./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme --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 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:32,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:32,297 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:50:32,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:32,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:32,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:32,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:32,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:32,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:32,334 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:32,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:32,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:32,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:32,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:32,338 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:32,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:32,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:32,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:32,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:32,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:32,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:32,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:32,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:32,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:32,345 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:32,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:32,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:32,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:32,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:32,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:32,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:32,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:32,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:32,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:32,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:32,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:32,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:32,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:32,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:32,353 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:32,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:32,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:32,355 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 [2023-11-26 11:50:32,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:32,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:32,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:32,692 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:32,693 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:32,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-26 11:50:35,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:36,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:36,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-26 11:50:36,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/data/ac5cbbe3e/e09a194ee860422d993b17a63cac1182/FLAG1f7bc43d7 [2023-11-26 11:50:36,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/data/ac5cbbe3e/e09a194ee860422d993b17a63cac1182 [2023-11-26 11:50:36,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:36,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:36,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:36,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:36,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:36,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:36" (1/1) ... [2023-11-26 11:50:36,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e188327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:36, skipping insertion in model container [2023-11-26 11:50:36,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:36" (1/1) ... [2023-11-26 11:50:36,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:37,023 WARN L240 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_650aa2d7-6545-4c61-b42b-7e673b419d15/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-11-26 11:50:37,073 WARN L240 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_650aa2d7-6545-4c61-b42b-7e673b419d15/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-11-26 11:50:38,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:38,161 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:38,189 WARN L240 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_650aa2d7-6545-4c61-b42b-7e673b419d15/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-11-26 11:50:38,196 WARN L240 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_650aa2d7-6545-4c61-b42b-7e673b419d15/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-11-26 11:50:38,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:38,885 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:38,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38 WrapperNode [2023-11-26 11:50:38,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:38,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:38,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:38,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:38,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:38,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,259 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4979 [2023-11-26 11:50:39,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:39,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:39,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:39,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:39,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,541 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]. [2023-11-26 11:50:39,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:39,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:39,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:39,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:39,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (1/1) ... [2023-11-26 11:50:39,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:40,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:40,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:40,312 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:40,320 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:45,817 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:45,901 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:45,901 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:50:45,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:45 BoogieIcfgContainer [2023-11-26 11:50:45,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:45,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:45,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:45,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:45,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:36" (1/3) ... [2023-11-26 11:50:45,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fae3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:45, skipping insertion in model container [2023-11-26 11:50:45,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:38" (2/3) ... [2023-11-26 11:50:45,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fae3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:45, skipping insertion in model container [2023-11-26 11:50:45,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:45" (3/3) ... [2023-11-26 11:50:45,915 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-26 11:50:45,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:45,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:50:46,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:46,038 INFO L357 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, mHoare=true, 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;@16593572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:46,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:50:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:50:46,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:46,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:46,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1841439881, now seen corresponding path program 1 times [2023-11-26 11:50:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:46,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24544170] [2023-11-26 11:50:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24544170] [2023-11-26 11:50:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24544170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:46,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396526895] [2023-11-26 11:50:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:50:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:50:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:50:46,412 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:46,534 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-11-26 11:50:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:50:46,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-26 11:50:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:46,559 INFO L225 Difference]: With dead ends: 1594 [2023-11-26 11:50:46,563 INFO L226 Difference]: Without dead ends: 803 [2023-11-26 11:50:46,570 INFO L412 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 [2023-11-26 11:50:46,577 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 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 [2023-11-26 11:50:46,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-26 11:50:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-26 11:50:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-11-26 11:50:46,673 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-11-26 11:50:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:46,674 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-11-26 11:50:46,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-11-26 11:50:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:50:46,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:46,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:46,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:46,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1254633867, now seen corresponding path program 1 times [2023-11-26 11:50:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009752384] [2023-11-26 11:50:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:46,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:46,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009752384] [2023-11-26 11:50:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009752384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977235057] [2023-11-26 11:50:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:46,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:46,850 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:46,960 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-11-26 11:50:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:46,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-26 11:50:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:46,968 INFO L225 Difference]: With dead ends: 864 [2023-11-26 11:50:46,969 INFO L226 Difference]: Without dead ends: 832 [2023-11-26 11:50:46,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:46,971 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:46,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-26 11:50:46,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-11-26 11:50:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-11-26 11:50:46,998 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-11-26 11:50:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:46,999 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-11-26 11:50:47,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-11-26 11:50:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:50:47,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:47,003 INFO L195 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] [2023-11-26 11:50:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:50:47,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash 479405031, now seen corresponding path program 1 times [2023-11-26 11:50:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64591654] [2023-11-26 11:50:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:47,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:47,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64591654] [2023-11-26 11:50:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64591654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713579554] [2023-11-26 11:50:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:47,112 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:51,911 INFO L93 Difference]: Finished difference Result 2307 states and 4378 transitions. [2023-11-26 11:50:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-26 11:50:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:51,923 INFO L225 Difference]: With dead ends: 2307 [2023-11-26 11:50:51,923 INFO L226 Difference]: Without dead ends: 1554 [2023-11-26 11:50:51,925 INFO L412 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 [2023-11-26 11:50:51,926 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 906 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:51,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 178 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-26 11:50:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-11-26 11:50:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2023-11-26 11:50:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.8324742268041236) internal successors, (2844), 1553 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2844 transitions. [2023-11-26 11:50:51,971 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2844 transitions. Word has length 29 [2023-11-26 11:50:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2844 transitions. [2023-11-26 11:50:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2844 transitions. [2023-11-26 11:50:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:50:51,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:51,974 INFO L195 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] [2023-11-26 11:50:51,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:51,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:51,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:51,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1671742577, now seen corresponding path program 1 times [2023-11-26 11:50:51,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:51,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245698054] [2023-11-26 11:50:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:52,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245698054] [2023-11-26 11:50:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245698054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:52,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:52,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991900530] [2023-11-26 11:50:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:52,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:52,101 INFO L87 Difference]: Start difference. First operand 1554 states and 2844 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:52,268 INFO L93 Difference]: Finished difference Result 1728 states and 3120 transitions. [2023-11-26 11:50:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:52,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-26 11:50:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:52,280 INFO L225 Difference]: With dead ends: 1728 [2023-11-26 11:50:52,281 INFO L226 Difference]: Without dead ends: 1699 [2023-11-26 11:50:52,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:52,292 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:52,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-11-26 11:50:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1581. [2023-11-26 11:50:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8283723875870805) internal successors, (2887), 1580 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2887 transitions. [2023-11-26 11:50:52,347 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2887 transitions. Word has length 32 [2023-11-26 11:50:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:52,347 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2887 transitions. [2023-11-26 11:50:52,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2887 transitions. [2023-11-26 11:50:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:50:52,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:52,352 INFO L195 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] [2023-11-26 11:50:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:50:52,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:52,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -349538145, now seen corresponding path program 1 times [2023-11-26 11:50:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167331588] [2023-11-26 11:50:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167331588] [2023-11-26 11:50:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167331588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:52,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727414889] [2023-11-26 11:50:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:52,473 INFO L87 Difference]: Start difference. First operand 1581 states and 2887 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:52,529 INFO L93 Difference]: Finished difference Result 1682 states and 3046 transitions. [2023-11-26 11:50:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:52,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-26 11:50:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:52,541 INFO L225 Difference]: With dead ends: 1682 [2023-11-26 11:50:52,541 INFO L226 Difference]: Without dead ends: 1626 [2023-11-26 11:50:52,542 INFO L412 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 [2023-11-26 11:50:52,543 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:52,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2023-11-26 11:50:52,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2023-11-26 11:50:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8205918618988903) internal successors, (2953), 1623 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2953 transitions. [2023-11-26 11:50:52,634 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2953 transitions. Word has length 34 [2023-11-26 11:50:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:52,635 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2953 transitions. [2023-11-26 11:50:52,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2953 transitions. [2023-11-26 11:50:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:50:52,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:52,641 INFO L195 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] [2023-11-26 11:50:52,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:50:52,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:52,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash -347393193, now seen corresponding path program 1 times [2023-11-26 11:50:52,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:52,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327612069] [2023-11-26 11:50:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327612069] [2023-11-26 11:50:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327612069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:52,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155718106] [2023-11-26 11:50:52,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:52,891 INFO L87 Difference]: Start difference. First operand 1624 states and 2953 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,014 INFO L93 Difference]: Finished difference Result 1725 states and 3109 transitions. [2023-11-26 11:50:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-26 11:50:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,030 INFO L225 Difference]: With dead ends: 1725 [2023-11-26 11:50:53,030 INFO L226 Difference]: Without dead ends: 1626 [2023-11-26 11:50:53,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:50:53,032 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:53,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2023-11-26 11:50:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1624. [2023-11-26 11:50:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8193588162762022) internal successors, (2951), 1623 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2951 transitions. [2023-11-26 11:50:53,105 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2951 transitions. Word has length 34 [2023-11-26 11:50:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,105 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2951 transitions. [2023-11-26 11:50:53,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2951 transitions. [2023-11-26 11:50:53,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:50:53,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,108 INFO L195 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] [2023-11-26 11:50:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:50:53,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:53,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1987358074, now seen corresponding path program 1 times [2023-11-26 11:50:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358646988] [2023-11-26 11:50:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358646988] [2023-11-26 11:50:53,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358646988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417591717] [2023-11-26 11:50:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:53,296 INFO L87 Difference]: Start difference. First operand 1624 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,369 INFO L93 Difference]: Finished difference Result 1632 states and 2960 transitions. [2023-11-26 11:50:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:53,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-26 11:50:53,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,381 INFO L225 Difference]: With dead ends: 1632 [2023-11-26 11:50:53,381 INFO L226 Difference]: Without dead ends: 1630 [2023-11-26 11:50:53,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:53,383 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:53,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-26 11:50:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1628. [2023-11-26 11:50:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1626 states have (on average 1.8167281672816729) internal successors, (2954), 1627 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2954 transitions. [2023-11-26 11:50:53,439 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2954 transitions. Word has length 35 [2023-11-26 11:50:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,440 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 2954 transitions. [2023-11-26 11:50:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2954 transitions. [2023-11-26 11:50:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:50:53,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,442 INFO L195 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] [2023-11-26 11:50:53,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:50:53,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:53,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 177157591, now seen corresponding path program 1 times [2023-11-26 11:50:53,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837552778] [2023-11-26 11:50:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837552778] [2023-11-26 11:50:53,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837552778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286824466] [2023-11-26 11:50:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,493 INFO L87 Difference]: Start difference. First operand 1628 states and 2954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,544 INFO L93 Difference]: Finished difference Result 1742 states and 3127 transitions. [2023-11-26 11:50:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:50:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,556 INFO L225 Difference]: With dead ends: 1742 [2023-11-26 11:50:53,556 INFO L226 Difference]: Without dead ends: 1682 [2023-11-26 11:50:53,557 INFO L412 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 [2023-11-26 11:50:53,559 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 [2023-11-26 11:50:53,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-11-26 11:50:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1680. [2023-11-26 11:50:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.8063170441001193) internal successors, (3031), 1679 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 3031 transitions. [2023-11-26 11:50:53,617 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 3031 transitions. Word has length 36 [2023-11-26 11:50:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,619 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 3031 transitions. [2023-11-26 11:50:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 3031 transitions. [2023-11-26 11:50:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:50:53,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,621 INFO L195 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] [2023-11-26 11:50:53,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:50:53,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:53,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -448498473, now seen corresponding path program 1 times [2023-11-26 11:50:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836306890] [2023-11-26 11:50:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836306890] [2023-11-26 11:50:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836306890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864938853] [2023-11-26 11:50:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,692 INFO L87 Difference]: Start difference. First operand 1680 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,746 INFO L93 Difference]: Finished difference Result 1962 states and 3451 transitions. [2023-11-26 11:50:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:50:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,760 INFO L225 Difference]: With dead ends: 1962 [2023-11-26 11:50:53,760 INFO L226 Difference]: Without dead ends: 1809 [2023-11-26 11:50:53,764 INFO L412 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 [2023-11-26 11:50:53,767 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 [2023-11-26 11:50:53,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-11-26 11:50:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1807. [2023-11-26 11:50:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1805 states have (on average 1.7800554016620498) internal successors, (3213), 1806 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3213 transitions. [2023-11-26 11:50:53,828 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3213 transitions. Word has length 36 [2023-11-26 11:50:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 3213 transitions. [2023-11-26 11:50:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3213 transitions. [2023-11-26 11:50:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:50:53,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:53,830 INFO L195 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] [2023-11-26 11:50:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:50:53,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:53,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 440234967, now seen corresponding path program 1 times [2023-11-26 11:50:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596476523] [2023-11-26 11:50:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596476523] [2023-11-26 11:50:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596476523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654576446] [2023-11-26 11:50:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,888 INFO L87 Difference]: Start difference. First operand 1807 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:53,948 INFO L93 Difference]: Finished difference Result 2319 states and 3955 transitions. [2023-11-26 11:50:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:50:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:53,962 INFO L225 Difference]: With dead ends: 2319 [2023-11-26 11:50:53,963 INFO L226 Difference]: Without dead ends: 2039 [2023-11-26 11:50:53,964 INFO L412 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 [2023-11-26 11:50:53,965 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 [2023-11-26 11:50:53,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-11-26 11:50:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2037. [2023-11-26 11:50:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7341523341523342) internal successors, (3529), 2036 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3529 transitions. [2023-11-26 11:50:54,039 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3529 transitions. Word has length 36 [2023-11-26 11:50:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:54,040 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 3529 transitions. [2023-11-26 11:50:54,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3529 transitions. [2023-11-26 11:50:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:50:54,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:54,042 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:50:54,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:50:54,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:54,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash -615837049, now seen corresponding path program 1 times [2023-11-26 11:50:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384663443] [2023-11-26 11:50:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:54,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384663443] [2023-11-26 11:50:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384663443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:54,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098351982] [2023-11-26 11:50:54,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:54,230 INFO L87 Difference]: Start difference. First operand 2037 states and 3529 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2023-11-26 11:50:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:54,439 INFO L93 Difference]: Finished difference Result 3545 states and 5681 transitions. [2023-11-26 11:50:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 50 [2023-11-26 11:50:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:54,461 INFO L225 Difference]: With dead ends: 3545 [2023-11-26 11:50:54,462 INFO L226 Difference]: Without dead ends: 3175 [2023-11-26 11:50:54,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:54,464 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:54,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-11-26 11:50:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2023-11-26 11:50:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6763636363636363) internal successors, (4149), 2476 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4149 transitions. [2023-11-26 11:50:54,587 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4149 transitions. Word has length 50 [2023-11-26 11:50:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:54,589 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4149 transitions. [2023-11-26 11:50:54,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2023-11-26 11:50:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4149 transitions. [2023-11-26 11:50:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:50:54,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:54,591 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:50:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:50:54,591 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:54,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1241493113, now seen corresponding path program 1 times [2023-11-26 11:50:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495335845] [2023-11-26 11:50:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495335845] [2023-11-26 11:50:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495335845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146361309] [2023-11-26 11:50:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:54,755 INFO L87 Difference]: Start difference. First operand 2477 states and 4149 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2023-11-26 11:50:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:54,965 INFO L93 Difference]: Finished difference Result 4053 states and 6401 transitions. [2023-11-26 11:50:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 50 [2023-11-26 11:50:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,004 INFO L225 Difference]: With dead ends: 4053 [2023-11-26 11:50:55,011 INFO L226 Difference]: Without dead ends: 3543 [2023-11-26 11:50:55,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:55,014 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-11-26 11:50:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2023-11-26 11:50:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6169876855067888) internal successors, (5121), 3168 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5121 transitions. [2023-11-26 11:50:55,161 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5121 transitions. Word has length 50 [2023-11-26 11:50:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,161 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5121 transitions. [2023-11-26 11:50:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2023-11-26 11:50:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5121 transitions. [2023-11-26 11:50:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:50:55,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,163 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:50:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:50:55,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:55,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash -352759673, now seen corresponding path program 1 times [2023-11-26 11:50:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717323850] [2023-11-26 11:50:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:50:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717323850] [2023-11-26 11:50:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717323850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007194092] [2023-11-26 11:50:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:55,303 INFO L87 Difference]: Start difference. First operand 3169 states and 5121 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-11-26 11:50:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,478 INFO L93 Difference]: Finished difference Result 4561 states and 7117 transitions. [2023-11-26 11:50:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:55,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 50 [2023-11-26 11:50:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,489 INFO L225 Difference]: With dead ends: 4561 [2023-11-26 11:50:55,489 INFO L226 Difference]: Without dead ends: 4051 [2023-11-26 11:50:55,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:55,492 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-11-26 11:50:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2023-11-26 11:50:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5882993197278912) internal successors, (5837), 3676 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5837 transitions. [2023-11-26 11:50:55,655 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5837 transitions. Word has length 50 [2023-11-26 11:50:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,656 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5837 transitions. [2023-11-26 11:50:55,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-11-26 11:50:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5837 transitions. [2023-11-26 11:50:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:50:55,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,658 INFO L195 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] [2023-11-26 11:50:55,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:50:55,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:55,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1472152007, now seen corresponding path program 1 times [2023-11-26 11:50:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436902473] [2023-11-26 11:50:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:55,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436902473] [2023-11-26 11:50:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436902473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553949470] [2023-11-26 11:50:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:55,770 INFO L87 Difference]: Start difference. First operand 3677 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,870 INFO L93 Difference]: Finished difference Result 5829 states and 8875 transitions. [2023-11-26 11:50:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:55,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-26 11:50:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,878 INFO L225 Difference]: With dead ends: 5829 [2023-11-26 11:50:55,879 INFO L226 Difference]: Without dead ends: 3679 [2023-11-26 11:50:55,882 INFO L412 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 [2023-11-26 11:50:55,883 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2023-11-26 11:50:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2023-11-26 11:50:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5746938775510204) internal successors, (5787), 3676 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5787 transitions. [2023-11-26 11:50:56,053 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5787 transitions. Word has length 51 [2023-11-26 11:50:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,053 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5787 transitions. [2023-11-26 11:50:56,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5787 transitions. [2023-11-26 11:50:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:50:56,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,056 INFO L195 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] [2023-11-26 11:50:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:50:56,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:56,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,057 INFO L85 PathProgramCache]: Analyzing trace with hash 805481295, now seen corresponding path program 1 times [2023-11-26 11:50:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341749731] [2023-11-26 11:50:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341749731] [2023-11-26 11:50:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341749731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914715959] [2023-11-26 11:50:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:56,146 INFO L87 Difference]: Start difference. First operand 3677 states and 5787 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,206 INFO L93 Difference]: Finished difference Result 4523 states and 6974 transitions. [2023-11-26 11:50:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-26 11:50:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,212 INFO L225 Difference]: With dead ends: 4523 [2023-11-26 11:50:56,212 INFO L226 Difference]: Without dead ends: 2373 [2023-11-26 11:50:56,216 INFO L412 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 [2023-11-26 11:50:56,217 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-26 11:50:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2023-11-26 11:50:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6759729272419628) internal successors, (3962), 2365 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3962 transitions. [2023-11-26 11:50:56,289 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3962 transitions. Word has length 52 [2023-11-26 11:50:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,290 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3962 transitions. [2023-11-26 11:50:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3962 transitions. [2023-11-26 11:50:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:50:56,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,291 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:50:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:50:56,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -441855801, now seen corresponding path program 1 times [2023-11-26 11:50:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730707308] [2023-11-26 11:50:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:56,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730707308] [2023-11-26 11:50:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730707308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279822387] [2023-11-26 11:50:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:56,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:56,376 INFO L87 Difference]: Start difference. First operand 2366 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,420 INFO L93 Difference]: Finished difference Result 2784 states and 4540 transitions. [2023-11-26 11:50:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-26 11:50:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,425 INFO L225 Difference]: With dead ends: 2784 [2023-11-26 11:50:56,425 INFO L226 Difference]: Without dead ends: 1954 [2023-11-26 11:50:56,427 INFO L412 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 [2023-11-26 11:50:56,427 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-26 11:50:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2023-11-26 11:50:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.731794871794872) internal successors, (3377), 1951 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3377 transitions. [2023-11-26 11:50:56,485 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3377 transitions. Word has length 53 [2023-11-26 11:50:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,486 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3377 transitions. [2023-11-26 11:50:56,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3377 transitions. [2023-11-26 11:50:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:50:56,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,487 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:50:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:50:56,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:56,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -448750379, now seen corresponding path program 1 times [2023-11-26 11:50:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107113983] [2023-11-26 11:50:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107113983] [2023-11-26 11:50:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107113983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120654998] [2023-11-26 11:50:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:58,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:58,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:58,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:50:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:50:58,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:59,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:59,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120654998] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:59,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:59,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-26 11:50:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069687783] [2023-11-26 11:50:59,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:50:59,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:50:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:50:59,480 INFO L87 Difference]: Start difference. First operand 1952 states and 3377 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:02,146 INFO L93 Difference]: Finished difference Result 4051 states and 6129 transitions. [2023-11-26 11:51:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-26 11:51:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 55 [2023-11-26 11:51:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:02,155 INFO L225 Difference]: With dead ends: 4051 [2023-11-26 11:51:02,155 INFO L226 Difference]: Without dead ends: 3635 [2023-11-26 11:51:02,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-11-26 11:51:02,159 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 14152 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14152 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:02,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14152 Valid, 7668 Invalid, 619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:51:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-11-26 11:51:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3423. [2023-11-26 11:51:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 3421 states have (on average 1.5290850628471206) internal successors, (5231), 3422 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 5231 transitions. [2023-11-26 11:51:02,340 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 5231 transitions. Word has length 55 [2023-11-26 11:51:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:02,340 INFO L495 AbstractCegarLoop]: Abstraction has 3423 states and 5231 transitions. [2023-11-26 11:51:02,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 5231 transitions. [2023-11-26 11:51:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:51:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:02,342 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:51:02,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:51:02,550 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:02,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash -248115839, now seen corresponding path program 1 times [2023-11-26 11:51:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51088157] [2023-11-26 11:51:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:03,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51088157] [2023-11-26 11:51:03,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51088157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:03,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523538955] [2023-11-26 11:51:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:03,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:51:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:51:03,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:03,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523538955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:05,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:05,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-26 11:51:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802829862] [2023-11-26 11:51:05,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 11:51:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 11:51:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:51:05,231 INFO L87 Difference]: Start difference. First operand 3423 states and 5231 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:06,091 INFO L93 Difference]: Finished difference Result 6752 states and 9463 transitions. [2023-11-26 11:51:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 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 56 [2023-11-26 11:51:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:06,102 INFO L225 Difference]: With dead ends: 6752 [2023-11-26 11:51:06,102 INFO L226 Difference]: Without dead ends: 5173 [2023-11-26 11:51:06,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-11-26 11:51:06,107 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 11867 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11867 SdHoareTripleChecker+Valid, 7555 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:06,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11867 Valid, 7555 Invalid, 321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2023-11-26 11:51:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4963. [2023-11-26 11:51:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4961 states have (on average 1.448498286635759) internal successors, (7186), 4962 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7186 transitions. [2023-11-26 11:51:06,340 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7186 transitions. Word has length 56 [2023-11-26 11:51:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:06,341 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 7186 transitions. [2023-11-26 11:51:06,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7186 transitions. [2023-11-26 11:51:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:51:06,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:06,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:51:06,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:06,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:51:06,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:06,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2077442177, now seen corresponding path program 1 times [2023-11-26 11:51:06,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:06,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879693700] [2023-11-26 11:51:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879693700] [2023-11-26 11:51:07,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879693700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:07,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483103433] [2023-11-26 11:51:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:07,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:07,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:07,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:51:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:51:07,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:07,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483103433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:08,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:08,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-26 11:51:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672981125] [2023-11-26 11:51:08,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 11:51:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 11:51:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:51:08,942 INFO L87 Difference]: Start difference. First operand 4963 states and 7186 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:10,107 INFO L93 Difference]: Finished difference Result 8312 states and 11462 transitions. [2023-11-26 11:51:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:51:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-26 11:51:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:10,118 INFO L225 Difference]: With dead ends: 8312 [2023-11-26 11:51:10,119 INFO L226 Difference]: Without dead ends: 5311 [2023-11-26 11:51:10,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-26 11:51:10,125 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 10652 mSDsluCounter, 7716 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10652 SdHoareTripleChecker+Valid, 9209 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:10,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10652 Valid, 9209 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-11-26 11:51:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5023. [2023-11-26 11:51:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5021 states have (on average 1.4351722764389563) internal successors, (7206), 5022 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 7206 transitions. [2023-11-26 11:51:10,348 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 7206 transitions. Word has length 56 [2023-11-26 11:51:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:10,348 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 7206 transitions. [2023-11-26 11:51:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 7206 transitions. [2023-11-26 11:51:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:51:10,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:10,350 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:51:10,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:10,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:10,556 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:10,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -988630143, now seen corresponding path program 1 times [2023-11-26 11:51:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576949097] [2023-11-26 11:51:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:10,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:11,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576949097] [2023-11-26 11:51:11,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576949097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849024141] [2023-11-26 11:51:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:11,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:11,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:11,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:51:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:51:11,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:11,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:13,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849024141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:13,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:13,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-26 11:51:13,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612496362] [2023-11-26 11:51:13,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:13,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 11:51:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 11:51:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:51:13,010 INFO L87 Difference]: Start difference. First operand 5023 states and 7206 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:14,087 INFO L93 Difference]: Finished difference Result 11604 states and 15489 transitions. [2023-11-26 11:51:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:51:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-26 11:51:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:14,105 INFO L225 Difference]: With dead ends: 11604 [2023-11-26 11:51:14,105 INFO L226 Difference]: Without dead ends: 8842 [2023-11-26 11:51:14,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-11-26 11:51:14,112 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 14953 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14953 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:14,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14953 Valid, 6084 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2023-11-26 11:51:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8322. [2023-11-26 11:51:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 8320 states have (on average 1.3495192307692307) internal successors, (11228), 8321 states have internal predecessors, (11228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 11228 transitions. [2023-11-26 11:51:14,562 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 11228 transitions. Word has length 56 [2023-11-26 11:51:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:14,562 INFO L495 AbstractCegarLoop]: Abstraction has 8322 states and 11228 transitions. [2023-11-26 11:51:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 11228 transitions. [2023-11-26 11:51:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:51:14,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:14,564 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 11:51:14,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:14,771 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:14,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash 303878803, now seen corresponding path program 1 times [2023-11-26 11:51:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105171573] [2023-11-26 11:51:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:15,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105171573] [2023-11-26 11:51:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105171573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769014069] [2023-11-26 11:51:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:15,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:15,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_650aa2d7-6545-4c61-b42b-7e673b419d15/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:15,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 11:51:15,953 INFO L285 TraceCheckSpWp]: Computing forward predicates...