974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:16,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252294877] [2024-11-28 02:26:16,942 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:26:16,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:16,943 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:16,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 02:26:17,388 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-11-28 02:26:17,389 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:17,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 02:26:17,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5227 backedges. 3042 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:20,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5227 backedges. 3042 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252294877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:22,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:22,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2024-11-28 02:26:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72928449] [2024-11-28 02:26:22,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:22,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-11-28 02:26:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:22,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-11-28 02:26:22,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 02:26:22,895 INFO L87 Difference]: Start difference. First operand 284 states and 287 transitions. Second operand has 125 states, 125 states have (on average 3.656) internal successors, (457), 125 states have internal predecessors, (457), 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 02:26:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:26,476 INFO L93 Difference]: Finished difference Result 769 states and 854 transitions. [2024-11-28 02:26:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-28 02:26:26,477 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.656) internal successors, (457), 125 states have internal predecessors, (457), 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 282 [2024-11-28 02:26:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:26,480 INFO L225 Difference]: With dead ends: 769 [2024-11-28 02:26:26,480 INFO L226 Difference]: Without dead ends: 451 [2024-11-28 02:26:26,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 445 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13902 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2024-11-28 02:26:26,484 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 578 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:26,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1262 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:26:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-28 02:26:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 290. [2024-11-28 02:26:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.013840830449827) internal successors, (293), 289 states have internal predecessors, (293), 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 02:26:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 293 transitions. [2024-11-28 02:26:26,510 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 293 transitions. Word has length 282 [2024-11-28 02:26:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:26,510 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 293 transitions. [2024-11-28 02:26:26,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.656) internal successors, (457), 125 states have internal predecessors, (457), 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 02:26:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 293 transitions. [2024-11-28 02:26:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-28 02:26:26,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:26,512 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:26,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 02:26:26,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:26,713 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:26,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1841055137, now seen corresponding path program 49 times [2024-11-28 02:26:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193152080] [2024-11-28 02:26:26,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:26:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5462 backedges. 2301 proven. 3161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193152080] [2024-11-28 02:26:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193152080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861902729] [2024-11-28 02:26:28,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:26:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:28,921 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:28,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 02:26:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:29,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-28 02:26:29,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5462 backedges. 2420 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:29,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5462 backedges. 2420 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861902729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:31,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:31,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-11-28 02:26:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272347618] [2024-11-28 02:26:31,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:31,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 02:26:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:31,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 02:26:31,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=955, Invalid=1207, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:26:31,554 INFO L87 Difference]: Start difference. First operand 290 states and 293 transitions. Second operand has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 47 states have internal predecessors, (313), 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 02:26:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:32,456 INFO L93 Difference]: Finished difference Result 308 states and 312 transitions. [2024-11-28 02:26:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 02:26:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 47 states have internal predecessors, (313), 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 288 [2024-11-28 02:26:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:32,458 INFO L225 Difference]: With dead ends: 308 [2024-11-28 02:26:32,458 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 02:26:32,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 532 SyntacticMatches, 80 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2841, Invalid=4815, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 02:26:32,460 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 14 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:32,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 783 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:26:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 02:26:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 298. [2024-11-28 02:26:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.0134680134680134) internal successors, (301), 297 states have internal predecessors, (301), 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 02:26:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 301 transitions. [2024-11-28 02:26:32,485 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 301 transitions. Word has length 288 [2024-11-28 02:26:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:32,486 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 301 transitions. [2024-11-28 02:26:32,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.659574468085107) internal successors, (313), 47 states have internal predecessors, (313), 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 02:26:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 301 transitions. [2024-11-28 02:26:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-28 02:26:32,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:32,488 INFO L218 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:32,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:32,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:32,691 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:32,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1986852985, now seen corresponding path program 50 times [2024-11-28 02:26:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194158371] [2024-11-28 02:26:32,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:32,771 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:32,771 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 3242 proven. 2540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194158371] [2024-11-28 02:26:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194158371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820755446] [2024-11-28 02:26:36,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:36,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:36,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:36,272 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:36,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 02:26:36,646 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:36,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:36,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 02:26:36,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 3360 proven. 2420 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:26:40,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5782 backedges. 3360 proven. 2420 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:26:43,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820755446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:43,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:43,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 128 [2024-11-28 02:26:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151993567] [2024-11-28 02:26:43,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:43,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-28 02:26:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:43,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-28 02:26:43,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 02:26:43,107 INFO L87 Difference]: Start difference. First operand 298 states and 301 transitions. Second operand has 128 states, 128 states have (on average 3.6640625) internal successors, (469), 128 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 02:26:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:45,482 INFO L93 Difference]: Finished difference Result 635 states and 721 transitions. [2024-11-28 02:26:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-28 02:26:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.6640625) internal successors, (469), 128 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) Word has length 296 [2024-11-28 02:26:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:45,484 INFO L225 Difference]: With dead ends: 635 [2024-11-28 02:26:45,484 INFO L226 Difference]: Without dead ends: 466 [2024-11-28 02:26:45,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 469 SyntacticMatches, 80 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10637 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=7099, Invalid=20957, Unknown=0, NotChecked=0, Total=28056 [2024-11-28 02:26:45,486 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 556 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:45,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1010 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:26:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-28 02:26:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 301. [2024-11-28 02:26:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0133333333333334) internal successors, (304), 300 states have internal predecessors, (304), 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 02:26:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 304 transitions. [2024-11-28 02:26:45,514 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 304 transitions. Word has length 296 [2024-11-28 02:26:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:45,514 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 304 transitions. [2024-11-28 02:26:45,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.6640625) internal successors, (469), 128 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 02:26:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 304 transitions. [2024-11-28 02:26:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-28 02:26:45,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:45,517 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:45,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 02:26:45,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:45,717 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:45,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1572413682, now seen corresponding path program 51 times [2024-11-28 02:26:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:45,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084290720] [2024-11-28 02:26:45,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:45,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 02:26:45,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 3242 proven. 2662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:49,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084290720] [2024-11-28 02:26:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084290720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:49,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959866173] [2024-11-28 02:26:49,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:49,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:49,735 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:49,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 02:26:50,243 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 02:26:50,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:50,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-28 02:26:50,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 3362 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:53,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 3362 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959866173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:56,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 130 [2024-11-28 02:26:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633997821] [2024-11-28 02:26:56,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:56,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-11-28 02:26:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:56,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-11-28 02:26:56,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3787, Invalid=12983, Unknown=0, NotChecked=0, Total=16770 [2024-11-28 02:26:56,442 INFO L87 Difference]: Start difference. First operand 301 states and 304 transitions. Second operand has 130 states, 130 states have (on average 3.6307692307692307) internal successors, (472), 130 states have internal predecessors, (472), 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 02:26:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:58,966 INFO L93 Difference]: Finished difference Result 644 states and 732 transitions. [2024-11-28 02:26:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 02:26:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 3.6307692307692307) internal successors, (472), 130 states have internal predecessors, (472), 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 299 [2024-11-28 02:26:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:58,968 INFO L225 Difference]: With dead ends: 644 [2024-11-28 02:26:58,968 INFO L226 Difference]: Without dead ends: 473 [2024-11-28 02:26:58,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 472 SyntacticMatches, 82 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10980 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=7401, Invalid=22011, Unknown=0, NotChecked=0, Total=29412 [2024-11-28 02:26:58,970 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 523 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:58,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 956 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:26:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-28 02:26:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 304. [2024-11-28 02:26:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 303 states have internal predecessors, (307), 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 02:26:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 307 transitions. [2024-11-28 02:26:59,000 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 307 transitions. Word has length 299 [2024-11-28 02:26:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:59,000 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 307 transitions. [2024-11-28 02:26:59,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 3.6307692307692307) internal successors, (472), 130 states have internal predecessors, (472), 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 02:26:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 307 transitions. [2024-11-28 02:26:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 02:26:59,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:59,003 INFO L218 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:59,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:59,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:59,203 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:59,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1252853287, now seen corresponding path program 52 times [2024-11-28 02:26:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427983688] [2024-11-28 02:26:59,204 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:26:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:59,283 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:26:59,284 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6029 backedges. 2667 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427983688] [2024-11-28 02:27:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427983688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091271975] [2024-11-28 02:27:01,602 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:27:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:01,604 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:01,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 02:27:02,047 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:27:02,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:02,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 02:27:02,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6029 backedges. 2667 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:02,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6029 backedges. 2667 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091271975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:04,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:04,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 48 [2024-11-28 02:27:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696282099] [2024-11-28 02:27:04,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:04,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 02:27:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:04,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 02:27:04,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1040, Invalid=1216, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:27:04,366 INFO L87 Difference]: Start difference. First operand 304 states and 307 transitions. Second operand has 48 states, 48 states have (on average 6.645833333333333) internal successors, (319), 48 states have internal predecessors, (319), 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 02:27:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:05,297 INFO L93 Difference]: Finished difference Result 322 states and 326 transitions. [2024-11-28 02:27:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-28 02:27:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.645833333333333) internal successors, (319), 48 states have internal predecessors, (319), 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 302 [2024-11-28 02:27:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:05,298 INFO L225 Difference]: With dead ends: 322 [2024-11-28 02:27:05,298 INFO L226 Difference]: Without dead ends: 320 [2024-11-28 02:27:05,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 560 SyntacticMatches, 83 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3104, Invalid=5086, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 02:27:05,299 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 16 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:05,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:27:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-28 02:27:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 312. [2024-11-28 02:27:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0128617363344052) internal successors, (315), 311 states have internal predecessors, (315), 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 02:27:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 315 transitions. [2024-11-28 02:27:05,326 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 315 transitions. Word has length 302 [2024-11-28 02:27:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:05,326 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 315 transitions. [2024-11-28 02:27:05,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.645833333333333) internal successors, (319), 48 states have internal predecessors, (319), 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 02:27:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 315 transitions. [2024-11-28 02:27:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-28 02:27:05,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:05,328 INFO L218 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:05,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 02:27:05,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:05,530 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:05,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1704321549, now seen corresponding path program 53 times [2024-11-28 02:27:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:05,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677094786] [2024-11-28 02:27:05,531 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:27:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:05,688 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2024-11-28 02:27:05,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6365 backedges. 3698 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:09,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677094786] [2024-11-28 02:27:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677094786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166574558] [2024-11-28 02:27:09,480 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:27:09,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:09,481 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:09,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 02:27:09,985 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2024-11-28 02:27:09,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:09,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 02:27:09,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6365 backedges. 3698 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:13,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6365 backedges. 3698 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166574558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:16,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 135 [2024-11-28 02:27:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723302615] [2024-11-28 02:27:16,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:16,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2024-11-28 02:27:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:16,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2024-11-28 02:27:16,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4183, Invalid=13907, Unknown=0, NotChecked=0, Total=18090 [2024-11-28 02:27:16,845 INFO L87 Difference]: Start difference. First operand 312 states and 315 transitions. Second operand has 135 states, 135 states have (on average 3.6592592592592594) internal successors, (494), 135 states have internal predecessors, (494), 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 02:27:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:20,924 INFO L93 Difference]: Finished difference Result 845 states and 938 transitions. [2024-11-28 02:27:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-28 02:27:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 3.6592592592592594) internal successors, (494), 135 states have internal predecessors, (494), 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 310 [2024-11-28 02:27:20,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:20,926 INFO L225 Difference]: With dead ends: 845 [2024-11-28 02:27:20,926 INFO L226 Difference]: Without dead ends: 495 [2024-11-28 02:27:20,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 490 SyntacticMatches, 84 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16125 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=12099, Invalid=36963, Unknown=0, NotChecked=0, Total=49062 [2024-11-28 02:27:20,929 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 821 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:20,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1163 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:27:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-28 02:27:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 318. [2024-11-28 02:27:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.0126182965299684) internal successors, (321), 317 states have internal predecessors, (321), 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 02:27:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 321 transitions. [2024-11-28 02:27:20,947 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 321 transitions. Word has length 310 [2024-11-28 02:27:20,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:20,947 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 321 transitions. [2024-11-28 02:27:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 3.6592592592592594) internal successors, (494), 135 states have internal predecessors, (494), 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 02:27:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 321 transitions. [2024-11-28 02:27:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-28 02:27:20,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:20,948 INFO L218 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:20,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-28 02:27:21,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:21,149 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:21,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1552037715, now seen corresponding path program 54 times [2024-11-28 02:27:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914045206] [2024-11-28 02:27:21,149 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:27:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:21,343 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2024-11-28 02:27:21,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6624 backedges. 2795 proven. 3829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914045206] [2024-11-28 02:27:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914045206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580346958] [2024-11-28 02:27:23,734 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:27:23,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:23,736 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:23,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 02:27:24,286 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2024-11-28 02:27:24,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:24,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-28 02:27:24,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6624 backedges. 2926 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:24,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6624 backedges. 2926 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580346958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:26,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-11-28 02:27:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899426889] [2024-11-28 02:27:26,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:26,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 02:27:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:26,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 02:27:26,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=1413, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 02:27:26,610 INFO L87 Difference]: Start difference. First operand 318 states and 321 transitions. Second operand has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 51 states have internal predecessors, (341), 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 02:27:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:27,618 INFO L93 Difference]: Finished difference Result 336 states and 340 transitions. [2024-11-28 02:27:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-28 02:27:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 51 states have internal predecessors, (341), 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 316 [2024-11-28 02:27:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:27,620 INFO L225 Difference]: With dead ends: 336 [2024-11-28 02:27:27,621 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 02:27:27,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 584 SyntacticMatches, 88 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4475 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3387, Invalid=5733, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 02:27:27,622 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 14 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:27,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 672 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:27:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 02:27:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 326. [2024-11-28 02:27:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.0123076923076924) internal successors, (329), 325 states have internal predecessors, (329), 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 02:27:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 329 transitions. [2024-11-28 02:27:27,656 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 329 transitions. Word has length 316 [2024-11-28 02:27:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:27,657 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 329 transitions. [2024-11-28 02:27:27,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.686274509803922) internal successors, (341), 51 states have internal predecessors, (341), 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 02:27:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 329 transitions. [2024-11-28 02:27:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:27:27,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:27,660 INFO L218 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:27,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 02:27:27,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:27,861 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:27,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1716960915, now seen corresponding path program 55 times [2024-11-28 02:27:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557461755] [2024-11-28 02:27:27,861 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:27:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6976 backedges. 3918 proven. 3058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557461755] [2024-11-28 02:27:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557461755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100467523] [2024-11-28 02:27:32,432 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:27:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:32,434 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:32,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 02:27:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:32,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 02:27:32,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6976 backedges. 4048 proven. 2926 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:27:37,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6976 backedges. 4048 proven. 2926 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:27:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100467523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:40,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92, 92] total 140 [2024-11-28 02:27:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216283213] [2024-11-28 02:27:40,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:40,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-28 02:27:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:40,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-28 02:27:40,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4374, Invalid=15086, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 02:27:40,088 INFO L87 Difference]: Start difference. First operand 326 states and 329 transitions. Second operand has 140 states, 140 states have (on average 3.664285714285714) internal successors, (513), 140 states have internal predecessors, (513), 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 02:27:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:42,643 INFO L93 Difference]: Finished difference Result 695 states and 789 transitions. [2024-11-28 02:27:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-28 02:27:42,643 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.664285714285714) internal successors, (513), 140 states have internal predecessors, (513), 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 324 [2024-11-28 02:27:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:42,645 INFO L225 Difference]: With dead ends: 695 [2024-11-28 02:27:42,645 INFO L226 Difference]: Without dead ends: 510 [2024-11-28 02:27:42,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 513 SyntacticMatches, 88 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12755 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=8516, Invalid=25524, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 02:27:42,646 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 745 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:42,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1081 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:27:42,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-28 02:27:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 329. [2024-11-28 02:27:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.0121951219512195) internal successors, (332), 328 states have internal predecessors, (332), 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 02:27:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 332 transitions. [2024-11-28 02:27:42,676 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 332 transitions. Word has length 324 [2024-11-28 02:27:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:42,676 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 332 transitions. [2024-11-28 02:27:42,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.664285714285714) internal successors, (513), 140 states have internal predecessors, (513), 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 02:27:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 332 transitions. [2024-11-28 02:27:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-28 02:27:42,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:42,678 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:42,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 02:27:42,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:42,879 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:42,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 647206298, now seen corresponding path program 56 times [2024-11-28 02:27:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651183516] [2024-11-28 02:27:42,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:27:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:42,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:27:42,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 3918 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:47,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:47,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651183516] [2024-11-28 02:27:47,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651183516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:47,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378558535] [2024-11-28 02:27:47,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:27:47,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:47,215 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:47,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 02:27:47,701 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:27:47,701 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:27:47,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 02:27:47,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 3060 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:51,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:27:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 3060 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:27:57,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378558535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:27:57,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:27:57,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 49, 49] total 141 [2024-11-28 02:27:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092339795] [2024-11-28 02:27:57,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:27:57,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-11-28 02:27:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:57,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-11-28 02:27:57,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3339, Invalid=16401, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 02:27:57,100 INFO L87 Difference]: Start difference. First operand 329 states and 332 transitions. Second operand has 141 states, 141 states have (on average 4.624113475177305) internal successors, (652), 141 states have internal predecessors, (652), 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 02:28:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:05,950 INFO L93 Difference]: Finished difference Result 709 states and 806 transitions. [2024-11-28 02:28:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-28 02:28:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 4.624113475177305) internal successors, (652), 141 states have internal predecessors, (652), 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 327 [2024-11-28 02:28:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:05,953 INFO L225 Difference]: With dead ends: 709 [2024-11-28 02:28:05,953 INFO L226 Difference]: Without dead ends: 522 [2024-11-28 02:28:05,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 561 SyntacticMatches, 92 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57058 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=20947, Invalid=114845, Unknown=0, NotChecked=0, Total=135792 [2024-11-28 02:28:05,962 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 914 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 4519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:05,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 802 Invalid, 4519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:28:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-28 02:28:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 336. [2024-11-28 02:28:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.0119402985074626) internal successors, (339), 335 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 339 transitions. [2024-11-28 02:28:06,001 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 339 transitions. Word has length 327 [2024-11-28 02:28:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:06,002 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 339 transitions. [2024-11-28 02:28:06,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 4.624113475177305) internal successors, (652), 141 states have internal predecessors, (652), 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 02:28:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 339 transitions. [2024-11-28 02:28:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-28 02:28:06,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:06,004 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:06,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 02:28:06,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:06,205 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:06,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1571758618, now seen corresponding path program 57 times [2024-11-28 02:28:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47153312] [2024-11-28 02:28:06,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:28:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:06,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-28 02:28:06,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 4097 proven. 3332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47153312] [2024-11-28 02:28:11,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47153312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898631014] [2024-11-28 02:28:11,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:28:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:11,404 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:11,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 02:28:12,040 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-28 02:28:12,040 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:12,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 02:28:12,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 4232 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:16,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 4232 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898631014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:19,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 145 [2024-11-28 02:28:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326158080] [2024-11-28 02:28:19,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:19,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2024-11-28 02:28:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:19,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2024-11-28 02:28:19,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4707, Invalid=16173, Unknown=0, NotChecked=0, Total=20880 [2024-11-28 02:28:19,767 INFO L87 Difference]: Start difference. First operand 336 states and 339 transitions. Second operand has 145 states, 145 states have (on average 3.6344827586206896) internal successors, (527), 145 states have internal predecessors, (527), 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 02:28:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:22,564 INFO L93 Difference]: Finished difference Result 719 states and 817 transitions. [2024-11-28 02:28:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 02:28:22,564 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 3.6344827586206896) internal successors, (527), 145 states have internal predecessors, (527), 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 334 [2024-11-28 02:28:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:22,566 INFO L225 Difference]: With dead ends: 719 [2024-11-28 02:28:22,566 INFO L226 Difference]: Without dead ends: 528 [2024-11-28 02:28:22,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 527 SyntacticMatches, 92 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13700 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=9221, Invalid=27451, Unknown=0, NotChecked=0, Total=36672 [2024-11-28 02:28:22,568 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 541 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:22,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1287 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:28:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-28 02:28:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 339. [2024-11-28 02:28:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0118343195266273) internal successors, (342), 338 states have internal predecessors, (342), 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 02:28:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 342 transitions. [2024-11-28 02:28:22,589 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 342 transitions. Word has length 334 [2024-11-28 02:28:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:22,589 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 342 transitions. [2024-11-28 02:28:22,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 3.6344827586206896) internal successors, (527), 145 states have internal predecessors, (527), 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 02:28:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 342 transitions. [2024-11-28 02:28:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-28 02:28:22,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:22,591 INFO L218 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:22,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-28 02:28:22,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:22,791 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:22,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1810749485, now seen corresponding path program 58 times [2024-11-28 02:28:22,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:22,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019110994] [2024-11-28 02:28:22,793 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:28:22,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:22,904 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:28:22,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3337 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:26,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019110994] [2024-11-28 02:28:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019110994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794882874] [2024-11-28 02:28:26,305 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:28:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:26,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:26,307 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:26,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 02:28:26,834 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:28:26,834 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:26,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 02:28:26,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3337 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:27,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 3337 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794882874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:29,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 53 [2024-11-28 02:28:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785156005] [2024-11-28 02:28:29,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:29,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 02:28:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:29,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 02:28:29,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=1476, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:28:29,611 INFO L87 Difference]: Start difference. First operand 339 states and 342 transitions. Second operand has 53 states, 53 states have (on average 6.679245283018868) internal successors, (354), 53 states have internal predecessors, (354), 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 02:28:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:30,766 INFO L93 Difference]: Finished difference Result 357 states and 361 transitions. [2024-11-28 02:28:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-28 02:28:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.679245283018868) internal successors, (354), 53 states have internal predecessors, (354), 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 337 [2024-11-28 02:28:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:30,768 INFO L225 Difference]: With dead ends: 357 [2024-11-28 02:28:30,768 INFO L226 Difference]: Without dead ends: 355 [2024-11-28 02:28:30,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 625 SyntacticMatches, 93 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4653 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3824, Invalid=6276, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 02:28:30,769 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 11 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:30,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 797 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:28:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-28 02:28:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 347. [2024-11-28 02:28:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.0115606936416186) internal successors, (350), 346 states have internal predecessors, (350), 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 02:28:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 350 transitions. [2024-11-28 02:28:30,798 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 350 transitions. Word has length 337 [2024-11-28 02:28:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:30,798 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 350 transitions. [2024-11-28 02:28:30,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.679245283018868) internal successors, (354), 53 states have internal predecessors, (354), 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 02:28:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 350 transitions. [2024-11-28 02:28:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-28 02:28:30,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:30,799 INFO L218 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:30,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:31,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:31,000 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:31,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash -478196205, now seen corresponding path program 59 times [2024-11-28 02:28:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113906900] [2024-11-28 02:28:31,001 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:28:31,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:31,243 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-28 02:28:31,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7945 backedges. 4608 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113906900] [2024-11-28 02:28:36,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113906900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123647444] [2024-11-28 02:28:36,605 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:28:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:36,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:36,607 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:36,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 02:28:37,236 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-28 02:28:37,236 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:37,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 02:28:37,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7945 backedges. 4608 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:41,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7945 backedges. 4608 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123647444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:45,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 150 [2024-11-28 02:28:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423903165] [2024-11-28 02:28:45,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:45,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2024-11-28 02:28:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:45,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2024-11-28 02:28:45,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5148, Invalid=17202, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 02:28:45,417 INFO L87 Difference]: Start difference. First operand 347 states and 350 transitions. Second operand has 150 states, 150 states have (on average 3.66) internal successors, (549), 150 states have internal predecessors, (549), 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 02:28:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:50,628 INFO L93 Difference]: Finished difference Result 940 states and 1043 transitions. [2024-11-28 02:28:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-28 02:28:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 3.66) internal successors, (549), 150 states have internal predecessors, (549), 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 345 [2024-11-28 02:28:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:50,630 INFO L225 Difference]: With dead ends: 940 [2024-11-28 02:28:50,630 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 02:28:50,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 545 SyntacticMatches, 94 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20040 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=14944, Invalid=45818, Unknown=0, NotChecked=0, Total=60762 [2024-11-28 02:28:50,633 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 964 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:50,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1325 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:28:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 02:28:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 353. [2024-11-28 02:28:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0113636363636365) internal successors, (356), 352 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 02:28:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 356 transitions. [2024-11-28 02:28:50,653 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 356 transitions. Word has length 345 [2024-11-28 02:28:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:50,653 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 356 transitions. [2024-11-28 02:28:50,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 3.66) internal successors, (549), 150 states have internal predecessors, (549), 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 02:28:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 356 transitions. [2024-11-28 02:28:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-28 02:28:50,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:50,655 INFO L218 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:50,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-28 02:28:50,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:50,856 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:50,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -664738957, now seen corresponding path program 60 times [2024-11-28 02:28:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103714281] [2024-11-28 02:28:50,856 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:28:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:51,021 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2024-11-28 02:28:51,021 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 3480 proven. 4754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103714281] [2024-11-28 02:28:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103714281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695540615] [2024-11-28 02:28:54,134 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:28:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:54,135 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:54,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 02:28:54,778 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2024-11-28 02:28:54,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:54,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-28 02:28:54,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 3626 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:55,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:28:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8234 backedges. 3626 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:28:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695540615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:28:57,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:28:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-11-28 02:28:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218625075] [2024-11-28 02:28:57,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:28:57,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 02:28:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:57,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 02:28:57,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1387, Invalid=1693, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:28:57,480 INFO L87 Difference]: Start difference. First operand 353 states and 356 transitions. Second operand has 56 states, 56 states have (on average 6.714285714285714) internal successors, (376), 56 states have internal predecessors, (376), 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 02:28:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:58,641 INFO L93 Difference]: Finished difference Result 371 states and 375 transitions. [2024-11-28 02:28:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-28 02:28:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 6.714285714285714) internal successors, (376), 56 states have internal predecessors, (376), 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 351 [2024-11-28 02:28:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:58,643 INFO L225 Difference]: With dead ends: 371 [2024-11-28 02:28:58,643 INFO L226 Difference]: Without dead ends: 369 [2024-11-28 02:28:58,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 650 SyntacticMatches, 97 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5426 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4137, Invalid=6993, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 02:28:58,644 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 13 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:58,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 983 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:28:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-28 02:28:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 361. [2024-11-28 02:28:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.011111111111111) internal successors, (364), 360 states have internal predecessors, (364), 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 02:28:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 364 transitions. [2024-11-28 02:28:58,663 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 364 transitions. Word has length 351 [2024-11-28 02:28:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:58,663 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 364 transitions. [2024-11-28 02:28:58,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 6.714285714285714) internal successors, (376), 56 states have internal predecessors, (376), 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 02:28:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 364 transitions. [2024-11-28 02:28:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-28 02:28:58,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:58,665 INFO L218 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:58,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 02:28:58,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:58,865 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:58,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:58,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1469205671, now seen corresponding path program 61 times [2024-11-28 02:28:58,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:58,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571058027] [2024-11-28 02:28:58,866 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:28:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 4853 proven. 3773 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571058027] [2024-11-28 02:29:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571058027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098834432] [2024-11-28 02:29:04,930 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:29:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:04,932 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:04,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 02:29:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:05,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-28 02:29:05,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 4998 proven. 3626 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:10,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8626 backedges. 4998 proven. 3626 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:29:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098834432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:14,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102, 102] total 155 [2024-11-28 02:29:14,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285414562] [2024-11-28 02:29:14,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:14,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2024-11-28 02:29:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:14,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2024-11-28 02:29:14,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5359, Invalid=18511, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 02:29:14,621 INFO L87 Difference]: Start difference. First operand 361 states and 364 transitions. Second operand has 155 states, 155 states have (on average 3.664516129032258) internal successors, (568), 155 states have internal predecessors, (568), 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 02:29:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:17,985 INFO L93 Difference]: Finished difference Result 770 states and 874 transitions. [2024-11-28 02:29:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-28 02:29:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.664516129032258) internal successors, (568), 155 states have internal predecessors, (568), 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 359 [2024-11-28 02:29:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:17,987 INFO L225 Difference]: With dead ends: 770 [2024-11-28 02:29:17,987 INFO L226 Difference]: Without dead ends: 565 [2024-11-28 02:29:17,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 568 SyntacticMatches, 98 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15675 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=10461, Invalid=31359, Unknown=0, NotChecked=0, Total=41820 [2024-11-28 02:29:17,989 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 625 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:17,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1060 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:29:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-28 02:29:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 364. [2024-11-28 02:29:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.0110192837465564) internal successors, (367), 363 states have internal predecessors, (367), 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 02:29:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 367 transitions. [2024-11-28 02:29:18,016 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 367 transitions. Word has length 359 [2024-11-28 02:29:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:18,016 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 367 transitions. [2024-11-28 02:29:18,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.664516129032258) internal successors, (568), 155 states have internal predecessors, (568), 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 02:29:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 367 transitions. [2024-11-28 02:29:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-28 02:29:18,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:18,018 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:18,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-28 02:29:18,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-28 02:29:18,219 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:18,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1690568434, now seen corresponding path program 62 times [2024-11-28 02:29:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:18,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399879716] [2024-11-28 02:29:18,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:29:18,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:18,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:29:18,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 4853 proven. 3922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:24,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:24,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399879716] [2024-11-28 02:29:24,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399879716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:24,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939198469] [2024-11-28 02:29:24,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:29:24,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:24,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:24,018 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:24,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 02:29:24,551 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:29:24,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:24,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-28 02:29:24,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 3775 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:28,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 3775 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939198469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:35,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:29:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 54, 54] total 156 [2024-11-28 02:29:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470210606] [2024-11-28 02:29:35,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:35,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-11-28 02:29:35,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:29:35,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-11-28 02:29:35,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4084, Invalid=20096, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 02:29:35,618 INFO L87 Difference]: Start difference. First operand 364 states and 367 transitions. Second operand has 156 states, 156 states have (on average 4.628205128205129) internal successors, (722), 156 states have internal predecessors, (722), 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 02:29:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:47,052 INFO L93 Difference]: Finished difference Result 784 states and 891 transitions. [2024-11-28 02:29:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2024-11-28 02:29:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 4.628205128205129) internal successors, (722), 156 states have internal predecessors, (722), 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 362 [2024-11-28 02:29:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:47,055 INFO L225 Difference]: With dead ends: 784 [2024-11-28 02:29:47,055 INFO L226 Difference]: Without dead ends: 577 [2024-11-28 02:29:47,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1130 GetRequests, 621 SyntacticMatches, 102 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70398 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=25647, Invalid=141225, Unknown=0, NotChecked=0, Total=166872 [2024-11-28 02:29:47,067 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 1112 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4511 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 4511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:47,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 860 Invalid, 4832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 4511 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:29:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-28 02:29:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 371. [2024-11-28 02:29:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0108108108108107) internal successors, (374), 370 states have internal predecessors, (374), 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 02:29:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 374 transitions. [2024-11-28 02:29:47,103 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 374 transitions. Word has length 362 [2024-11-28 02:29:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:47,103 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 374 transitions. [2024-11-28 02:29:47,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 4.628205128205129) internal successors, (722), 156 states have internal predecessors, (722), 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 02:29:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 374 transitions. [2024-11-28 02:29:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-28 02:29:47,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:47,105 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:47,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:47,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-28 02:29:47,306 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:47,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1146651028, now seen corresponding path program 63 times [2024-11-28 02:29:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310593828] [2024-11-28 02:29:47,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:29:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:47,541 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2024-11-28 02:29:47,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 5052 proven. 4077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:53,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310593828] [2024-11-28 02:29:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310593828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782783459] [2024-11-28 02:29:53,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:29:53,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:53,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:53,636 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:53,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 02:29:54,391 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2024-11-28 02:29:54,392 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:54,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-28 02:29:54,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 5202 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:59,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 5202 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:04,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782783459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:04,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:04,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 160 [2024-11-28 02:30:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742496650] [2024-11-28 02:30:04,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:04,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2024-11-28 02:30:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:04,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2024-11-28 02:30:04,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5727, Invalid=19713, Unknown=0, NotChecked=0, Total=25440 [2024-11-28 02:30:04,264 INFO L87 Difference]: Start difference. First operand 371 states and 374 transitions. Second operand has 160 states, 160 states have (on average 3.6375) internal successors, (582), 160 states have internal predecessors, (582), 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 02:30:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:08,100 INFO L93 Difference]: Finished difference Result 794 states and 902 transitions. [2024-11-28 02:30:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-28 02:30:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 3.6375) internal successors, (582), 160 states have internal predecessors, (582), 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 369 [2024-11-28 02:30:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:08,103 INFO L225 Difference]: With dead ends: 794 [2024-11-28 02:30:08,103 INFO L226 Difference]: Without dead ends: 583 [2024-11-28 02:30:08,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 582 SyntacticMatches, 102 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16720 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=11241, Invalid=33491, Unknown=0, NotChecked=0, Total=44732 [2024-11-28 02:30:08,108 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 712 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:08,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1244 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:30:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-28 02:30:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 374. [2024-11-28 02:30:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.0107238605898123) internal successors, (377), 373 states have internal predecessors, (377), 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 02:30:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 377 transitions. [2024-11-28 02:30:08,142 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 377 transitions. Word has length 369 [2024-11-28 02:30:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:08,142 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 377 transitions. [2024-11-28 02:30:08,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 3.6375) internal successors, (582), 160 states have internal predecessors, (582), 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 02:30:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 377 transitions. [2024-11-28 02:30:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-28 02:30:08,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:08,144 INFO L218 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:08,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 02:30:08,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 02:30:08,345 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:08,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1491015995, now seen corresponding path program 64 times [2024-11-28 02:30:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347495331] [2024-11-28 02:30:08,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:30:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:08,475 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:30:08,475 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9284 backedges. 4082 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347495331] [2024-11-28 02:30:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347495331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535561127] [2024-11-28 02:30:12,244 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:30:12,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:12,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:12,246 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:12,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 02:30:12,819 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:30:12,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:12,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 107 conjuncts are in the unsatisfiable core [2024-11-28 02:30:12,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9284 backedges. 4082 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:13,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9284 backedges. 4082 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535561127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:16,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:16,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 58 [2024-11-28 02:30:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798778438] [2024-11-28 02:30:16,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:16,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 02:30:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:16,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 02:30:16,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1545, Invalid=1761, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 02:30:16,260 INFO L87 Difference]: Start difference. First operand 374 states and 377 transitions. Second operand has 58 states, 58 states have (on average 6.706896551724138) internal successors, (389), 58 states have internal predecessors, (389), 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 02:30:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:17,681 INFO L93 Difference]: Finished difference Result 392 states and 396 transitions. [2024-11-28 02:30:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-28 02:30:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 6.706896551724138) internal successors, (389), 58 states have internal predecessors, (389), 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 372 [2024-11-28 02:30:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:17,683 INFO L225 Difference]: With dead ends: 392 [2024-11-28 02:30:17,683 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 02:30:17,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 689 SyntacticMatches, 104 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5720 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4619, Invalid=7591, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 02:30:17,685 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 11 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:17,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 787 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:30:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 02:30:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 382. [2024-11-28 02:30:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.010498687664042) internal successors, (385), 381 states have internal predecessors, (385), 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 02:30:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 385 transitions. [2024-11-28 02:30:17,711 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 385 transitions. Word has length 372 [2024-11-28 02:30:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:17,712 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 385 transitions. [2024-11-28 02:30:17,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 6.706896551724138) internal successors, (389), 58 states have internal predecessors, (389), 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 02:30:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 385 transitions. [2024-11-28 02:30:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-28 02:30:17,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:17,713 INFO L218 NwaCegarLoop]: trace histogram [54, 53, 53, 53, 53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:17,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 02:30:17,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-28 02:30:17,914 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:17,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash 40256683, now seen corresponding path program 65 times [2024-11-28 02:30:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498239599] [2024-11-28 02:30:17,915 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:30:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:18,151 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2024-11-28 02:30:18,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9700 backedges. 5618 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:24,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498239599] [2024-11-28 02:30:24,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498239599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415058832] [2024-11-28 02:30:24,377 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:30:24,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:24,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:24,379 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:24,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 02:30:25,224 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2024-11-28 02:30:25,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:25,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-28 02:30:25,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9700 backedges. 5618 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:31,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9700 backedges. 5618 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415058832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:35,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109, 109] total 165 [2024-11-28 02:30:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288690706] [2024-11-28 02:30:35,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:35,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2024-11-28 02:30:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:35,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2024-11-28 02:30:35,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6213, Invalid=20847, Unknown=0, NotChecked=0, Total=27060 [2024-11-28 02:30:35,735 INFO L87 Difference]: Start difference. First operand 382 states and 385 transitions. Second operand has 165 states, 165 states have (on average 3.6606060606060606) internal successors, (604), 165 states have internal predecessors, (604), 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 02:30:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:41,642 INFO L93 Difference]: Finished difference Result 1035 states and 1148 transitions. [2024-11-28 02:30:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-11-28 02:30:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 3.6606060606060606) internal successors, (604), 165 states have internal predecessors, (604), 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 380 [2024-11-28 02:30:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:41,644 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 02:30:41,644 INFO L226 Difference]: Without dead ends: 605 [2024-11-28 02:30:41,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 600 SyntacticMatches, 104 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24380 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=18089, Invalid=55623, Unknown=0, NotChecked=0, Total=73712 [2024-11-28 02:30:41,647 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 918 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:41,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1629 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:30:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-28 02:30:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 388. [2024-11-28 02:30:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0103359173126616) internal successors, (391), 387 states have internal predecessors, (391), 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 02:30:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 391 transitions. [2024-11-28 02:30:41,669 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 391 transitions. Word has length 380 [2024-11-28 02:30:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:41,669 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 391 transitions. [2024-11-28 02:30:41,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 3.6606060606060606) internal successors, (604), 165 states have internal predecessors, (604), 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 02:30:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 391 transitions. [2024-11-28 02:30:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-11-28 02:30:41,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:41,671 INFO L218 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:41,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 02:30:41,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 02:30:41,871 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:41,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2104079179, now seen corresponding path program 66 times [2024-11-28 02:30:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660980339] [2024-11-28 02:30:41,872 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:42,029 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2024-11-28 02:30:42,029 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10019 backedges. 4240 proven. 5779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:45,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:45,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660980339] [2024-11-28 02:30:45,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660980339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:45,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922053940] [2024-11-28 02:30:45,931 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:45,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:45,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:45,933 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:45,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 02:30:46,790 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2024-11-28 02:30:46,790 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:46,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 02:30:46,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10019 backedges. 4401 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:47,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10019 backedges. 4401 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:50,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922053940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:50,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:50,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 61 [2024-11-28 02:30:50,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701313495] [2024-11-28 02:30:50,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:50,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 02:30:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:50,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 02:30:50,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1662, Invalid=1998, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 02:30:50,221 INFO L87 Difference]: Start difference. First operand 388 states and 391 transitions. Second operand has 61 states, 61 states have (on average 6.737704918032787) internal successors, (411), 61 states have internal predecessors, (411), 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 02:30:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:51,794 INFO L93 Difference]: Finished difference Result 406 states and 410 transitions. [2024-11-28 02:30:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-28 02:30:51,795 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.737704918032787) internal successors, (411), 61 states have internal predecessors, (411), 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 386 [2024-11-28 02:30:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:51,797 INFO L225 Difference]: With dead ends: 406 [2024-11-28 02:30:51,797 INFO L226 Difference]: Without dead ends: 404 [2024-11-28 02:30:51,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 715 SyntacticMatches, 107 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6521 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4962, Invalid=8378, Unknown=0, NotChecked=0, Total=13340 [2024-11-28 02:30:51,800 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 19 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:51,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 869 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:30:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-28 02:30:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2024-11-28 02:30:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.010126582278481) internal successors, (399), 395 states have internal predecessors, (399), 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 02:30:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 399 transitions. [2024-11-28 02:30:51,848 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 399 transitions. Word has length 386 [2024-11-28 02:30:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:51,849 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 399 transitions. [2024-11-28 02:30:51,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.737704918032787) internal successors, (411), 61 states have internal predecessors, (411), 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 02:30:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 399 transitions. [2024-11-28 02:30:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-28 02:30:51,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:51,852 INFO L218 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:51,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:52,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 02:30:52,052 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:52,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 888482609, now seen corresponding path program 67 times [2024-11-28 02:30:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83173724] [2024-11-28 02:30:52,053 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10451 backedges. 5888 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83173724] [2024-11-28 02:30:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83173724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298308124] [2024-11-28 02:30:59,405 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:59,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:59,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:59,406 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:59,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 02:30:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:00,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 02:31:00,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10451 backedges. 6048 proven. 4401 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:31:06,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10451 backedges. 6048 proven. 4401 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:31:11,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298308124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:11,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112, 112] total 170 [2024-11-28 02:31:11,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225729155] [2024-11-28 02:31:11,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:11,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2024-11-28 02:31:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:11,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2024-11-28 02:31:11,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6444, Invalid=22286, Unknown=0, NotChecked=0, Total=28730 [2024-11-28 02:31:11,238 INFO L87 Difference]: Start difference. First operand 396 states and 399 transitions. Second operand has 170 states, 170 states have (on average 3.664705882352941) internal successors, (623), 170 states have internal predecessors, (623), 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 02:31:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:15,716 INFO L93 Difference]: Finished difference Result 845 states and 959 transitions. [2024-11-28 02:31:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 02:31:15,716 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 3.664705882352941) internal successors, (623), 170 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2024-11-28 02:31:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:15,719 INFO L225 Difference]: With dead ends: 845 [2024-11-28 02:31:15,719 INFO L226 Difference]: Without dead ends: 620 [2024-11-28 02:31:15,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 623 SyntacticMatches, 108 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18895 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=12606, Invalid=37794, Unknown=0, NotChecked=0, Total=50400 [2024-11-28 02:31:15,722 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 790 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:15,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1430 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:31:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-28 02:31:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 399. [2024-11-28 02:31:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.0100502512562815) internal successors, (402), 398 states have internal predecessors, (402), 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 02:31:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 402 transitions. [2024-11-28 02:31:15,752 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 402 transitions. Word has length 394 [2024-11-28 02:31:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:15,752 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 402 transitions. [2024-11-28 02:31:15,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 3.664705882352941) internal successors, (623), 170 states have internal predecessors, (623), 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 02:31:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 402 transitions. [2024-11-28 02:31:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 02:31:15,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:15,754 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:15,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:15,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 02:31:15,954 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:15,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash -504452872, now seen corresponding path program 68 times [2024-11-28 02:31:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610914118] [2024-11-28 02:31:15,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:16,099 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:16,099 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 5888 proven. 4727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:23,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610914118] [2024-11-28 02:31:23,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610914118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614431084] [2024-11-28 02:31:23,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:23,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:23,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:23,895 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:23,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 02:31:24,627 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:24,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:24,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 02:31:24,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 4565 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:29,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 4565 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614431084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:38,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 59, 59] total 171 [2024-11-28 02:31:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917554938] [2024-11-28 02:31:38,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:38,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2024-11-28 02:31:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:38,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2024-11-28 02:31:38,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4904, Invalid=24166, Unknown=0, NotChecked=0, Total=29070 [2024-11-28 02:31:38,748 INFO L87 Difference]: Start difference. First operand 399 states and 402 transitions. Second operand has 171 states, 171 states have (on average 4.631578947368421) internal successors, (792), 171 states have internal predecessors, (792), 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 02:31:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:52,017 INFO L93 Difference]: Finished difference Result 859 states and 976 transitions. [2024-11-28 02:31:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 336 states. [2024-11-28 02:31:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 4.631578947368421) internal successors, (792), 171 states have internal predecessors, (792), 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 397 [2024-11-28 02:31:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:52,021 INFO L225 Difference]: With dead ends: 859 [2024-11-28 02:31:52,021 INFO L226 Difference]: Without dead ends: 632 [2024-11-28 02:31:52,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 681 SyntacticMatches, 112 SemanticMatches, 447 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85138 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=30822, Invalid=170330, Unknown=0, NotChecked=0, Total=201152 [2024-11-28 02:31:52,042 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 1718 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 4884 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 4884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:52,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1029 Invalid, 5406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 4884 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:31:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-28 02:31:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 406. [2024-11-28 02:31:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.0098765432098766) internal successors, (409), 405 states have internal predecessors, (409), 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 02:31:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 409 transitions. [2024-11-28 02:31:52,096 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 409 transitions. Word has length 397 [2024-11-28 02:31:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:52,096 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 409 transitions. [2024-11-28 02:31:52,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 4.631578947368421) internal successors, (792), 171 states have internal predecessors, (792), 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 02:31:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 409 transitions. [2024-11-28 02:31:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-28 02:31:52,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:52,099 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:52,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-28 02:31:52,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:52,300 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:52,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1126870140, now seen corresponding path program 69 times [2024-11-28 02:31:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:52,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400135777] [2024-11-28 02:31:52,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:52,537 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2024-11-28 02:31:52,537 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 6107 proven. 4897 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400135777] [2024-11-28 02:32:00,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400135777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:00,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061661246] [2024-11-28 02:32:00,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:32:00,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:00,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:00,416 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:00,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-28 02:32:01,371 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2024-11-28 02:32:01,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:01,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 02:32:01,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 6272 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:08,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 6272 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:13,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061661246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:13,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:13,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116, 116] total 175 [2024-11-28 02:32:13,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767439102] [2024-11-28 02:32:13,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:13,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-28 02:32:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:13,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-28 02:32:13,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6848, Invalid=23602, Unknown=0, NotChecked=0, Total=30450 [2024-11-28 02:32:13,022 INFO L87 Difference]: Start difference. First operand 406 states and 409 transitions. Second operand has 175 states, 175 states have (on average 3.64) internal successors, (637), 175 states have internal predecessors, (637), 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 02:32:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:32:17,698 INFO L93 Difference]: Finished difference Result 869 states and 987 transitions. [2024-11-28 02:32:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-28 02:32:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 3.64) internal successors, (637), 175 states have internal predecessors, (637), 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 404 [2024-11-28 02:32:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:32:17,702 INFO L225 Difference]: With dead ends: 869 [2024-11-28 02:32:17,702 INFO L226 Difference]: Without dead ends: 638 [2024-11-28 02:32:17,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 637 SyntacticMatches, 112 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20042 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=13456, Invalid=39674, Unknown=0, NotChecked=0, Total=53130 [2024-11-28 02:32:17,705 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 934 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:32:17,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1631 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:32:17,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-28 02:32:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 409. [2024-11-28 02:32:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.0098039215686274) internal successors, (412), 408 states have internal predecessors, (412), 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 02:32:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 412 transitions. [2024-11-28 02:32:17,741 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 412 transitions. Word has length 404 [2024-11-28 02:32:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:32:17,742 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 412 transitions. [2024-11-28 02:32:17,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 3.64) internal successors, (637), 175 states have internal predecessors, (637), 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 02:32:17,742 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 412 transitions. [2024-11-28 02:32:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-28 02:32:17,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:32:17,743 INFO L218 NwaCegarLoop]: trace histogram [58, 57, 57, 57, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:17,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-28 02:32:17,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-28 02:32:17,944 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:32:17,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1348631413, now seen corresponding path program 70 times [2024-11-28 02:32:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:17,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114320014] [2024-11-28 02:32:17,945 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:32:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:18,093 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:32:18,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11174 backedges. 4902 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114320014] [2024-11-28 02:32:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114320014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955039780] [2024-11-28 02:32:23,390 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:32:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:23,392 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:23,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-28 02:32:24,182 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:32:24,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:24,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 02:32:24,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11174 backedges. 4902 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:24,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11174 backedges. 4902 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:28,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955039780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:28,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:28,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 63 [2024-11-28 02:32:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371518061] [2024-11-28 02:32:28,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:28,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 02:32:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:28,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 02:32:28,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1835, Invalid=2071, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:32:28,447 INFO L87 Difference]: Start difference. First operand 409 states and 412 transitions. Second operand has 63 states, 63 states have (on average 6.73015873015873) internal successors, (424), 63 states have internal predecessors, (424), 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 02:32:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:32:30,133 INFO L93 Difference]: Finished difference Result 427 states and 431 transitions. [2024-11-28 02:32:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-28 02:32:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.73015873015873) internal successors, (424), 63 states have internal predecessors, (424), 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 407 [2024-11-28 02:32:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:32:30,136 INFO L225 Difference]: With dead ends: 427 [2024-11-28 02:32:30,136 INFO L226 Difference]: Without dead ends: 425 [2024-11-28 02:32:30,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 754 SyntacticMatches, 114 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6840 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5489, Invalid=9031, Unknown=0, NotChecked=0, Total=14520 [2024-11-28 02:32:30,137 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 16 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:32:30,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 757 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:32:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-28 02:32:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 417. [2024-11-28 02:32:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.0096153846153846) internal successors, (420), 416 states have internal predecessors, (420), 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 02:32:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 420 transitions. [2024-11-28 02:32:30,169 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 420 transitions. Word has length 407 [2024-11-28 02:32:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:32:30,169 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 420 transitions. [2024-11-28 02:32:30,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.73015873015873) internal successors, (424), 63 states have internal predecessors, (424), 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 02:32:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 420 transitions. [2024-11-28 02:32:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-28 02:32:30,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:32:30,171 INFO L218 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:30,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-28 02:32:30,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-28 02:32:30,372 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:32:30,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:30,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1944304753, now seen corresponding path program 71 times [2024-11-28 02:32:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:30,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982249548] [2024-11-28 02:32:30,372 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:32:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:30,639 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 59 check-sat command(s) [2024-11-28 02:32:30,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11630 backedges. 6728 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:39,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:39,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982249548] [2024-11-28 02:32:39,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982249548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:39,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035039445] [2024-11-28 02:32:39,027 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:32:39,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:39,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:39,029 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-28 02:32:40,008 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 59 check-sat command(s) [2024-11-28 02:32:40,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:40,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 02:32:40,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11630 backedges. 6728 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:46,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11630 backedges. 6728 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035039445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:51,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119, 119] total 180 [2024-11-28 02:32:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98479591] [2024-11-28 02:32:51,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:51,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2024-11-28 02:32:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:51,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2024-11-28 02:32:51,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7378, Invalid=24842, Unknown=0, NotChecked=0, Total=32220 [2024-11-28 02:32:51,441 INFO L87 Difference]: Start difference. First operand 417 states and 420 transitions. Second operand has 180 states, 180 states have (on average 3.661111111111111) internal successors, (659), 180 states have internal predecessors, (659), 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 02:32:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:32:59,787 INFO L93 Difference]: Finished difference Result 1130 states and 1253 transitions. [2024-11-28 02:32:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-11-28 02:32:59,787 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 3.661111111111111) internal successors, (659), 180 states have internal predecessors, (659), 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 415 [2024-11-28 02:32:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:32:59,789 INFO L225 Difference]: With dead ends: 1130 [2024-11-28 02:32:59,789 INFO L226 Difference]: Without dead ends: 660 [2024-11-28 02:32:59,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 655 SyntacticMatches, 114 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29145 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=21534, Invalid=66378, Unknown=0, NotChecked=0, Total=87912 [2024-11-28 02:32:59,793 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1243 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:32:59,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1642 Invalid, 2253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:32:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-28 02:32:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 423. [2024-11-28 02:32:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.009478672985782) internal successors, (426), 422 states have internal predecessors, (426), 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 02:32:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 426 transitions. [2024-11-28 02:32:59,828 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 426 transitions. Word has length 415 [2024-11-28 02:32:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:32:59,829 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 426 transitions. [2024-11-28 02:32:59,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 3.661111111111111) internal successors, (659), 180 states have internal predecessors, (659), 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 02:32:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 426 transitions. [2024-11-28 02:32:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-28 02:32:59,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:32:59,832 INFO L218 NwaCegarLoop]: trace histogram [60, 59, 59, 59, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:59,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:00,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:00,033 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:00,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1816344111, now seen corresponding path program 72 times [2024-11-28 02:33:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75367830] [2024-11-28 02:33:00,034 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:33:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:00,424 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 60 check-sat command(s) [2024-11-28 02:33:00,425 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11979 backedges. 5075 proven. 6904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:05,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:05,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75367830] [2024-11-28 02:33:05,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75367830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:05,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759270268] [2024-11-28 02:33:05,830 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:33:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:05,832 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:05,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-28 02:33:06,813 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 60 check-sat command(s) [2024-11-28 02:33:06,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:06,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-28 02:33:06,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11979 backedges. 5251 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:07,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11979 backedges. 5251 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759270268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:10,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 66 [2024-11-28 02:33:10,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244918947] [2024-11-28 02:33:10,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:10,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 02:33:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:10,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 02:33:10,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1962, Invalid=2328, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 02:33:10,698 INFO L87 Difference]: Start difference. First operand 423 states and 426 transitions. Second operand has 66 states, 66 states have (on average 6.757575757575758) internal successors, (446), 66 states have internal predecessors, (446), 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 02:33:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:12,360 INFO L93 Difference]: Finished difference Result 441 states and 445 transitions. [2024-11-28 02:33:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-28 02:33:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.757575757575758) internal successors, (446), 66 states have internal predecessors, (446), 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 421 [2024-11-28 02:33:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:12,362 INFO L225 Difference]: With dead ends: 441 [2024-11-28 02:33:12,362 INFO L226 Difference]: Without dead ends: 439 [2024-11-28 02:33:12,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 779 SyntacticMatches, 118 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7775 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5862, Invalid=9888, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 02:33:12,364 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 11 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:12,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 866 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:33:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-28 02:33:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 431. [2024-11-28 02:33:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.0093023255813953) internal successors, (434), 430 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 02:33:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 434 transitions. [2024-11-28 02:33:12,392 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 434 transitions. Word has length 421 [2024-11-28 02:33:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:12,392 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 434 transitions. [2024-11-28 02:33:12,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.757575757575758) internal successors, (446), 66 states have internal predecessors, (446), 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 02:33:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 434 transitions. [2024-11-28 02:33:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-28 02:33:12,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:12,394 INFO L218 NwaCegarLoop]: trace histogram [61, 60, 60, 60, 60, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:12,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-28 02:33:12,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:12,595 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:12,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash -979084361, now seen corresponding path program 73 times [2024-11-28 02:33:12,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:12,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903791769] [2024-11-28 02:33:12,595 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:33:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12451 backedges. 7023 proven. 5428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903791769] [2024-11-28 02:33:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903791769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696007723] [2024-11-28 02:33:20,362 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:33:20,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:20,363 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:20,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-28 02:33:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:21,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-28 02:33:21,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12451 backedges. 7198 proven. 5251 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:33:28,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12451 backedges. 7198 proven. 5251 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:33:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696007723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:33,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:33,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 122, 122] total 185 [2024-11-28 02:33:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272219365] [2024-11-28 02:33:33,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:33,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2024-11-28 02:33:33,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:33,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2024-11-28 02:33:33,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7629, Invalid=26411, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 02:33:33,458 INFO L87 Difference]: Start difference. First operand 431 states and 434 transitions. Second operand has 185 states, 185 states have (on average 3.6648648648648647) internal successors, (678), 185 states have internal predecessors, (678), 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 02:33:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:38,029 INFO L93 Difference]: Finished difference Result 920 states and 1044 transitions. [2024-11-28 02:33:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-28 02:33:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.6648648648648647) internal successors, (678), 185 states have internal predecessors, (678), 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 429 [2024-11-28 02:33:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:38,031 INFO L225 Difference]: With dead ends: 920 [2024-11-28 02:33:38,031 INFO L226 Difference]: Without dead ends: 675 [2024-11-28 02:33:38,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 678 SyntacticMatches, 118 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22415 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=14951, Invalid=44829, Unknown=0, NotChecked=0, Total=59780 [2024-11-28 02:33:38,034 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 679 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:38,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1521 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:33:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-28 02:33:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 434. [2024-11-28 02:33:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.0092378752886837) internal successors, (437), 433 states have internal predecessors, (437), 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 02:33:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 437 transitions. [2024-11-28 02:33:38,062 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 437 transitions. Word has length 429 [2024-11-28 02:33:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:38,062 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 437 transitions. [2024-11-28 02:33:38,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.6648648648648647) internal successors, (678), 185 states have internal predecessors, (678), 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 02:33:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 437 transitions. [2024-11-28 02:33:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-28 02:33:38,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:38,063 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:38,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-28 02:33:38,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:38,264 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:38,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1447653232, now seen corresponding path program 74 times [2024-11-28 02:33:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:38,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418481311] [2024-11-28 02:33:38,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:33:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:38,425 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:33:38,425 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 7023 proven. 5607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418481311] [2024-11-28 02:33:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418481311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284258231] [2024-11-28 02:33:46,899 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:33:46,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:46,901 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:46,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-28 02:33:47,643 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:33:47,643 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:47,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-28 02:33:47,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 7200 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:54,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 7200 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:00,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284258231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:34:00,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:34:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124, 124] total 187 [2024-11-28 02:34:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454209078] [2024-11-28 02:34:00,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:34:00,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 187 states [2024-11-28 02:34:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:00,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2024-11-28 02:34:00,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7815, Invalid=26967, Unknown=0, NotChecked=0, Total=34782 [2024-11-28 02:34:00,515 INFO L87 Difference]: Start difference. First operand 434 states and 437 transitions. Second operand has 187 states, 187 states have (on average 3.641711229946524) internal successors, (681), 187 states have internal predecessors, (681), 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 02:34:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:05,578 INFO L93 Difference]: Finished difference Result 929 states and 1055 transitions. [2024-11-28 02:34:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-28 02:34:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 187 states, 187 states have (on average 3.641711229946524) internal successors, (681), 187 states have internal predecessors, (681), 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 432 [2024-11-28 02:34:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:05,580 INFO L225 Difference]: With dead ends: 929 [2024-11-28 02:34:05,581 INFO L226 Difference]: Without dead ends: 682 [2024-11-28 02:34:05,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 681 SyntacticMatches, 120 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22912 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=15381, Invalid=45875, Unknown=0, NotChecked=0, Total=61256 [2024-11-28 02:34:05,584 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 874 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:34:05,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1519 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:34:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-28 02:34:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 437. [2024-11-28 02:34:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.0091743119266054) internal successors, (440), 436 states have internal predecessors, (440), 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 02:34:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 440 transitions. [2024-11-28 02:34:05,618 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 440 transitions. Word has length 432 [2024-11-28 02:34:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:05,618 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 440 transitions. [2024-11-28 02:34:05,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 187 states, 187 states have (on average 3.641711229946524) internal successors, (681), 187 states have internal predecessors, (681), 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 02:34:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 440 transitions. [2024-11-28 02:34:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-28 02:34:05,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:05,620 INFO L218 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:05,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-28 02:34:05,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:05,820 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:05,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1939177193, now seen corresponding path program 75 times [2024-11-28 02:34:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703834274] [2024-11-28 02:34:05,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:34:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:06,091 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2024-11-28 02:34:06,091 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12812 backedges. 5430 proven. 7382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703834274] [2024-11-28 02:34:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703834274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106778007] [2024-11-28 02:34:11,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:34:11,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:11,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:11,027 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:11,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-28 02:34:11,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2024-11-28 02:34:11,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:11,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-28 02:34:11,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:34:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12812 backedges. 5612 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:12,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12812 backedges. 5612 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106778007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:34:15,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:34:15,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 68 [2024-11-28 02:34:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343435379] [2024-11-28 02:34:15,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:34:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 02:34:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:15,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 02:34:15,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2089, Invalid=2467, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:34:15,838 INFO L87 Difference]: Start difference. First operand 437 states and 440 transitions. Second operand has 68 states, 68 states have (on average 6.764705882352941) internal successors, (460), 68 states have internal predecessors, (460), 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 02:34:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:17,564 INFO L93 Difference]: Finished difference Result 455 states and 459 transitions. [2024-11-28 02:34:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-28 02:34:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.764705882352941) internal successors, (460), 68 states have internal predecessors, (460), 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 435 [2024-11-28 02:34:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:17,567 INFO L225 Difference]: With dead ends: 455 [2024-11-28 02:34:17,567 INFO L226 Difference]: Without dead ends: 453 [2024-11-28 02:34:17,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 805 SyntacticMatches, 122 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8283 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6243, Invalid=10527, Unknown=0, NotChecked=0, Total=16770 [2024-11-28 02:34:17,568 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 11 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:34:17,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1090 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:34:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-28 02:34:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2024-11-28 02:34:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.009009009009009) internal successors, (448), 444 states have internal predecessors, (448), 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 02:34:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 448 transitions. [2024-11-28 02:34:17,596 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 448 transitions. Word has length 435 [2024-11-28 02:34:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:17,596 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 448 transitions. [2024-11-28 02:34:17,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.764705882352941) internal successors, (460), 68 states have internal predecessors, (460), 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 02:34:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 448 transitions. [2024-11-28 02:34:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-28 02:34:17,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:17,598 INFO L218 NwaCegarLoop]: trace histogram [63, 62, 62, 62, 62, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:17,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-28 02:34:17,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:17,799 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:17,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash 929131773, now seen corresponding path program 76 times [2024-11-28 02:34:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:17,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875510990] [2024-11-28 02:34:17,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:34:17,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:17,938 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:34:17,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13300 backedges. 7688 proven. 5612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:25,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:25,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875510990] [2024-11-28 02:34:25,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875510990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:25,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789447366] [2024-11-28 02:34:25,533 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:34:25,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:25,535 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:25,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-28 02:34:26,220 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:34:26,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:26,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 02:34:26,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:34:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13300 backedges. 7686 proven. 5612 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:34:33,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13300 backedges. 7686 proven. 5612 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:34:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789447366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:34:39,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:34:39,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 126, 126] total 189 [2024-11-28 02:34:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830633938] [2024-11-28 02:34:39,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:34:39,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2024-11-28 02:34:39,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:39,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2024-11-28 02:34:39,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8063, Invalid=27469, Unknown=0, NotChecked=0, Total=35532 [2024-11-28 02:34:39,226 INFO L87 Difference]: Start difference. First operand 445 states and 448 transitions. Second operand has 189 states, 189 states have (on average 3.6613756613756614) internal successors, (692), 189 states have internal predecessors, (692), 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 02:34:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:43,930 INFO L93 Difference]: Finished difference Result 950 states and 1078 transitions. [2024-11-28 02:34:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-28 02:34:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 3.6613756613756614) internal successors, (692), 189 states have internal predecessors, (692), 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 443 [2024-11-28 02:34:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:43,932 INFO L225 Difference]: With dead ends: 950 [2024-11-28 02:34:43,932 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 02:34:43,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 701 SyntacticMatches, 123 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22814 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=15937, Invalid=46813, Unknown=0, NotChecked=0, Total=62750 [2024-11-28 02:34:43,934 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 739 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:34:43,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1562 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:34:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 02:34:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 448. [2024-11-28 02:34:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.0089485458612975) internal successors, (451), 447 states have internal predecessors, (451), 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 02:34:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 451 transitions. [2024-11-28 02:34:43,963 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 451 transitions. Word has length 443 [2024-11-28 02:34:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:43,963 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 451 transitions. [2024-11-28 02:34:43,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 3.6613756613756614) internal successors, (692), 189 states have internal predecessors, (692), 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 02:34:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 451 transitions. [2024-11-28 02:34:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-28 02:34:43,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:43,965 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:43,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-28 02:34:44,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:44,165 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:44,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1350939158, now seen corresponding path program 77 times [2024-11-28 02:34:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087512177] [2024-11-28 02:34:44,166 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:34:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:44,422 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-28 02:34:44,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 5797 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:49,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087512177] [2024-11-28 02:34:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087512177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:49,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318428622] [2024-11-28 02:34:49,459 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:34:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:49,463 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:49,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-28 02:34:50,395 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-28 02:34:50,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:50,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-28 02:34:50,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:35:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 7688 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:35:00,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:35:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 7688 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:35:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318428622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:35:11,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:35:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 128, 128] total 255 [2024-11-28 02:35:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793185396] [2024-11-28 02:35:11,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:35:11,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 255 states [2024-11-28 02:35:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:35:11,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2024-11-28 02:35:11,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10335, Invalid=54435, Unknown=0, NotChecked=0, Total=64770 [2024-11-28 02:35:11,119 INFO L87 Difference]: Start difference. First operand 448 states and 451 transitions. Second operand has 255 states, 255 states have (on average 4.466666666666667) internal successors, (1139), 255 states have internal predecessors, (1139), 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 02:35:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:35:34,707 INFO L93 Difference]: Finished difference Result 964 states and 1095 transitions. [2024-11-28 02:35:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2024-11-28 02:35:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 255 states, 255 states have (on average 4.466666666666667) internal successors, (1139), 255 states have internal predecessors, (1139), 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 446 [2024-11-28 02:35:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:35:34,710 INFO L225 Difference]: With dead ends: 964 [2024-11-28 02:35:34,710 INFO L226 Difference]: Without dead ends: 709 [2024-11-28 02:35:34,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 765 SyntacticMatches, 63 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108318 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=47116, Invalid=274940, Unknown=0, NotChecked=0, Total=322056 [2024-11-28 02:35:34,722 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 1556 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 6781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:35:34,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1292 Invalid, 6781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 6324 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 02:35:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-28 02:35:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 455. [2024-11-28 02:35:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.0088105726872247) internal successors, (458), 454 states have internal predecessors, (458), 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 02:35:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 458 transitions. [2024-11-28 02:35:34,758 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 458 transitions. Word has length 446 [2024-11-28 02:35:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:35:34,758 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 458 transitions. [2024-11-28 02:35:34,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 255 states, 255 states have (on average 4.466666666666667) internal successors, (1139), 255 states have internal predecessors, (1139), 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 02:35:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 458 transitions. [2024-11-28 02:35:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-28 02:35:34,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:35:34,760 INFO L218 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:35:34,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-11-28 02:35:34,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-28 02:35:34,961 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:35:34,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:35:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1224627728, now seen corresponding path program 78 times [2024-11-28 02:35:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:35:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858617840] [2024-11-28 02:35:34,961 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:35:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:35:35,241 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-11-28 02:35:35,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:35:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 7752 proven. 6171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:35:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:35:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858617840] [2024-11-28 02:35:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858617840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:35:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750522375] [2024-11-28 02:35:44,675 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:35:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:35:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:35:44,677 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:35:44,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-28 02:35:45,626 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-11-28 02:35:45,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:35:45,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-28 02:35:45,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:35:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 7938 proven. 5985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:35:53,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:35:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 7938 proven. 5985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:35:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750522375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:35:59,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:35:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 196 [2024-11-28 02:35:59,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940357810] [2024-11-28 02:35:59,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:35:59,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-11-28 02:35:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:35:59,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-11-28 02:35:59,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8583, Invalid=29637, Unknown=0, NotChecked=0, Total=38220 [2024-11-28 02:35:59,210 INFO L87 Difference]: Start difference. First operand 455 states and 458 transitions. Second operand has 196 states, 196 states have (on average 3.642857142857143) internal successors, (714), 196 states have internal predecessors, (714), 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 02:36:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:36:05,456 INFO L93 Difference]: Finished difference Result 974 states and 1106 transitions. [2024-11-28 02:36:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-28 02:36:05,457 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 3.642857142857143) internal successors, (714), 196 states have internal predecessors, (714), 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 453 [2024-11-28 02:36:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:36:05,459 INFO L225 Difference]: With dead ends: 974 [2024-11-28 02:36:05,459 INFO L226 Difference]: Without dead ends: 715 [2024-11-28 02:36:05,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 714 SyntacticMatches, 126 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25192 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=16905, Invalid=50435, Unknown=0, NotChecked=0, Total=67340 [2024-11-28 02:36:05,462 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 1051 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:36:05,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1858 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:36:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-28 02:36:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 458. [2024-11-28 02:36:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.0087527352297594) internal successors, (461), 457 states have internal predecessors, (461), 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 02:36:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 461 transitions. [2024-11-28 02:36:05,502 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 461 transitions. Word has length 453 [2024-11-28 02:36:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:36:05,502 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 461 transitions. [2024-11-28 02:36:05,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 3.642857142857143) internal successors, (714), 196 states have internal predecessors, (714), 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 02:36:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 461 transitions. [2024-11-28 02:36:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-28 02:36:05,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:36:05,504 INFO L218 NwaCegarLoop]: trace histogram [65, 64, 64, 64, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:36:05,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-28 02:36:05,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:36:05,705 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:36:05,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1940246505, now seen corresponding path program 79 times [2024-11-28 02:36:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:05,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358179692] [2024-11-28 02:36:05,706 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:36:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:36:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14114 backedges. 5985 proven. 8129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:11,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:36:11,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358179692] [2024-11-28 02:36:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358179692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:36:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509036172] [2024-11-28 02:36:11,779 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:36:11,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:36:11,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:36:11,781 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:36:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-28 02:36:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:36:12,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-28 02:36:12,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:36:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14114 backedges. 6176 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:13,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:36:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14114 backedges. 6176 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:36:17,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509036172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:36:17,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:36:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 71 [2024-11-28 02:36:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318475565] [2024-11-28 02:36:17,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:36:17,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 02:36:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:36:17,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 02:36:17,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2287, Invalid=2683, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 02:36:17,396 INFO L87 Difference]: Start difference. First operand 458 states and 461 transitions. Second operand has 71 states, 71 states have (on average 6.774647887323944) internal successors, (481), 71 states have internal predecessors, (481), 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 02:36:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:36:19,471 INFO L93 Difference]: Finished difference Result 476 states and 480 transitions. [2024-11-28 02:36:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-28 02:36:19,472 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.774647887323944) internal successors, (481), 71 states have internal predecessors, (481), 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 456 [2024-11-28 02:36:19,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:36:19,474 INFO L225 Difference]: With dead ends: 476 [2024-11-28 02:36:19,474 INFO L226 Difference]: Without dead ends: 474 [2024-11-28 02:36:19,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 844 SyntacticMatches, 128 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9075 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=6837, Invalid=11523, Unknown=0, NotChecked=0, Total=18360 [2024-11-28 02:36:19,475 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 11 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:36:19,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1033 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:36:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-28 02:36:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 466. [2024-11-28 02:36:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.0086021505376344) internal successors, (469), 465 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 02:36:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 469 transitions. [2024-11-28 02:36:19,514 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 469 transitions. Word has length 456 [2024-11-28 02:36:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:36:19,514 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 469 transitions. [2024-11-28 02:36:19,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 6.774647887323944) internal successors, (481), 71 states have internal predecessors, (481), 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 02:36:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 469 transitions. [2024-11-28 02:36:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-28 02:36:19,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:36:19,516 INFO L218 NwaCegarLoop]: trace histogram [66, 65, 65, 65, 65, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:36:19,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-28 02:36:19,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20bcf260-9040-48e9-aacf-880c851ff513/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:36:19,717 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:36:19,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:36:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash 764529103, now seen corresponding path program 80 times [2024-11-28 02:36:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:36:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041643220] [2024-11-28 02:36:19,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:36:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms