./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1 --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 71ab165d8600c7bf3c601364205c3c131ed910663de3282b3121f676cf35500e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:16:38,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:16:38,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:16:38,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:16:38,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:16:38,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:16:38,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:16:38,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:16:38,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:16:38,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:16:38,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:16:38,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:16:38,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:16:38,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:16:38,838 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:16:38,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:16:38,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:16:38,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:16:38,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:16:38,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:16:38,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:38,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:38,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:38,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:16:38,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:16:38,842 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_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1 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 -> 71ab165d8600c7bf3c601364205c3c131ed910663de3282b3121f676cf35500e [2024-12-01 13:16:39,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:16:39,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:16:39,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:16:39,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:16:39,068 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:16:39,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c [2024-12-01 13:16:41,682 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/data/1009a0a79/44d1bef29aa241cf90c314c01bebe777/FLAG4d7b585ed [2024-12-01 13:16:42,173 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:16:42,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c [2024-12-01 13:16:42,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/data/1009a0a79/44d1bef29aa241cf90c314c01bebe777/FLAG4d7b585ed [2024-12-01 13:16:42,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/data/1009a0a79/44d1bef29aa241cf90c314c01bebe777 [2024-12-01 13:16:42,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:16:42,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:16:42,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:42,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:16:42,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:16:42,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:42" (1/1) ... [2024-12-01 13:16:42,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bb5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:42, skipping insertion in model container [2024-12-01 13:16:42,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:42" (1/1) ... [2024-12-01 13:16:42,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:16:42,663 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_65f65114-4309-464c-94a0-8346627d462a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[8616,8629] [2024-12-01 13:16:42,717 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_65f65114-4309-464c-94a0-8346627d462a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[15906,15919] [2024-12-01 13:16:43,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:43,319 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:16:43,346 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_65f65114-4309-464c-94a0-8346627d462a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[8616,8629] [2024-12-01 13:16:43,358 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_65f65114-4309-464c-94a0-8346627d462a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c[15906,15919] [2024-12-01 13:16:43,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:43,813 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:16:43,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43 WrapperNode [2024-12-01 13:16:43,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:43,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:43,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:16:43,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:16:43,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:43,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,136 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-12-01 13:16:44,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:44,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:16:44,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:16:44,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:16:44,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,333 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]. [2024-12-01 13:16:44,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,423 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:16:44,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:16:44,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:16:44,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:16:44,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (1/1) ... [2024-12-01 13:16:44,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:44,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:16:44,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:16:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:16:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:16:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:16:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:16:44,698 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:16:44,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:16:49,110 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-12-01 13:16:49,110 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:16:49,138 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:16:49,138 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-01 13:16:49,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:49 BoogieIcfgContainer [2024-12-01 13:16:49,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:16:49,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:16:49,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:16:49,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:16:49,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:16:42" (1/3) ... [2024-12-01 13:16:49,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee30050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:49, skipping insertion in model container [2024-12-01 13:16:49,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:43" (2/3) ... [2024-12-01 13:16:49,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee30050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:49, skipping insertion in model container [2024-12-01 13:16:49,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:49" (3/3) ... [2024-12-01 13:16:49,147 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c [2024-12-01 13:16:49,162 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:16:49,165 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label02.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-01 13:16:49,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:16:49,261 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;@1b697a74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:16:49,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-01 13:16:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-01 13:16:49,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:49,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:49,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:49,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1782369673, now seen corresponding path program 1 times [2024-12-01 13:16:49,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:49,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144081133] [2024-12-01 13:16:49,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:49,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144081133] [2024-12-01 13:16:49,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144081133] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:49,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:16:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308537184] [2024-12-01 13:16:49,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:16:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:49,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:16:49,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:16:49,522 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:49,600 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-12-01 13:16:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:16:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-12-01 13:16:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:49,615 INFO L225 Difference]: With dead ends: 1743 [2024-12-01 13:16:49,615 INFO L226 Difference]: Without dead ends: 820 [2024-12-01 13:16:49,620 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 [2024-12-01 13:16:49,622 INFO L435 NwaCegarLoop]: 1616 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, 1616 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 [2024-12-01 13:16:49,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-12-01 13:16:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-12-01 13:16:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-12-01 13:16:49,692 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-12-01 13:16:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:49,692 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-12-01 13:16:49,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-12-01 13:16:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-01 13:16:49,694 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:49,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:49,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 13:16:49,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:49,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-12-01 13:16:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897354872] [2024-12-01 13:16:49,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:49,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:49,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897354872] [2024-12-01 13:16:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897354872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:49,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:49,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:16:49,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729229706] [2024-12-01 13:16:49,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:49,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:16:49,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:49,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:16:49,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:49,892 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:50,006 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-12-01 13:16:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:50,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-12-01 13:16:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:50,011 INFO L225 Difference]: With dead ends: 898 [2024-12-01 13:16:50,011 INFO L226 Difference]: Without dead ends: 857 [2024-12-01 13:16:50,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:50,012 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:50,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-12-01 13:16:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-12-01 13:16:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-12-01 13:16:50,032 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-12-01 13:16:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:50,032 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-12-01 13:16:50,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-12-01 13:16:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-01 13:16:50,033 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:50,033 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:50,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 13:16:50,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:50,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-12-01 13:16:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:50,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76522140] [2024-12-01 13:16:50,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76522140] [2024-12-01 13:16:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76522140] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831805144] [2024-12-01 13:16:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:50,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:50,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:50,200 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:50,394 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-12-01 13:16:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 13:16:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-01 13:16:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:50,400 INFO L225 Difference]: With dead ends: 1116 [2024-12-01 13:16:50,400 INFO L226 Difference]: Without dead ends: 1079 [2024-12-01 13:16:50,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-01 13:16:50,401 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:50,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-12-01 13:16:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-12-01 13:16:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-12-01 13:16:50,426 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-12-01 13:16:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:50,426 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-12-01 13:16:50,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-12-01 13:16:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-01 13:16:50,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:50,428 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:50,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 13:16:50,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:50,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-12-01 13:16:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678661513] [2024-12-01 13:16:50,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:50,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678661513] [2024-12-01 13:16:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678661513] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255581371] [2024-12-01 13:16:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:50,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:50,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:50,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:50,521 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:50,559 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-12-01 13:16:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:50,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-12-01 13:16:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:50,564 INFO L225 Difference]: With dead ends: 988 [2024-12-01 13:16:50,564 INFO L226 Difference]: Without dead ends: 916 [2024-12-01 13:16:50,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:50,565 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:50,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-12-01 13:16:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-12-01 13:16:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-12-01 13:16:50,592 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-12-01 13:16:50,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:50,592 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-12-01 13:16:50,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-12-01 13:16:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-01 13:16:50,593 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:50,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:50,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 13:16:50,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:50,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:50,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-12-01 13:16:50,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:50,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091867372] [2024-12-01 13:16:50,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:50,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091867372] [2024-12-01 13:16:50,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091867372] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:50,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:50,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16495182] [2024-12-01 13:16:50,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:50,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:50,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:50,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:50,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:50,823 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:50,954 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-12-01 13:16:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-12-01 13:16:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:50,959 INFO L225 Difference]: With dead ends: 1047 [2024-12-01 13:16:50,959 INFO L226 Difference]: Without dead ends: 916 [2024-12-01 13:16:50,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:50,960 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:50,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-12-01 13:16:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-12-01 13:16:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-12-01 13:16:50,986 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-12-01 13:16:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:50,986 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-12-01 13:16:50,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-12-01 13:16:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-01 13:16:50,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:50,987 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:50,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 13:16:50,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:50,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-12-01 13:16:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:50,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724237267] [2024-12-01 13:16:50,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724237267] [2024-12-01 13:16:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724237267] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:16:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583243670] [2024-12-01 13:16:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:16:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:16:51,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:51,231 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:51,277 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-12-01 13:16:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-12-01 13:16:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:51,282 INFO L225 Difference]: With dead ends: 922 [2024-12-01 13:16:51,282 INFO L226 Difference]: Without dead ends: 920 [2024-12-01 13:16:51,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:51,283 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:51,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-12-01 13:16:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-12-01 13:16:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-12-01 13:16:51,308 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-12-01 13:16:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:51,309 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-12-01 13:16:51,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-12-01 13:16:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 13:16:51,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:51,310 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 13:16:51,310 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:51,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-12-01 13:16:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125803444] [2024-12-01 13:16:51,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125803444] [2024-12-01 13:16:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125803444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514140853] [2024-12-01 13:16:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:51,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:51,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,373 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:51,403 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-12-01 13:16:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:51,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) Word has length 49 [2024-12-01 13:16:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:51,407 INFO L225 Difference]: With dead ends: 1071 [2024-12-01 13:16:51,407 INFO L226 Difference]: Without dead ends: 993 [2024-12-01 13:16:51,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,408 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:51,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-12-01 13:16:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-12-01 13:16:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-12-01 13:16:51,436 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-12-01 13:16:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:51,436 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-12-01 13:16:51,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-12-01 13:16:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 13:16:51,436 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:51,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:51,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 13:16:51,437 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:51,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-12-01 13:16:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333352172] [2024-12-01 13:16:51,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:51,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333352172] [2024-12-01 13:16:51,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333352172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218348670] [2024-12-01 13:16:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:51,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,513 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:51,546 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-12-01 13:16:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) Word has length 49 [2024-12-01 13:16:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:51,551 INFO L225 Difference]: With dead ends: 1377 [2024-12-01 13:16:51,552 INFO L226 Difference]: Without dead ends: 1172 [2024-12-01 13:16:51,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,553 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:51,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-12-01 13:16:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-12-01 13:16:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-12-01 13:16:51,586 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-12-01 13:16:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:51,586 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-12-01 13:16:51,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-12-01 13:16:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 13:16:51,586 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:51,587 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:51,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 13:16:51,587 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:51,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-12-01 13:16:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847089770] [2024-12-01 13:16:51,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:51,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847089770] [2024-12-01 13:16:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847089770] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:51,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958276850] [2024-12-01 13:16:51,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:51,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:51,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,649 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:51,691 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-12-01 13:16:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) Word has length 49 [2024-12-01 13:16:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:51,698 INFO L225 Difference]: With dead ends: 1890 [2024-12-01 13:16:51,698 INFO L226 Difference]: Without dead ends: 1506 [2024-12-01 13:16:51,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,699 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:51,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-12-01 13:16:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-12-01 13:16:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-12-01 13:16:51,742 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-12-01 13:16:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:51,742 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-12-01 13:16:51,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-12-01 13:16:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 13:16:51,743 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:51,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:51,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 13:16:51,743 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:51,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-12-01 13:16:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678201191] [2024-12-01 13:16:51,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678201191] [2024-12-01 13:16:51,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678201191] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:51,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066744199] [2024-12-01 13:16:51,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:51,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:51,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,802 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:51,844 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-12-01 13:16:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) Word has length 49 [2024-12-01 13:16:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:51,852 INFO L225 Difference]: With dead ends: 2844 [2024-12-01 13:16:51,852 INFO L226 Difference]: Without dead ends: 2126 [2024-12-01 13:16:51,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,854 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:51,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-12-01 13:16:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-12-01 13:16:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-12-01 13:16:51,913 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-12-01 13:16:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:51,914 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-12-01 13:16:51,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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) [2024-12-01 13:16:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-12-01 13:16:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-01 13:16:51,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:51,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:51,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 13:16:51,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:51,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:51,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1737458945, now seen corresponding path program 1 times [2024-12-01 13:16:51,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575495794] [2024-12-01 13:16:51,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:51,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:51,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:51,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575495794] [2024-12-01 13:16:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575495794] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:16:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090111815] [2024-12-01 13:16:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:51,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:51,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:51,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:51,994 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2024-12-01 13:16:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:55,272 INFO L93 Difference]: Finished difference Result 3628 states and 6217 transitions. [2024-12-01 13:16:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) Word has length 63 [2024-12-01 13:16:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:55,278 INFO L225 Difference]: With dead ends: 3628 [2024-12-01 13:16:55,278 INFO L226 Difference]: Without dead ends: 2875 [2024-12-01 13:16:55,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:55,279 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 825 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:55,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 562 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-01 13:16:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2024-12-01 13:16:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2875. [2024-12-01 13:16:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.5046989209885138) internal successors, (4323), 2874 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4323 transitions. [2024-12-01 13:16:55,325 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4323 transitions. Word has length 63 [2024-12-01 13:16:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:55,326 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4323 transitions. [2024-12-01 13:16:55,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2024-12-01 13:16:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4323 transitions. [2024-12-01 13:16:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 13:16:55,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:55,327 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:55,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 13:16:55,327 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:55,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-12-01 13:16:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953651001] [2024-12-01 13:16:55,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953651001] [2024-12-01 13:16:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953651001] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184092978] [2024-12-01 13:16:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:55,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:55,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:55,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:55,433 INFO L87 Difference]: Start difference. First operand 2875 states and 4323 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:55,577 INFO L93 Difference]: Finished difference Result 8149 states and 11696 transitions. [2024-12-01 13:16:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-12-01 13:16:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:55,590 INFO L225 Difference]: With dead ends: 8149 [2024-12-01 13:16:55,590 INFO L226 Difference]: Without dead ends: 7187 [2024-12-01 13:16:55,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:55,593 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4650 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:55,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 3398 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-12-01 13:16:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-12-01 13:16:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.4695652173913043) internal successors, (5915), 4026 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5915 transitions. [2024-12-01 13:16:55,679 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5915 transitions. Word has length 67 [2024-12-01 13:16:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:55,679 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 5915 transitions. [2024-12-01 13:16:55,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5915 transitions. [2024-12-01 13:16:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 13:16:55,681 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:55,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:55,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 13:16:55,681 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:55,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-12-01 13:16:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278512203] [2024-12-01 13:16:55,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278512203] [2024-12-01 13:16:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278512203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:55,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:55,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927031912] [2024-12-01 13:16:55,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:55,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:55,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:55,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:55,805 INFO L87 Difference]: Start difference. First operand 4027 states and 5915 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-12-01 13:16:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:56,004 INFO L93 Difference]: Finished difference Result 9485 states and 13552 transitions. [2024-12-01 13:16:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) Word has length 67 [2024-12-01 13:16:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:56,027 INFO L225 Difference]: With dead ends: 9485 [2024-12-01 13:16:56,027 INFO L226 Difference]: Without dead ends: 8147 [2024-12-01 13:16:56,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:56,031 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4652 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:56,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3373 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-12-01 13:16:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-12-01 13:16:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.441362780345831) internal successors, (8419), 5842 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8419 transitions. [2024-12-01 13:16:56,208 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8419 transitions. Word has length 67 [2024-12-01 13:16:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:56,208 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8419 transitions. [2024-12-01 13:16:56,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-12-01 13:16:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8419 transitions. [2024-12-01 13:16:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 13:16:56,209 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:56,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:56,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 13:16:56,210 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:56,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-12-01 13:16:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:56,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024668762] [2024-12-01 13:16:56,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-01 13:16:56,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024668762] [2024-12-01 13:16:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024668762] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:56,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796386485] [2024-12-01 13:16:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:56,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:56,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:56,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:56,341 INFO L87 Difference]: Start difference. First operand 5843 states and 8419 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-12-01 13:16:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:56,560 INFO L93 Difference]: Finished difference Result 10821 states and 15400 transitions. [2024-12-01 13:16:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 67 [2024-12-01 13:16:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:56,584 INFO L225 Difference]: With dead ends: 10821 [2024-12-01 13:16:56,584 INFO L226 Difference]: Without dead ends: 9483 [2024-12-01 13:16:56,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:56,589 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4677 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:56,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-12-01 13:16:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-12-01 13:16:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.430542009196043) internal successors, (10267), 7178 states have internal predecessors, (10267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10267 transitions. [2024-12-01 13:16:56,827 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10267 transitions. Word has length 67 [2024-12-01 13:16:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:56,828 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10267 transitions. [2024-12-01 13:16:56,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-12-01 13:16:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10267 transitions. [2024-12-01 13:16:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 13:16:56,830 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:56,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:56,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 13:16:56,830 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:56,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-12-01 13:16:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378492868] [2024-12-01 13:16:56,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:16:56,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:56,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378492868] [2024-12-01 13:16:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378492868] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:56,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:56,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:16:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607749030] [2024-12-01 13:16:56,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:56,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:56,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:56,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:56,954 INFO L87 Difference]: Start difference. First operand 7179 states and 10267 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:57,194 INFO L93 Difference]: Finished difference Result 12157 states and 17248 transitions. [2024-12-01 13:16:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 67 [2024-12-01 13:16:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:57,211 INFO L225 Difference]: With dead ends: 12157 [2024-12-01 13:16:57,211 INFO L226 Difference]: Without dead ends: 10819 [2024-12-01 13:16:57,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:57,215 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4664 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:57,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4664 Valid, 3376 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:57,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-12-01 13:16:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-12-01 13:16:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4231175848701985) internal successors, (12115), 8514 states have internal predecessors, (12115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12115 transitions. [2024-12-01 13:16:57,356 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12115 transitions. Word has length 67 [2024-12-01 13:16:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:57,356 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12115 transitions. [2024-12-01 13:16:57,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12115 transitions. [2024-12-01 13:16:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-01 13:16:57,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:57,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:57,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 13:16:57,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:57,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-12-01 13:16:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71509229] [2024-12-01 13:16:57,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:57,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71509229] [2024-12-01 13:16:57,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71509229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:57,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:57,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:57,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254571470] [2024-12-01 13:16:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:57,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:57,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:57,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:57,428 INFO L87 Difference]: Start difference. First operand 8515 states and 12115 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:57,523 INFO L93 Difference]: Finished difference Result 15495 states and 21781 transitions. [2024-12-01 13:16:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2024-12-01 13:16:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:57,536 INFO L225 Difference]: With dead ends: 15495 [2024-12-01 13:16:57,536 INFO L226 Difference]: Without dead ends: 8517 [2024-12-01 13:16:57,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:57,542 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:57,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-12-01 13:16:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-12-01 13:16:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4085516269235288) internal successors, (11991), 8514 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 11991 transitions. [2024-12-01 13:16:57,777 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 11991 transitions. Word has length 68 [2024-12-01 13:16:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:57,777 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 11991 transitions. [2024-12-01 13:16:57,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 11991 transitions. [2024-12-01 13:16:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-01 13:16:57,778 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:57,779 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:57,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 13:16:57,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:57,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-12-01 13:16:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:57,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016549011] [2024-12-01 13:16:57,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:57,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016549011] [2024-12-01 13:16:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016549011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:57,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:57,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845234179] [2024-12-01 13:16:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:57,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:57,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:57,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:57,866 INFO L87 Difference]: Start difference. First operand 8515 states and 11991 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:57,940 INFO L93 Difference]: Finished difference Result 11177 states and 15664 transitions. [2024-12-01 13:16:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:57,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-12-01 13:16:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:57,950 INFO L225 Difference]: With dead ends: 11177 [2024-12-01 13:16:57,950 INFO L226 Difference]: Without dead ends: 4199 [2024-12-01 13:16:57,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:57,956 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:57,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-12-01 13:16:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-12-01 13:16:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.4493791786055397) internal successors, (6070), 4189 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6070 transitions. [2024-12-01 13:16:58,043 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6070 transitions. Word has length 69 [2024-12-01 13:16:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:58,043 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6070 transitions. [2024-12-01 13:16:58,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6070 transitions. [2024-12-01 13:16:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-01 13:16:58,044 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:58,044 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:58,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-01 13:16:58,044 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-12-01 13:16:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729386081] [2024-12-01 13:16:58,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729386081] [2024-12-01 13:16:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729386081] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:58,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686561164] [2024-12-01 13:16:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:58,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:58,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:58,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:58,130 INFO L87 Difference]: Start difference. First operand 4190 states and 6070 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:58,172 INFO L93 Difference]: Finished difference Result 5514 states and 7876 transitions. [2024-12-01 13:16:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:58,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-01 13:16:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:58,179 INFO L225 Difference]: With dead ends: 5514 [2024-12-01 13:16:58,179 INFO L226 Difference]: Without dead ends: 2872 [2024-12-01 13:16:58,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:58,182 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:58,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-12-01 13:16:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-12-01 13:16:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.4797768479776847) internal successors, (4244), 2869 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4244 transitions. [2024-12-01 13:16:58,234 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4244 transitions. Word has length 70 [2024-12-01 13:16:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:58,234 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4244 transitions. [2024-12-01 13:16:58,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4244 transitions. [2024-12-01 13:16:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 13:16:58,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:58,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:58,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-01 13:16:58,235 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-12-01 13:16:58,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175497586] [2024-12-01 13:16:58,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175497586] [2024-12-01 13:16:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175497586] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:58,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:16:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842319753] [2024-12-01 13:16:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:58,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:16:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:58,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:16:58,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:58,318 INFO L87 Difference]: Start difference. First operand 2870 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:58,350 INFO L93 Difference]: Finished difference Result 3534 states and 5137 transitions. [2024-12-01 13:16:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:16:58,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-01 13:16:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:58,356 INFO L225 Difference]: With dead ends: 3534 [2024-12-01 13:16:58,356 INFO L226 Difference]: Without dead ends: 2212 [2024-12-01 13:16:58,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:16:58,358 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:58,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-12-01 13:16:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-12-01 13:16:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.513586956521739) internal successors, (3342), 2209 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3342 transitions. [2024-12-01 13:16:58,395 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3342 transitions. Word has length 72 [2024-12-01 13:16:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:58,395 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3342 transitions. [2024-12-01 13:16:58,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:16:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3342 transitions. [2024-12-01 13:16:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-01 13:16:58,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:58,396 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:58,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 13:16:58,396 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-12-01 13:16:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070986547] [2024-12-01 13:16:58,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:59,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070986547] [2024-12-01 13:16:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070986547] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699288764] [2024-12-01 13:16:59,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:59,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:59,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:59,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:16:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:59,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-01 13:16:59,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:00,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699288764] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:00,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:00,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-12-01 13:17:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574770912] [2024-12-01 13:17:00,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:00,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-01 13:17:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:00,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-01 13:17:00,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:17:00,647 INFO L87 Difference]: Start difference. First operand 2210 states and 3342 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:05,703 INFO L93 Difference]: Finished difference Result 8126 states and 11018 transitions. [2024-12-01 13:17:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-01 13:17:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 74 [2024-12-01 13:17:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:05,713 INFO L225 Difference]: With dead ends: 8126 [2024-12-01 13:17:05,713 INFO L226 Difference]: Without dead ends: 7390 [2024-12-01 13:17:05,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4084 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1738, Invalid=9392, Unknown=0, NotChecked=0, Total=11130 [2024-12-01 13:17:05,717 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 18534 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18534 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:05,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18534 Valid, 9423 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 13:17:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2024-12-01 13:17:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 6652. [2024-12-01 13:17:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6652 states, 6650 states have (on average 1.3562406015037594) internal successors, (9019), 6651 states have internal predecessors, (9019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6652 states to 6652 states and 9019 transitions. [2024-12-01 13:17:05,850 INFO L78 Accepts]: Start accepts. Automaton has 6652 states and 9019 transitions. Word has length 74 [2024-12-01 13:17:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:05,851 INFO L471 AbstractCegarLoop]: Abstraction has 6652 states and 9019 transitions. [2024-12-01 13:17:05,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6652 states and 9019 transitions. [2024-12-01 13:17:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-01 13:17:05,852 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:05,852 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:05,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-01 13:17:06,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:06,053 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:06,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash 619603757, now seen corresponding path program 1 times [2024-12-01 13:17:06,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580590044] [2024-12-01 13:17:06,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:06,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:07,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580590044] [2024-12-01 13:17:07,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580590044] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:17:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438747794] [2024-12-01 13:17:07,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:07,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:17:07,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:17:07,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:17:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:07,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-01 13:17:07,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:07,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:08,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438747794] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:08,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:08,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-12-01 13:17:08,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837719897] [2024-12-01 13:17:08,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:08,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-01 13:17:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:08,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-01 13:17:08,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-12-01 13:17:08,751 INFO L87 Difference]: Start difference. First operand 6652 states and 9019 transitions. Second operand has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:10,104 INFO L93 Difference]: Finished difference Result 26752 states and 34983 transitions. [2024-12-01 13:17:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-01 13:17:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-12-01 13:17:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:10,147 INFO L225 Difference]: With dead ends: 26752 [2024-12-01 13:17:10,147 INFO L226 Difference]: Without dead ends: 21714 [2024-12-01 13:17:10,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=615, Invalid=2465, Unknown=0, NotChecked=0, Total=3080 [2024-12-01 13:17:10,152 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 15606 mSDsluCounter, 6464 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15606 SdHoareTripleChecker+Valid, 7965 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:10,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15606 Valid, 7965 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:17:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21714 states. [2024-12-01 13:17:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21714 to 21702. [2024-12-01 13:17:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21702 states, 21700 states have (on average 1.3009216589861752) internal successors, (28230), 21701 states have internal predecessors, (28230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21702 states to 21702 states and 28230 transitions. [2024-12-01 13:17:10,655 INFO L78 Accepts]: Start accepts. Automaton has 21702 states and 28230 transitions. Word has length 75 [2024-12-01 13:17:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:10,655 INFO L471 AbstractCegarLoop]: Abstraction has 21702 states and 28230 transitions. [2024-12-01 13:17:10,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 21702 states and 28230 transitions. [2024-12-01 13:17:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-01 13:17:10,657 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:10,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:10,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 13:17:10,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-01 13:17:10,858 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:10,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2069741267, now seen corresponding path program 1 times [2024-12-01 13:17:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:10,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863656845] [2024-12-01 13:17:10,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:12,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863656845] [2024-12-01 13:17:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863656845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:17:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464828493] [2024-12-01 13:17:12,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:12,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:17:12,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:17:12,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:17:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:12,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 13:17:12,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:12,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464828493] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:13,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:13,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-01 13:17:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528263788] [2024-12-01 13:17:13,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:13,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-01 13:17:13,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:13,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-01 13:17:13,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-12-01 13:17:13,613 INFO L87 Difference]: Start difference. First operand 21702 states and 28230 transitions. Second operand has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 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) [2024-12-01 13:17:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:17,325 INFO L93 Difference]: Finished difference Result 71118 states and 92570 transitions. [2024-12-01 13:17:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-01 13:17:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 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 75 [2024-12-01 13:17:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:17,372 INFO L225 Difference]: With dead ends: 71118 [2024-12-01 13:17:17,372 INFO L226 Difference]: Without dead ends: 51782 [2024-12-01 13:17:17,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=845, Invalid=3577, Unknown=0, NotChecked=0, Total=4422 [2024-12-01 13:17:17,384 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 20870 mSDsluCounter, 7904 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20870 SdHoareTripleChecker+Valid, 9404 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:17,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20870 Valid, 9404 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-01 13:17:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51782 states. [2024-12-01 13:17:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51782 to 44018. [2024-12-01 13:17:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44018 states, 44016 states have (on average 1.2721737549981824) internal successors, (55996), 44017 states have internal predecessors, (55996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44018 states to 44018 states and 55996 transitions. [2024-12-01 13:17:18,573 INFO L78 Accepts]: Start accepts. Automaton has 44018 states and 55996 transitions. Word has length 75 [2024-12-01 13:17:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:18,573 INFO L471 AbstractCegarLoop]: Abstraction has 44018 states and 55996 transitions. [2024-12-01 13:17:18,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 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) [2024-12-01 13:17:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 44018 states and 55996 transitions. [2024-12-01 13:17:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-01 13:17:18,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:18,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:18,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:17:18,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:18,775 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:18,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2128735329, now seen corresponding path program 1 times [2024-12-01 13:17:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255823688] [2024-12-01 13:17:18,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255823688] [2024-12-01 13:17:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255823688] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:17:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63233319] [2024-12-01 13:17:19,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:17:19,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:17:19,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:17:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:19,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-01 13:17:19,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:20,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63233319] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:21,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:21,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-12-01 13:17:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664605672] [2024-12-01 13:17:21,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:21,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-01 13:17:21,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:21,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-01 13:17:21,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-12-01 13:17:21,787 INFO L87 Difference]: Start difference. First operand 44018 states and 55996 transitions. Second operand has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:28,249 INFO L93 Difference]: Finished difference Result 124506 states and 158056 transitions. [2024-12-01 13:17:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-01 13:17:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-12-01 13:17:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:28,379 INFO L225 Difference]: With dead ends: 124506 [2024-12-01 13:17:28,379 INFO L226 Difference]: Without dead ends: 82580 [2024-12-01 13:17:28,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1461, Invalid=5849, Unknown=0, NotChecked=0, Total=7310 [2024-12-01 13:17:28,396 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 19540 mSDsluCounter, 12632 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19540 SdHoareTripleChecker+Valid, 14143 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:28,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19540 Valid, 14143 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:17:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82580 states. [2024-12-01 13:17:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82580 to 47034. [2024-12-01 13:17:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47034 states, 47032 states have (on average 1.25680387821058) internal successors, (59110), 47033 states have internal predecessors, (59110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47034 states to 47034 states and 59110 transitions. [2024-12-01 13:17:29,744 INFO L78 Accepts]: Start accepts. Automaton has 47034 states and 59110 transitions. Word has length 75 [2024-12-01 13:17:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:29,744 INFO L471 AbstractCegarLoop]: Abstraction has 47034 states and 59110 transitions. [2024-12-01 13:17:29,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 47034 states and 59110 transitions. [2024-12-01 13:17:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 13:17:29,745 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:29,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:29,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:17:29,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-01 13:17:29,946 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:29,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-12-01 13:17:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:29,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65719852] [2024-12-01 13:17:29,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65719852] [2024-12-01 13:17:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65719852] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:17:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489859646] [2024-12-01 13:17:30,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:30,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:17:30,492 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:17:30,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:17:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:30,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-01 13:17:30,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:33,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489859646] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:37,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:37,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 24] total 57 [2024-12-01 13:17:37,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664360733] [2024-12-01 13:17:37,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:37,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-01 13:17:37,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:37,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-01 13:17:37,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2654, Unknown=0, NotChecked=0, Total=3192 [2024-12-01 13:17:37,060 INFO L87 Difference]: Start difference. First operand 47034 states and 59110 transitions. Second operand has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 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) [2024-12-01 13:17:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:52,285 INFO L93 Difference]: Finished difference Result 120356 states and 150280 transitions. [2024-12-01 13:17:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-01 13:17:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 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 77 [2024-12-01 13:17:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:52,373 INFO L225 Difference]: With dead ends: 120356 [2024-12-01 13:17:52,374 INFO L226 Difference]: Without dead ends: 102682 [2024-12-01 13:17:52,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=4487, Invalid=18465, Unknown=0, NotChecked=0, Total=22952 [2024-12-01 13:17:52,399 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 23533 mSDsluCounter, 23890 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23533 SdHoareTripleChecker+Valid, 25410 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:52,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23533 Valid, 25410 Invalid, 3407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-01 13:17:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102682 states. [2024-12-01 13:17:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102682 to 55512. [2024-12-01 13:17:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55512 states, 55510 states have (on average 1.2585119798234552) internal successors, (69860), 55511 states have internal predecessors, (69860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:17:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55512 states to 55512 states and 69860 transitions. [2024-12-01 13:17:54,616 INFO L78 Accepts]: Start accepts. Automaton has 55512 states and 69860 transitions. Word has length 77 [2024-12-01 13:17:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:54,617 INFO L471 AbstractCegarLoop]: Abstraction has 55512 states and 69860 transitions. [2024-12-01 13:17:54,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 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) [2024-12-01 13:17:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 55512 states and 69860 transitions. [2024-12-01 13:17:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-01 13:17:54,618 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:54,618 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:54,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 13:17:54,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:54,818 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:54,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -747594897, now seen corresponding path program 1 times [2024-12-01 13:17:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289523108] [2024-12-01 13:17:54,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289523108] [2024-12-01 13:17:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289523108] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:17:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360293666] [2024-12-01 13:17:55,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:55,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:17:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:17:55,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:17:55,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 13:17:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:55,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-01 13:17:55,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:17:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:56,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:17:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:17:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360293666] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:17:57,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:17:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-12-01 13:17:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862693118] [2024-12-01 13:17:57,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:17:57,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-01 13:17:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:57,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-01 13:17:57,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-12-01 13:17:57,422 INFO L87 Difference]: Start difference. First operand 55512 states and 69860 transitions. Second operand has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 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) [2024-12-01 13:18:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:03,405 INFO L93 Difference]: Finished difference Result 114216 states and 142160 transitions. [2024-12-01 13:18:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-01 13:18:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 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) Word has length 77 [2024-12-01 13:18:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:03,461 INFO L225 Difference]: With dead ends: 114216 [2024-12-01 13:18:03,461 INFO L226 Difference]: Without dead ends: 83052 [2024-12-01 13:18:03,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1026, Invalid=3666, Unknown=0, NotChecked=0, Total=4692 [2024-12-01 13:18:03,478 INFO L435 NwaCegarLoop]: 1512 mSDtfsCounter, 13185 mSDsluCounter, 16698 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13185 SdHoareTripleChecker+Valid, 18210 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:03,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13185 Valid, 18210 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:18:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83052 states. [2024-12-01 13:18:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83052 to 73667. [2024-12-01 13:18:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73667 states, 73665 states have (on average 1.2427339985067536) internal successors, (91546), 73666 states have internal predecessors, (91546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73667 states to 73667 states and 91546 transitions. [2024-12-01 13:18:06,272 INFO L78 Accepts]: Start accepts. Automaton has 73667 states and 91546 transitions. Word has length 77 [2024-12-01 13:18:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:06,272 INFO L471 AbstractCegarLoop]: Abstraction has 73667 states and 91546 transitions. [2024-12-01 13:18:06,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 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) [2024-12-01 13:18:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 73667 states and 91546 transitions. [2024-12-01 13:18:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-01 13:18:06,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:06,273 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:06,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 13:18:06,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-01 13:18:06,473 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:18:06,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 400854277, now seen corresponding path program 1 times [2024-12-01 13:18:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807823125] [2024-12-01 13:18:06,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:06,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807823125] [2024-12-01 13:18:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807823125] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157255015] [2024-12-01 13:18:07,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:07,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:07,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:07,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:07,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 13:18:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:07,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-01 13:18:07,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:08,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157255015] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:09,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-12-01 13:18:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486080765] [2024-12-01 13:18:09,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:09,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-01 13:18:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:09,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-01 13:18:09,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-12-01 13:18:09,138 INFO L87 Difference]: Start difference. First operand 73667 states and 91546 transitions. Second operand has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:15,179 INFO L93 Difference]: Finished difference Result 157726 states and 196291 transitions. [2024-12-01 13:18:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-01 13:18:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-01 13:18:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:15,274 INFO L225 Difference]: With dead ends: 157726 [2024-12-01 13:18:15,274 INFO L226 Difference]: Without dead ends: 129094 [2024-12-01 13:18:15,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2024-12-01 13:18:15,296 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 9036 mSDsluCounter, 10906 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9036 SdHoareTripleChecker+Valid, 12422 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:15,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9036 Valid, 12422 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 13:18:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129094 states. [2024-12-01 13:18:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129094 to 65291. [2024-12-01 13:18:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65291 states, 65289 states have (on average 1.2445588077624101) internal successors, (81256), 65290 states have internal predecessors, (81256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65291 states to 65291 states and 81256 transitions. [2024-12-01 13:18:18,398 INFO L78 Accepts]: Start accepts. Automaton has 65291 states and 81256 transitions. Word has length 79 [2024-12-01 13:18:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:18,398 INFO L471 AbstractCegarLoop]: Abstraction has 65291 states and 81256 transitions. [2024-12-01 13:18:18,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 65291 states and 81256 transitions. [2024-12-01 13:18:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-01 13:18:18,402 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:18,403 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:18,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 13:18:18,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-01 13:18:18,603 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:18:18,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -214204917, now seen corresponding path program 1 times [2024-12-01 13:18:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436631094] [2024-12-01 13:18:18,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 47 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436631094] [2024-12-01 13:18:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436631094] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699337660] [2024-12-01 13:18:19,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:19,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:19,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 13:18:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:19,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-01 13:18:19,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:24,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699337660] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:30,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:30,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 24] total 60 [2024-12-01 13:18:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893961360] [2024-12-01 13:18:30,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:30,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-01 13:18:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:30,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-01 13:18:30,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=3266, Unknown=0, NotChecked=0, Total=3660 [2024-12-01 13:18:30,523 INFO L87 Difference]: Start difference. First operand 65291 states and 81256 transitions. Second operand has 61 states, 61 states have (on average 5.39344262295082) internal successors, (329), 60 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) [2024-12-01 13:18:36,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:18:39,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:18:50,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:18:58,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:19:34,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:19:39,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:19:44,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:19:47,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:19:51,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:20:14,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:20:19,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:20:25,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:21:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:47,666 INFO L93 Difference]: Finished difference Result 261097 states and 323856 transitions. [2024-12-01 13:21:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2024-12-01 13:21:47,666 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.39344262295082) internal successors, (329), 60 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) Word has length 123 [2024-12-01 13:21:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:47,853 INFO L225 Difference]: With dead ends: 261097 [2024-12-01 13:21:47,853 INFO L226 Difference]: Without dead ends: 211482 [2024-12-01 13:21:47,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 544 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126829 ImplicationChecksByTransitivity, 135.2s TimeCoverageRelationStatistics Valid=31018, Invalid=266545, Unknown=7, NotChecked=0, Total=297570 [2024-12-01 13:21:47,924 INFO L435 NwaCegarLoop]: 1809 mSDtfsCounter, 41831 mSDsluCounter, 34681 mSDsCounter, 0 mSdLazyCounter, 10503 mSolverCounterSat, 468 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41831 SdHoareTripleChecker+Valid, 36490 SdHoareTripleChecker+Invalid, 10978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 10503 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:47,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41831 Valid, 36490 Invalid, 10978 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [468 Valid, 10503 Invalid, 7 Unknown, 0 Unchecked, 54.5s Time] [2024-12-01 13:21:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211482 states. [2024-12-01 13:21:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211482 to 138248. [2024-12-01 13:21:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138248 states, 138246 states have (on average 1.2346903346208933) internal successors, (170691), 138247 states have internal predecessors, (170691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:21:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138248 states to 138248 states and 170691 transitions. [2024-12-01 13:21:55,945 INFO L78 Accepts]: Start accepts. Automaton has 138248 states and 170691 transitions. Word has length 123 [2024-12-01 13:21:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:55,946 INFO L471 AbstractCegarLoop]: Abstraction has 138248 states and 170691 transitions. [2024-12-01 13:21:55,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.39344262295082) internal successors, (329), 60 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) [2024-12-01 13:21:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 138248 states and 170691 transitions. [2024-12-01 13:21:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-01 13:21:55,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:55,955 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:55,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-01 13:21:56,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-01 13:21:56,156 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:56,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1335191140, now seen corresponding path program 1 times [2024-12-01 13:21:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75892268] [2024-12-01 13:21:56,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:21:57,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:57,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75892268] [2024-12-01 13:21:57,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75892268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:57,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055875917] [2024-12-01 13:21:57,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:57,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:57,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:57,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 13:21:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:57,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-01 13:21:57,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:22:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:22:02,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:22:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:22:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055875917] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:22:11,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:22:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 22] total 63 [2024-12-01 13:22:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760872911] [2024-12-01 13:22:11,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:22:11,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-01 13:22:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:22:11,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-01 13:22:11,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=3481, Unknown=0, NotChecked=0, Total=3906 [2024-12-01 13:22:11,522 INFO L87 Difference]: Start difference. First operand 138248 states and 170691 transitions. Second operand has 63 states, 63 states have (on average 5.666666666666667) internal successors, (357), 63 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:22:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:22:53,198 INFO L93 Difference]: Finished difference Result 294580 states and 364958 transitions. [2024-12-01 13:22:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-12-01 13:22:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.666666666666667) internal successors, (357), 63 states have internal predecessors, (357), 0 states have call successors, (0), 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 [2024-12-01 13:22:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:22:53,415 INFO L225 Difference]: With dead ends: 294580 [2024-12-01 13:22:53,415 INFO L226 Difference]: Without dead ends: 251805 [2024-12-01 13:22:53,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7725 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=4766, Invalid=21640, Unknown=0, NotChecked=0, Total=26406 [2024-12-01 13:22:53,448 INFO L435 NwaCegarLoop]: 1593 mSDtfsCounter, 16301 mSDsluCounter, 37954 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16301 SdHoareTripleChecker+Valid, 39547 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:22:53,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16301 Valid, 39547 Invalid, 3807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-01 13:22:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251805 states. [2024-12-01 13:23:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251805 to 235985. [2024-12-01 13:23:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235985 states, 235983 states have (on average 1.2328684693388932) internal successors, (290936), 235984 states have internal predecessors, (290936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:23:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235985 states to 235985 states and 290936 transitions. [2024-12-01 13:23:07,992 INFO L78 Accepts]: Start accepts. Automaton has 235985 states and 290936 transitions. Word has length 124 [2024-12-01 13:23:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:23:07,992 INFO L471 AbstractCegarLoop]: Abstraction has 235985 states and 290936 transitions. [2024-12-01 13:23:07,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.666666666666667) internal successors, (357), 63 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:23:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 235985 states and 290936 transitions. [2024-12-01 13:23:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 13:23:07,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:23:07,998 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:23:08,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-01 13:23:08,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-01 13:23:08,199 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:23:08,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:23:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1210517765, now seen corresponding path program 1 times [2024-12-01 13:23:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:23:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241125780] [2024-12-01 13:23:08,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:23:08,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:23:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:23:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:23:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:23:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241125780] [2024-12-01 13:23:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241125780] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:23:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584785761] [2024-12-01 13:23:09,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:23:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:23:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:23:09,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:23:09,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 13:23:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:23:09,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-01 13:23:09,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:23:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:23:15,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:23:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:23:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584785761] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:23:23,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:23:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31, 32] total 78 [2024-12-01 13:23:23,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198526710] [2024-12-01 13:23:23,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:23:23,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-01 13:23:23,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:23:23,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-01 13:23:23,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=5420, Unknown=0, NotChecked=0, Total=6006 [2024-12-01 13:23:23,713 INFO L87 Difference]: Start difference. First operand 235985 states and 290936 transitions. Second operand has 78 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:25:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:25:28,376 INFO L93 Difference]: Finished difference Result 511157 states and 631854 transitions. [2024-12-01 13:25:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2024-12-01 13:25:28,377 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 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 125 [2024-12-01 13:25:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:25:28,941 INFO L225 Difference]: With dead ends: 511157 [2024-12-01 13:25:28,941 INFO L226 Difference]: Without dead ends: 417318 [2024-12-01 13:25:29,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31690 ImplicationChecksByTransitivity, 93.5s TimeCoverageRelationStatistics Valid=14573, Invalid=72157, Unknown=0, NotChecked=0, Total=86730 [2024-12-01 13:25:29,023 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 27694 mSDsluCounter, 38541 mSDsCounter, 0 mSdLazyCounter, 5483 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27694 SdHoareTripleChecker+Valid, 40137 SdHoareTripleChecker+Invalid, 5811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:25:29,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27694 Valid, 40137 Invalid, 5811 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [328 Valid, 5483 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-01 13:25:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417318 states. [2024-12-01 13:25:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417318 to 284713. [2024-12-01 13:25:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284713 states, 284711 states have (on average 1.2311923318733733) internal successors, (350534), 284712 states have internal predecessors, (350534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:25:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284713 states to 284713 states and 350534 transitions. [2024-12-01 13:25:53,134 INFO L78 Accepts]: Start accepts. Automaton has 284713 states and 350534 transitions. Word has length 125 [2024-12-01 13:25:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:25:53,135 INFO L471 AbstractCegarLoop]: Abstraction has 284713 states and 350534 transitions. [2024-12-01 13:25:53,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:25:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 284713 states and 350534 transitions. [2024-12-01 13:25:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:25:53,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:25:53,139 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:25:53,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-01 13:25:53,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-01 13:25:53,340 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:25:53,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:25:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 136819678, now seen corresponding path program 1 times [2024-12-01 13:25:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:25:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038252649] [2024-12-01 13:25:53,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:25:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:25:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:25:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 40 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:25:54,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:25:54,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038252649] [2024-12-01 13:25:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038252649] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:25:54,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129780233] [2024-12-01 13:25:54,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:25:54,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:25:54,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:25:54,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:25:54,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 13:25:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:25:54,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-01 13:25:54,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:26:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 40 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:26:01,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:26:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 40 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:26:11,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129780233] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:26:11,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:26:11,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 26] total 70 [2024-12-01 13:26:11,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927455357] [2024-12-01 13:26:11,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:26:11,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-01 13:26:11,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:26:11,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-01 13:26:11,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=4310, Unknown=1, NotChecked=0, Total=4830 [2024-12-01 13:26:11,251 INFO L87 Difference]: Start difference. First operand 284713 states and 350534 transitions. Second operand has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 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) [2024-12-01 13:26:15,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:19,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:25,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:32,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:36,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:39,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:27:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:27:36,489 INFO L93 Difference]: Finished difference Result 536386 states and 661861 transitions. [2024-12-01 13:27:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-12-01 13:27:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-12-01 13:27:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:27:37,342 INFO L225 Difference]: With dead ends: 536386 [2024-12-01 13:27:37,343 INFO L226 Difference]: Without dead ends: 410332 [2024-12-01 13:27:37,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9055 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=5050, Invalid=24705, Unknown=1, NotChecked=0, Total=29756 [2024-12-01 13:27:37,486 INFO L435 NwaCegarLoop]: 1635 mSDtfsCounter, 27013 mSDsluCounter, 29648 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 162 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27013 SdHoareTripleChecker+Valid, 31283 SdHoareTripleChecker+Invalid, 4240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:27:37,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27013 Valid, 31283 Invalid, 4240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 4075 Invalid, 3 Unknown, 0 Unchecked, 30.6s Time] [2024-12-01 13:27:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410332 states. [2024-12-01 13:28:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410332 to 328190. [2024-12-01 13:28:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328190 states, 328188 states have (on average 1.2271259156337222) internal successors, (402728), 328189 states have internal predecessors, (402728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:28:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328190 states to 328190 states and 402728 transitions. [2024-12-01 13:28:11,892 INFO L78 Accepts]: Start accepts. Automaton has 328190 states and 402728 transitions. Word has length 126 [2024-12-01 13:28:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:28:11,893 INFO L471 AbstractCegarLoop]: Abstraction has 328190 states and 402728 transitions. [2024-12-01 13:28:11,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.8428571428571425) internal successors, (339), 70 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) [2024-12-01 13:28:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 328190 states and 402728 transitions. [2024-12-01 13:28:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-01 13:28:11,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:11,914 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:11,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 13:28:12,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:12,116 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:12,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2137790958, now seen corresponding path program 1 times [2024-12-01 13:28:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:28:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310336409] [2024-12-01 13:28:12,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:28:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 32 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:28:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:28:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310336409] [2024-12-01 13:28:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310336409] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:28:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457917050] [2024-12-01 13:28:14,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:14,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:14,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:14,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:14,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65f65114-4309-464c-94a0-8346627d462a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 13:28:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:14,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-01 13:28:14,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:28:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 22 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:28:18,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:28:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 22 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:28:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457917050] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:28:23,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:28:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 49 [2024-12-01 13:28:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507477580] [2024-12-01 13:28:23,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:28:23,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-01 13:28:23,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:28:23,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-01 13:28:23,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2163, Unknown=0, NotChecked=0, Total=2352 [2024-12-01 13:28:23,576 INFO L87 Difference]: Start difference. First operand 328190 states and 402728 transitions. Second operand has 49 states, 49 states have (on average 7.346938775510204) internal successors, (360), 49 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)