./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:00:46,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:00:46,893 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:00:46,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:00:46,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:00:46,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:00:46,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:00:46,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:00:46,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:00:46,928 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:00:46,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:00:46,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:00:46,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:00:46,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:00:46,929 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:00:46,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:00:46,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:00:46,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:00:46,931 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:46,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:46,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:46,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:00:46,933 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0248500070fcb488ef1ad28c8f201e8340587643ff9baf1ad195abca806e8b [2024-11-28 05:00:47,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:00:47,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:00:47,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:00:47,301 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:00:47,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:00:47,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-28 05:00:50,784 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/data/f080c131c/ef5c15eaf4be483a92a1290af0ddadb8/FLAG516bc3a22 [2024-11-28 05:00:51,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:00:51,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-28 05:00:51,115 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/data/f080c131c/ef5c15eaf4be483a92a1290af0ddadb8/FLAG516bc3a22 [2024-11-28 05:00:51,360 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/data/f080c131c/ef5c15eaf4be483a92a1290af0ddadb8 [2024-11-28 05:00:51,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:00:51,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:00:51,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:51,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:00:51,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:00:51,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f59af9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51, skipping insertion in model container [2024-11-28 05:00:51,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:00:51,608 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-11-28 05:00:51,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:51,702 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:00:51,717 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-59.i[917,930] [2024-11-28 05:00:51,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:51,796 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:00:51,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51 WrapperNode [2024-11-28 05:00:51,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:51,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:51,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:00:51,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:00:51,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,864 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 361 [2024-11-28 05:00:51,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:51,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:00:51,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:00:51,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:00:51,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,915 INFO L175 MemorySlicer]: Split 96 memory accesses to 5 slices as follows [2, 12, 32, 24, 26]. 33 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 4, 3, 3]. The 16 writes are split as follows [0, 2, 6, 4, 4]. [2024-11-28 05:00:51,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:00:51,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:00:51,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:00:51,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:00:51,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (1/1) ... [2024-11-28 05:00:51,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:52,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:00:52,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:00:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:00:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:00:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:00:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:00:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:00:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:00:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:00:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:00:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:00:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:00:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:00:52,200 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:00:52,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:00:52,726 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-11-28 05:00:52,726 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:00:52,739 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:00:52,739 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:00:52,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:52 BoogieIcfgContainer [2024-11-28 05:00:52,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:00:52,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:00:52,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:00:52,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:00:52,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:00:51" (1/3) ... [2024-11-28 05:00:52,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420a2ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:52, skipping insertion in model container [2024-11-28 05:00:52,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:51" (2/3) ... [2024-11-28 05:00:52,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420a2ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:52, skipping insertion in model container [2024-11-28 05:00:52,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:52" (3/3) ... [2024-11-28 05:00:52,751 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-59.i [2024-11-28 05:00:52,769 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:00:52,771 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-59.i that has 2 procedures, 84 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:00:52,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:00:52,859 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5350b1fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:00:52,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:00:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-28 05:00:52,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 05:00:52,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:52,874 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:52,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:52,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1500553373, now seen corresponding path program 1 times [2024-11-28 05:00:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585851766] [2024-11-28 05:00:52,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:52,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-28 05:00:53,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585851766] [2024-11-28 05:00:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585851766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120238928] [2024-11-28 05:00:53,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:53,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:53,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:53,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:53,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:00:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:53,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:00:53,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-28 05:00:53,705 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120238928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:00:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830254007] [2024-11-28 05:00:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:53,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:00:53,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:53,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:00:53,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:00:53,735 INFO L87 Difference]: Start difference. First operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:53,775 INFO L93 Difference]: Finished difference Result 161 states and 256 transitions. [2024-11-28 05:00:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:00:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-11-28 05:00:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:53,788 INFO L225 Difference]: With dead ends: 161 [2024-11-28 05:00:53,788 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:00:53,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:00:53,797 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:53,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:00:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-28 05:00:53,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-28 05:00:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2024-11-28 05:00:53,855 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 131 [2024-11-28 05:00:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:53,855 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2024-11-28 05:00:53,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2024-11-28 05:00:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 05:00:53,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:53,860 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:53,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:00:54,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:54,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:54,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1926669505, now seen corresponding path program 1 times [2024-11-28 05:00:54,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054753309] [2024-11-28 05:00:54,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054753309] [2024-11-28 05:00:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054753309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682142489] [2024-11-28 05:00:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:55,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:55,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:55,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:55,032 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 05:00:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:55,402 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2024-11-28 05:00:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2024-11-28 05:00:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:55,405 INFO L225 Difference]: With dead ends: 235 [2024-11-28 05:00:55,407 INFO L226 Difference]: Without dead ends: 158 [2024-11-28 05:00:55,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:55,409 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 102 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:55,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 365 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:00:55,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-28 05:00:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2024-11-28 05:00:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:00:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 214 transitions. [2024-11-28 05:00:55,448 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 214 transitions. Word has length 131 [2024-11-28 05:00:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:55,448 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 214 transitions. [2024-11-28 05:00:55,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 05:00:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 214 transitions. [2024-11-28 05:00:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:55,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:55,455 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:55,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:00:55,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:55,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1794896017, now seen corresponding path program 1 times [2024-11-28 05:00:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:55,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070012264] [2024-11-28 05:00:55,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070012264] [2024-11-28 05:00:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070012264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999400023] [2024-11-28 05:00:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:55,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:55,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:55,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:55,614 INFO L87 Difference]: Start difference. First operand 148 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:55,665 INFO L93 Difference]: Finished difference Result 248 states and 363 transitions. [2024-11-28 05:00:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-11-28 05:00:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:55,669 INFO L225 Difference]: With dead ends: 248 [2024-11-28 05:00:55,672 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 05:00:55,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:55,673 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:55,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 05:00:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-28 05:00:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 111 states have internal predecessors, (144), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:00:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2024-11-28 05:00:55,715 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 133 [2024-11-28 05:00:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:55,716 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2024-11-28 05:00:55,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2024-11-28 05:00:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:55,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:55,721 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:55,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:00:55,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:55,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash 505926573, now seen corresponding path program 1 times [2024-11-28 05:00:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:55,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372489945] [2024-11-28 05:00:55,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372489945] [2024-11-28 05:00:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372489945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:56,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741515576] [2024-11-28 05:00:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:56,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:56,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:56,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:56,459 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:56,753 INFO L93 Difference]: Finished difference Result 322 states and 467 transitions. [2024-11-28 05:00:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-28 05:00:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:56,759 INFO L225 Difference]: With dead ends: 322 [2024-11-28 05:00:56,759 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 05:00:56,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:56,761 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 121 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:56,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 254 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:00:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 05:00:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2024-11-28 05:00:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:00:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 326 transitions. [2024-11-28 05:00:56,825 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 326 transitions. Word has length 133 [2024-11-28 05:00:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:56,826 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 326 transitions. [2024-11-28 05:00:56,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 326 transitions. [2024-11-28 05:00:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:56,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:56,831 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:56,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:00:56,832 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:56,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -80879441, now seen corresponding path program 1 times [2024-11-28 05:00:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:56,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222423858] [2024-11-28 05:00:56,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:57,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:57,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222423858] [2024-11-28 05:00:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222423858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:57,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081560121] [2024-11-28 05:00:57,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:57,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:57,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:57,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:57,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:57,116 INFO L87 Difference]: Start difference. First operand 226 states and 326 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:57,373 INFO L93 Difference]: Finished difference Result 460 states and 659 transitions. [2024-11-28 05:00:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2024-11-28 05:00:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:57,377 INFO L225 Difference]: With dead ends: 460 [2024-11-28 05:00:57,379 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 05:00:57,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:57,382 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 81 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:57,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 309 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:00:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 05:00:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2024-11-28 05:00:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 216 states have internal predecessors, (274), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:00:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 410 transitions. [2024-11-28 05:00:57,451 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 410 transitions. Word has length 133 [2024-11-28 05:00:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:57,453 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 410 transitions. [2024-11-28 05:00:57,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 410 transitions. [2024-11-28 05:00:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:57,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:57,456 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:57,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:00:57,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:57,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -473906451, now seen corresponding path program 1 times [2024-11-28 05:00:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:57,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469768351] [2024-11-28 05:00:57,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:57,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469768351] [2024-11-28 05:00:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469768351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:00:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400087548] [2024-11-28 05:00:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:58,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:58,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:58,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:58,538 INFO L87 Difference]: Start difference. First operand 290 states and 410 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:59,106 INFO L93 Difference]: Finished difference Result 643 states and 908 transitions. [2024-11-28 05:00:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-28 05:00:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:59,113 INFO L225 Difference]: With dead ends: 643 [2024-11-28 05:00:59,113 INFO L226 Difference]: Without dead ends: 423 [2024-11-28 05:00:59,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:00:59,118 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 163 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:59,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 364 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:00:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-28 05:00:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 418. [2024-11-28 05:00:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 328 states have (on average 1.295731707317073) internal successors, (425), 332 states have internal predecessors, (425), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:00:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 585 transitions. [2024-11-28 05:00:59,210 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 585 transitions. Word has length 133 [2024-11-28 05:00:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:59,211 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 585 transitions. [2024-11-28 05:00:59,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 585 transitions. [2024-11-28 05:00:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:59,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:59,214 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:59,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:00:59,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:59,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:59,215 INFO L85 PathProgramCache]: Analyzing trace with hash 206151919, now seen corresponding path program 1 times [2024-11-28 05:00:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:59,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359124847] [2024-11-28 05:00:59,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:00:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359124847] [2024-11-28 05:00:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359124847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601292559] [2024-11-28 05:00:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:59,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:59,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:59,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:59,507 INFO L87 Difference]: Start difference. First operand 418 states and 585 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:59,813 INFO L93 Difference]: Finished difference Result 886 states and 1245 transitions. [2024-11-28 05:00:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-28 05:00:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:59,819 INFO L225 Difference]: With dead ends: 886 [2024-11-28 05:00:59,820 INFO L226 Difference]: Without dead ends: 537 [2024-11-28 05:00:59,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:59,822 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 102 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:59,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 392 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:00:59,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-28 05:00:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 435. [2024-11-28 05:00:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 349 states have internal predecessors, (446), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:00:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 606 transitions. [2024-11-28 05:00:59,903 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 606 transitions. Word has length 133 [2024-11-28 05:00:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:59,904 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 606 transitions. [2024-11-28 05:00:59,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:00:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 606 transitions. [2024-11-28 05:00:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 05:00:59,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:59,909 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:59,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:00:59,909 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:59,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash -215741013, now seen corresponding path program 1 times [2024-11-28 05:00:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698668546] [2024-11-28 05:00:59,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:00,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698668546] [2024-11-28 05:01:00,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698668546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:00,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:00,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:01:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220613240] [2024-11-28 05:01:00,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:00,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:01:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:00,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:01:00,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:00,181 INFO L87 Difference]: Start difference. First operand 435 states and 606 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:00,506 INFO L93 Difference]: Finished difference Result 862 states and 1202 transitions. [2024-11-28 05:01:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2024-11-28 05:01:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:00,511 INFO L225 Difference]: With dead ends: 862 [2024-11-28 05:01:00,512 INFO L226 Difference]: Without dead ends: 503 [2024-11-28 05:01:00,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:01:00,517 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 104 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:00,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 393 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:01:00,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-28 05:01:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 417. [2024-11-28 05:01:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 327 states have (on average 1.2844036697247707) internal successors, (420), 331 states have internal predecessors, (420), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 580 transitions. [2024-11-28 05:01:00,592 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 580 transitions. Word has length 133 [2024-11-28 05:01:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:00,593 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 580 transitions. [2024-11-28 05:01:00,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 580 transitions. [2024-11-28 05:01:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 05:01:00,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:00,595 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:00,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:01:00,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:00,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:00,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1737620353, now seen corresponding path program 1 times [2024-11-28 05:01:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:00,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149532906] [2024-11-28 05:01:00,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149532906] [2024-11-28 05:01:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149532906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:01:01,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87686107] [2024-11-28 05:01:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:01,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:01:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:01,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:01:01,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:01:01,279 INFO L87 Difference]: Start difference. First operand 417 states and 580 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:01,721 INFO L93 Difference]: Finished difference Result 1038 states and 1438 transitions. [2024-11-28 05:01:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:01:01,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2024-11-28 05:01:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:01,729 INFO L225 Difference]: With dead ends: 1038 [2024-11-28 05:01:01,729 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 05:01:01,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:01:01,732 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 143 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:01,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 545 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:01:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 05:01:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 491. [2024-11-28 05:01:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.2892768079800498) internal successors, (517), 405 states have internal predecessors, (517), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 677 transitions. [2024-11-28 05:01:01,840 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 677 transitions. Word has length 135 [2024-11-28 05:01:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:01,841 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 677 transitions. [2024-11-28 05:01:01,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 677 transitions. [2024-11-28 05:01:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:01:01,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:01,845 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:01,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:01:01,845 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:01,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 5422576, now seen corresponding path program 1 times [2024-11-28 05:01:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570510506] [2024-11-28 05:01:01,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:01:02,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814508162] [2024-11-28 05:01:02,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:02,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:02,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:02,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:01:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:02,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:01:02,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:05,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:05,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:06,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:01:06,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2024-11-28 05:01:06,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:01:06,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2024-11-28 05:01:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-28 05:01:06,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:07,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-11-28 05:01:07,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-28 05:01:11,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:11,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570510506] [2024-11-28 05:01:11,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:01:11,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814508162] [2024-11-28 05:01:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814508162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:11,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-28 05:01:11,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094580097] [2024-11-28 05:01:11,409 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:11,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:01:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:11,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:01:11,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-11-28 05:01:11,411 INFO L87 Difference]: Start difference. First operand 491 states and 677 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:12,562 INFO L93 Difference]: Finished difference Result 930 states and 1283 transitions. [2024-11-28 05:01:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:01:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2024-11-28 05:01:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:12,569 INFO L225 Difference]: With dead ends: 930 [2024-11-28 05:01:12,569 INFO L226 Difference]: Without dead ends: 520 [2024-11-28 05:01:12,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=93, Invalid=248, Unknown=1, NotChecked=0, Total=342 [2024-11-28 05:01:12,571 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 109 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:12,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 578 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:01:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-28 05:01:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 491. [2024-11-28 05:01:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.286783042394015) internal successors, (516), 405 states have internal predecessors, (516), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 676 transitions. [2024-11-28 05:01:12,637 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 676 transitions. Word has length 136 [2024-11-28 05:01:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:12,638 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 676 transitions. [2024-11-28 05:01:12,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 676 transitions. [2024-11-28 05:01:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 05:01:12,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:12,640 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:12,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:01:12,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:12,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:12,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash 312298948, now seen corresponding path program 1 times [2024-11-28 05:01:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:12,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329842188] [2024-11-28 05:01:12,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:12,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:01:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608786220] [2024-11-28 05:01:12,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:12,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:12,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:01:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:13,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 05:01:13,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:13,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 05:01:15,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:15,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:17,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:01:17,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:01:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:01:17,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 05:01:17,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:01:17,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 05:01:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-28 05:01:17,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:17,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2024-11-28 05:01:17,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2024-11-28 05:01:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329842188] [2024-11-28 05:01:22,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:01:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608786220] [2024-11-28 05:01:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608786220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:22,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-28 05:01:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655338890] [2024-11-28 05:01:22,457 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:22,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:01:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:22,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:01:22,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2024-11-28 05:01:22,458 INFO L87 Difference]: Start difference. First operand 491 states and 676 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:23,980 INFO L93 Difference]: Finished difference Result 927 states and 1278 transitions. [2024-11-28 05:01:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:01:23,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-11-28 05:01:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:23,985 INFO L225 Difference]: With dead ends: 927 [2024-11-28 05:01:23,985 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 05:01:23,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=92, Invalid=249, Unknown=1, NotChecked=0, Total=342 [2024-11-28 05:01:23,987 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 148 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:23,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 471 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:01:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 05:01:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 491. [2024-11-28 05:01:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 401 states have (on average 1.28428927680798) internal successors, (515), 405 states have internal predecessors, (515), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 675 transitions. [2024-11-28 05:01:24,051 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 675 transitions. Word has length 137 [2024-11-28 05:01:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:24,052 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 675 transitions. [2024-11-28 05:01:24,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 05:01:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 675 transitions. [2024-11-28 05:01:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:01:24,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:24,054 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:24,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:01:24,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:24,259 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:24,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash 339308277, now seen corresponding path program 1 times [2024-11-28 05:01:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:24,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183067829] [2024-11-28 05:01:24,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:26,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183067829] [2024-11-28 05:01:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183067829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:01:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154871508] [2024-11-28 05:01:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:01:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:26,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:01:26,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:01:26,402 INFO L87 Difference]: Start difference. First operand 491 states and 675 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:27,334 INFO L93 Difference]: Finished difference Result 1181 states and 1623 transitions. [2024-11-28 05:01:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:01:27,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-28 05:01:27,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:27,341 INFO L225 Difference]: With dead ends: 1181 [2024-11-28 05:01:27,341 INFO L226 Difference]: Without dead ends: 778 [2024-11-28 05:01:27,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:01:27,345 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 122 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:27,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 748 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:01:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-11-28 05:01:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 561. [2024-11-28 05:01:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 471 states have (on average 1.29723991507431) internal successors, (611), 475 states have internal predecessors, (611), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 771 transitions. [2024-11-28 05:01:27,466 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 771 transitions. Word has length 138 [2024-11-28 05:01:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:27,466 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 771 transitions. [2024-11-28 05:01:27,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 771 transitions. [2024-11-28 05:01:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:01:27,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:27,470 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:27,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:01:27,470 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:27,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1019366647, now seen corresponding path program 1 times [2024-11-28 05:01:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524423675] [2024-11-28 05:01:27,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524423675] [2024-11-28 05:01:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524423675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:27,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:01:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102390990] [2024-11-28 05:01:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:27,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:01:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:27,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:01:27,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:01:27,937 INFO L87 Difference]: Start difference. First operand 561 states and 771 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:28,358 INFO L93 Difference]: Finished difference Result 1094 states and 1511 transitions. [2024-11-28 05:01:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:28,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-28 05:01:28,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:28,363 INFO L225 Difference]: With dead ends: 1094 [2024-11-28 05:01:28,364 INFO L226 Difference]: Without dead ends: 624 [2024-11-28 05:01:28,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:01:28,366 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 137 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:28,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 371 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:01:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-28 05:01:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 561. [2024-11-28 05:01:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 471 states have (on average 1.2887473460721868) internal successors, (607), 475 states have internal predecessors, (607), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 767 transitions. [2024-11-28 05:01:28,453 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 767 transitions. Word has length 138 [2024-11-28 05:01:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:28,454 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 767 transitions. [2024-11-28 05:01:28,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 767 transitions. [2024-11-28 05:01:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:01:28,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:28,456 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:28,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:01:28,457 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:28,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1349635465, now seen corresponding path program 1 times [2024-11-28 05:01:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:28,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587617465] [2024-11-28 05:01:28,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587617465] [2024-11-28 05:01:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587617465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:01:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466862842] [2024-11-28 05:01:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:28,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:01:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:28,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:01:28,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:01:28,915 INFO L87 Difference]: Start difference. First operand 561 states and 767 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:29,383 INFO L93 Difference]: Finished difference Result 1088 states and 1501 transitions. [2024-11-28 05:01:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-28 05:01:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:29,387 INFO L225 Difference]: With dead ends: 1088 [2024-11-28 05:01:29,387 INFO L226 Difference]: Without dead ends: 618 [2024-11-28 05:01:29,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:01:29,389 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 109 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:29,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 409 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:01:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-28 05:01:29,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 564. [2024-11-28 05:01:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 474 states have (on average 1.2784810126582278) internal successors, (606), 478 states have internal predecessors, (606), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 05:01:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 766 transitions. [2024-11-28 05:01:29,468 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 766 transitions. Word has length 138 [2024-11-28 05:01:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:29,469 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 766 transitions. [2024-11-28 05:01:29,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 766 transitions. [2024-11-28 05:01:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:01:29,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:29,471 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:29,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:01:29,471 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:29,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -669577095, now seen corresponding path program 1 times [2024-11-28 05:01:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544271608] [2024-11-28 05:01:29,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:29,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544271608] [2024-11-28 05:01:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544271608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:30,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:30,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:01:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24348272] [2024-11-28 05:01:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:30,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:01:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:30,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:01:30,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:01:30,033 INFO L87 Difference]: Start difference. First operand 564 states and 766 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:30,507 INFO L93 Difference]: Finished difference Result 1152 states and 1564 transitions. [2024-11-28 05:01:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:01:30,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2024-11-28 05:01:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:30,514 INFO L225 Difference]: With dead ends: 1152 [2024-11-28 05:01:30,515 INFO L226 Difference]: Without dead ends: 687 [2024-11-28 05:01:30,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:01:30,518 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 109 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:30,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 782 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:01:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-28 05:01:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 476. [2024-11-28 05:01:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 398 states have (on average 1.2688442211055277) internal successors, (505), 399 states have internal predecessors, (505), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 641 transitions. [2024-11-28 05:01:30,608 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 641 transitions. Word has length 138 [2024-11-28 05:01:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:30,609 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 641 transitions. [2024-11-28 05:01:30,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 641 transitions. [2024-11-28 05:01:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 05:01:30,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:30,612 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:30,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:01:30,612 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:30,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1941985744, now seen corresponding path program 1 times [2024-11-28 05:01:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866772948] [2024-11-28 05:01:30,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866772948] [2024-11-28 05:01:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866772948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:01:30,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623720700] [2024-11-28 05:01:30,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:30,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:01:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:30,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:01:30,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:01:30,697 INFO L87 Difference]: Start difference. First operand 476 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:30,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:30,781 INFO L93 Difference]: Finished difference Result 861 states and 1173 transitions. [2024-11-28 05:01:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:01:30,782 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), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-11-28 05:01:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:30,788 INFO L225 Difference]: With dead ends: 861 [2024-11-28 05:01:30,788 INFO L226 Difference]: Without dead ends: 480 [2024-11-28 05:01:30,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:01:30,792 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:30,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:01:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-28 05:01:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2024-11-28 05:01:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 402 states have (on average 1.2661691542288558) internal successors, (509), 403 states have internal predecessors, (509), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 645 transitions. [2024-11-28 05:01:30,883 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 645 transitions. Word has length 140 [2024-11-28 05:01:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:30,884 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 645 transitions. [2024-11-28 05:01:30,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 645 transitions. [2024-11-28 05:01:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 05:01:30,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:30,887 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:30,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:01:30,888 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:30,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1543634926, now seen corresponding path program 1 times [2024-11-28 05:01:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:30,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869066923] [2024-11-28 05:01:30,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-28 05:01:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869066923] [2024-11-28 05:01:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869066923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539809527] [2024-11-28 05:01:31,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:31,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:31,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:31,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:01:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:31,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:01:31,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:31,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:01:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539809527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:31,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:31,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2024-11-28 05:01:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044328544] [2024-11-28 05:01:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:31,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:01:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:31,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:01:31,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:01:31,586 INFO L87 Difference]: Start difference. First operand 480 states and 645 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:31,704 INFO L93 Difference]: Finished difference Result 497 states and 664 transitions. [2024-11-28 05:01:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:01:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2024-11-28 05:01:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:31,711 INFO L225 Difference]: With dead ends: 497 [2024-11-28 05:01:31,711 INFO L226 Difference]: Without dead ends: 495 [2024-11-28 05:01:31,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:01:31,712 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:31,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:01:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-28 05:01:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-28 05:01:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 417 states have (on average 1.2565947242206235) internal successors, (524), 418 states have internal predecessors, (524), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 660 transitions. [2024-11-28 05:01:31,790 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 660 transitions. Word has length 140 [2024-11-28 05:01:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:31,790 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 660 transitions. [2024-11-28 05:01:31,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 660 transitions. [2024-11-28 05:01:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:01:31,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:31,793 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:31,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:01:31,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:31,995 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1924751351, now seen corresponding path program 1 times [2024-11-28 05:01:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087942692] [2024-11-28 05:01:31,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:31,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-28 05:01:32,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087942692] [2024-11-28 05:01:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087942692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245121467] [2024-11-28 05:01:32,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:32,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:32,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:32,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:01:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:32,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:01:32,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 05:01:32,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:01:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245121467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-28 05:01:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611515658] [2024-11-28 05:01:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:32,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:01:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:32,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:01:32,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:01:32,693 INFO L87 Difference]: Start difference. First operand 495 states and 660 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:32,820 INFO L93 Difference]: Finished difference Result 515 states and 682 transitions. [2024-11-28 05:01:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:01:32,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2024-11-28 05:01:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:32,824 INFO L225 Difference]: With dead ends: 515 [2024-11-28 05:01:32,824 INFO L226 Difference]: Without dead ends: 513 [2024-11-28 05:01:32,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:01:32,825 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:32,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 749 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:01:32,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-28 05:01:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 498. [2024-11-28 05:01:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 421 states have internal predecessors, (527), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 663 transitions. [2024-11-28 05:01:32,902 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 663 transitions. Word has length 142 [2024-11-28 05:01:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:32,902 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 663 transitions. [2024-11-28 05:01:32,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:32,903 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 663 transitions. [2024-11-28 05:01:32,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 05:01:32,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:32,907 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:32,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:01:33,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:01:33,108 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:33,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 746538535, now seen corresponding path program 1 times [2024-11-28 05:01:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002310940] [2024-11-28 05:01:33,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-28 05:01:33,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:33,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002310940] [2024-11-28 05:01:33,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002310940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:33,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:01:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106258402] [2024-11-28 05:01:33,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:33,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:01:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:33,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:01:33,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:33,487 INFO L87 Difference]: Start difference. First operand 498 states and 663 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:33,670 INFO L93 Difference]: Finished difference Result 814 states and 1094 transitions. [2024-11-28 05:01:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:01:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-28 05:01:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:33,674 INFO L225 Difference]: With dead ends: 814 [2024-11-28 05:01:33,674 INFO L226 Difference]: Without dead ends: 542 [2024-11-28 05:01:33,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:33,676 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 35 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:33,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 470 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:01:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-28 05:01:33,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 498. [2024-11-28 05:01:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 421 states have internal predecessors, (527), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 663 transitions. [2024-11-28 05:01:33,743 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 663 transitions. Word has length 268 [2024-11-28 05:01:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:33,744 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 663 transitions. [2024-11-28 05:01:33,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 663 transitions. [2024-11-28 05:01:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 05:01:33,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:33,748 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:33,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:01:33,748 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:33,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 324645603, now seen corresponding path program 1 times [2024-11-28 05:01:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677791835] [2024-11-28 05:01:33,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-28 05:01:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677791835] [2024-11-28 05:01:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677791835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:34,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:34,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:01:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336307860] [2024-11-28 05:01:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:34,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:01:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:34,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:01:34,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:34,103 INFO L87 Difference]: Start difference. First operand 498 states and 663 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:34,305 INFO L93 Difference]: Finished difference Result 814 states and 1094 transitions. [2024-11-28 05:01:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:01:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-28 05:01:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:34,312 INFO L225 Difference]: With dead ends: 814 [2024-11-28 05:01:34,312 INFO L226 Difference]: Without dead ends: 542 [2024-11-28 05:01:34,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:34,313 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 33 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:34,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 459 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:01:34,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-28 05:01:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 501. [2024-11-28 05:01:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 423 states have (on average 1.2529550827423168) internal successors, (530), 424 states have internal predecessors, (530), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 05:01:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 666 transitions. [2024-11-28 05:01:34,388 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 666 transitions. Word has length 268 [2024-11-28 05:01:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:34,389 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 666 transitions. [2024-11-28 05:01:34,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 666 transitions. [2024-11-28 05:01:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 05:01:34,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:34,394 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:34,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:01:34,395 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:34,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:34,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1004703973, now seen corresponding path program 1 times [2024-11-28 05:01:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697274069] [2024-11-28 05:01:34,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 2548 trivial. 0 not checked. [2024-11-28 05:01:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697274069] [2024-11-28 05:01:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697274069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249766664] [2024-11-28 05:01:35,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:35,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:35,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:35,437 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:35,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:01:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:35,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:01:35,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:38,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:38,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:01:38,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2024-11-28 05:01:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 744 refuted. 0 times theorem prover too weak. 1826 trivial. 0 not checked. [2024-11-28 05:01:38,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:38,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 05:01:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249766664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:38,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:01:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2024-11-28 05:01:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085453926] [2024-11-28 05:01:38,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:38,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:01:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:38,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:01:38,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:01:38,706 INFO L87 Difference]: Start difference. First operand 501 states and 666 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-11-28 05:01:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:39,304 INFO L93 Difference]: Finished difference Result 1142 states and 1527 transitions. [2024-11-28 05:01:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 268 [2024-11-28 05:01:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:39,310 INFO L225 Difference]: With dead ends: 1142 [2024-11-28 05:01:39,310 INFO L226 Difference]: Without dead ends: 737 [2024-11-28 05:01:39,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:01:39,313 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 194 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:39,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 516 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:01:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-28 05:01:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 732. [2024-11-28 05:01:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 612 states have (on average 1.238562091503268) internal successors, (758), 616 states have internal predecessors, (758), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:01:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 966 transitions. [2024-11-28 05:01:39,435 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 966 transitions. Word has length 268 [2024-11-28 05:01:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:39,436 INFO L471 AbstractCegarLoop]: Abstraction has 732 states and 966 transitions. [2024-11-28 05:01:39,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2024-11-28 05:01:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 966 transitions. [2024-11-28 05:01:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 05:01:39,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:39,439 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:39,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:01:39,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:39,644 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:39,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash -68381407, now seen corresponding path program 1 times [2024-11-28 05:01:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964756303] [2024-11-28 05:01:39,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-28 05:01:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:39,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964756303] [2024-11-28 05:01:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964756303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:01:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777704498] [2024-11-28 05:01:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:39,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:01:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:39,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:01:39,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:39,975 INFO L87 Difference]: Start difference. First operand 732 states and 966 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:40,227 INFO L93 Difference]: Finished difference Result 1157 states and 1533 transitions. [2024-11-28 05:01:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 268 [2024-11-28 05:01:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:40,236 INFO L225 Difference]: With dead ends: 1157 [2024-11-28 05:01:40,236 INFO L226 Difference]: Without dead ends: 725 [2024-11-28 05:01:40,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:01:40,239 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 31 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:40,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 591 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:01:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-28 05:01:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 720. [2024-11-28 05:01:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 600 states have (on average 1.2283333333333333) internal successors, (737), 604 states have internal predecessors, (737), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:01:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 945 transitions. [2024-11-28 05:01:40,345 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 945 transitions. Word has length 268 [2024-11-28 05:01:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:40,347 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 945 transitions. [2024-11-28 05:01:40,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 945 transitions. [2024-11-28 05:01:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 05:01:40,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:40,349 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:40,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:01:40,350 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:40,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 67570773, now seen corresponding path program 1 times [2024-11-28 05:01:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123497062] [2024-11-28 05:01:40,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-11-28 05:01:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123497062] [2024-11-28 05:01:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123497062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:40,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:01:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204673635] [2024-11-28 05:01:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:40,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:01:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:40,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:01:40,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:40,568 INFO L87 Difference]: Start difference. First operand 720 states and 945 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:40,747 INFO L93 Difference]: Finished difference Result 1433 states and 1876 transitions. [2024-11-28 05:01:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-11-28 05:01:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:40,752 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 05:01:40,753 INFO L226 Difference]: Without dead ends: 809 [2024-11-28 05:01:40,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:40,757 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 44 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:40,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 446 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:01:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-28 05:01:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 699. [2024-11-28 05:01:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 579 states have (on average 1.2158894645941278) internal successors, (704), 583 states have internal predecessors, (704), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:01:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 912 transitions. [2024-11-28 05:01:40,889 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 912 transitions. Word has length 270 [2024-11-28 05:01:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:40,890 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 912 transitions. [2024-11-28 05:01:40,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 912 transitions. [2024-11-28 05:01:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-28 05:01:40,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:40,894 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:40,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:01:40,895 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:40,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -354322159, now seen corresponding path program 1 times [2024-11-28 05:01:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752137280] [2024-11-28 05:01:40,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2024-11-28 05:01:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752137280] [2024-11-28 05:01:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752137280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:01:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593281825] [2024-11-28 05:01:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:41,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:01:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:41,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:01:41,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:41,115 INFO L87 Difference]: Start difference. First operand 699 states and 912 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:41,260 INFO L93 Difference]: Finished difference Result 1292 states and 1689 transitions. [2024-11-28 05:01:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:01:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2024-11-28 05:01:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:41,265 INFO L225 Difference]: With dead ends: 1292 [2024-11-28 05:01:41,265 INFO L226 Difference]: Without dead ends: 689 [2024-11-28 05:01:41,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:01:41,268 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 28 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:41,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 409 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:01:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-28 05:01:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 687. [2024-11-28 05:01:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 567 states have (on average 1.1957671957671958) internal successors, (678), 571 states have internal predecessors, (678), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:01:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 886 transitions. [2024-11-28 05:01:41,375 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 886 transitions. Word has length 270 [2024-11-28 05:01:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:41,376 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 886 transitions. [2024-11-28 05:01:41,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:01:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 886 transitions. [2024-11-28 05:01:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 05:01:41,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:41,378 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:41,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:01:41,378 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:41,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 539498296, now seen corresponding path program 1 times [2024-11-28 05:01:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615274300] [2024-11-28 05:01:41,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:01:41,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913245607] [2024-11-28 05:01:41,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:41,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:01:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:42,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 05:01:42,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:42,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-28 05:01:45,695 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 05:01:45,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 05:01:46,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:01:47,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:47,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:01:48,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:01:48,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:01:48,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:01:48,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2024-11-28 05:01:48,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:01:48,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-28 05:01:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 6 proven. 1634 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2024-11-28 05:01:48,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:48,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2024-11-28 05:01:48,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2024-11-28 05:01:58,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615274300] [2024-11-28 05:01:58,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:01:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913245607] [2024-11-28 05:01:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913245607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:58,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-28 05:01:58,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159216297] [2024-11-28 05:01:58,895 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:58,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:01:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:58,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:01:58,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=115, Unknown=2, NotChecked=0, Total=156 [2024-11-28 05:01:58,897 INFO L87 Difference]: Start difference. First operand 687 states and 886 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 05:01:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:59,613 INFO L93 Difference]: Finished difference Result 1422 states and 1828 transitions. [2024-11-28 05:01:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:01:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 271 [2024-11-28 05:01:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:59,618 INFO L225 Difference]: With dead ends: 1422 [2024-11-28 05:01:59,619 INFO L226 Difference]: Without dead ends: 831 [2024-11-28 05:01:59,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=69, Invalid=169, Unknown=2, NotChecked=0, Total=240 [2024-11-28 05:01:59,622 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 95 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:59,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 380 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:01:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-28 05:01:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 687. [2024-11-28 05:01:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 567 states have (on average 1.1746031746031746) internal successors, (666), 571 states have internal predecessors, (666), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:01:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 874 transitions. [2024-11-28 05:01:59,747 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 874 transitions. Word has length 271 [2024-11-28 05:01:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:59,748 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 874 transitions. [2024-11-28 05:01:59,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 05:01:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 874 transitions. [2024-11-28 05:01:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-28 05:01:59,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:59,751 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:59,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:01:59,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:59,952 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:59,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash -483096033, now seen corresponding path program 1 times [2024-11-28 05:01:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:59,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718306974] [2024-11-28 05:01:59,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:59,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-11-28 05:02:00,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:00,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718306974] [2024-11-28 05:02:00,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718306974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:00,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:00,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:02:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216827534] [2024-11-28 05:02:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:00,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:00,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:00,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:00,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:00,278 INFO L87 Difference]: Start difference. First operand 687 states and 874 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:00,540 INFO L93 Difference]: Finished difference Result 1178 states and 1494 transitions. [2024-11-28 05:02:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:02:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 271 [2024-11-28 05:02:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:00,545 INFO L225 Difference]: With dead ends: 1178 [2024-11-28 05:02:00,545 INFO L226 Difference]: Without dead ends: 782 [2024-11-28 05:02:00,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:02:00,548 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:00,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 515 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-28 05:02:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 672. [2024-11-28 05:02:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 552 states have (on average 1.1630434782608696) internal successors, (642), 556 states have internal predecessors, (642), 104 states have call successors, (104), 15 states have call predecessors, (104), 15 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 05:02:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 850 transitions. [2024-11-28 05:02:00,695 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 850 transitions. Word has length 271 [2024-11-28 05:02:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:00,696 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 850 transitions. [2024-11-28 05:02:00,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 850 transitions. [2024-11-28 05:02:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-28 05:02:00,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:00,699 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:00,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 05:02:00,700 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 680367868, now seen corresponding path program 1 times [2024-11-28 05:02:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572529406] [2024-11-28 05:02:00,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:02:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799345028] [2024-11-28 05:02:00,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:00,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:02:00,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:02:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:01,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 05:02:01,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:02:04,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:02:05,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 05:02:06,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 05:02:07,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 05:02:08,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 05:02:11,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:02:12,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:02:13,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 05:02:13,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:02:13,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:02:13,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:02:13,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 05:02:13,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:02:13,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-11-28 05:02:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 7 proven. 1762 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2024-11-28 05:02:13,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:02:13,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-11-28 05:02:26,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:26,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572529406] [2024-11-28 05:02:26,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:02:26,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799345028] [2024-11-28 05:02:26,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799345028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:02:26,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:02:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 05:02:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132059194] [2024-11-28 05:02:26,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:02:26,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:02:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:26,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:02:26,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=189, Unknown=3, NotChecked=0, Total=240 [2024-11-28 05:02:26,068 INFO L87 Difference]: Start difference. First operand 672 states and 850 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2024-11-28 05:02:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:27,795 INFO L93 Difference]: Finished difference Result 1644 states and 2060 transitions. [2024-11-28 05:02:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:02:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 272 [2024-11-28 05:02:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:27,802 INFO L225 Difference]: With dead ends: 1644 [2024-11-28 05:02:27,802 INFO L226 Difference]: Without dead ends: 1068 [2024-11-28 05:02:27,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=144, Invalid=405, Unknown=3, NotChecked=0, Total=552 [2024-11-28 05:02:27,805 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 321 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:27,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 535 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:02:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-28 05:02:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 800. [2024-11-28 05:02:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 660 states have (on average 1.1575757575757575) internal successors, (764), 666 states have internal predecessors, (764), 120 states have call successors, (120), 19 states have call predecessors, (120), 19 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-28 05:02:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1004 transitions. [2024-11-28 05:02:27,959 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1004 transitions. Word has length 272 [2024-11-28 05:02:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:27,960 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1004 transitions. [2024-11-28 05:02:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2024-11-28 05:02:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1004 transitions. [2024-11-28 05:02:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-28 05:02:27,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:27,963 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:27,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:02:28,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:02:28,167 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:28,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash 482079634, now seen corresponding path program 1 times [2024-11-28 05:02:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876982357] [2024-11-28 05:02:28,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2024-11-28 05:02:31,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876982357] [2024-11-28 05:02:31,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876982357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:02:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786427404] [2024-11-28 05:02:31,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:31,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:02:31,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:02:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:32,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 05:02:32,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:02:37,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:02:37,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-28 05:02:38,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:02:38,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:02:38,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 78 [2024-11-28 05:02:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 396 proven. 262 refuted. 0 times theorem prover too weak. 1921 trivial. 0 not checked. [2024-11-28 05:02:39,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:02:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786427404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:02:42,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:02:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26] total 37 [2024-11-28 05:02:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671425585] [2024-11-28 05:02:42,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:02:42,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 05:02:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:42,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 05:02:42,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:02:42,163 INFO L87 Difference]: Start difference. First operand 800 states and 1004 transitions. Second operand has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2024-11-28 05:02:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:49,363 INFO L93 Difference]: Finished difference Result 1142 states and 1398 transitions. [2024-11-28 05:02:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 05:02:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) Word has length 272 [2024-11-28 05:02:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:49,370 INFO L225 Difference]: With dead ends: 1142 [2024-11-28 05:02:49,370 INFO L226 Difference]: Without dead ends: 1140 [2024-11-28 05:02:49,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 276 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2253 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1839, Invalid=6351, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 05:02:49,373 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 582 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:49,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1659 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 05:02:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-28 05:02:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 780. [2024-11-28 05:02:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 660 states have (on average 1.1575757575757575) internal successors, (764), 664 states have internal predecessors, (764), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 952 transitions. [2024-11-28 05:02:49,575 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 952 transitions. Word has length 272 [2024-11-28 05:02:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:49,575 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 952 transitions. [2024-11-28 05:02:49,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (49), 6 states have call predecessors, (49), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2024-11-28 05:02:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 952 transitions. [2024-11-28 05:02:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-28 05:02:49,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:49,579 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:49,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:02:49,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 05:02:49,779 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:49,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1049038144, now seen corresponding path program 1 times [2024-11-28 05:02:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:49,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586725032] [2024-11-28 05:02:49,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-28 05:02:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:49,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586725032] [2024-11-28 05:02:49,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586725032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:49,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:49,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:02:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666989956] [2024-11-28 05:02:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:49,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:02:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:49,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:02:49,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:49,922 INFO L87 Difference]: Start difference. First operand 780 states and 952 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:50,175 INFO L93 Difference]: Finished difference Result 1464 states and 1788 transitions. [2024-11-28 05:02:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:02:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 274 [2024-11-28 05:02:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:50,179 INFO L225 Difference]: With dead ends: 1464 [2024-11-28 05:02:50,180 INFO L226 Difference]: Without dead ends: 800 [2024-11-28 05:02:50,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:50,182 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:50,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 182 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-28 05:02:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 752. [2024-11-28 05:02:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 632 states have (on average 1.1534810126582278) internal successors, (729), 636 states have internal predecessors, (729), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 917 transitions. [2024-11-28 05:02:50,416 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 917 transitions. Word has length 274 [2024-11-28 05:02:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:50,417 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 917 transitions. [2024-11-28 05:02:50,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 917 transitions. [2024-11-28 05:02:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-28 05:02:50,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:50,421 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:50,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 05:02:50,421 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:50,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:50,422 INFO L85 PathProgramCache]: Analyzing trace with hash -823590893, now seen corresponding path program 1 times [2024-11-28 05:02:50,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:50,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991607730] [2024-11-28 05:02:50,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:50,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2582 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-28 05:02:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991607730] [2024-11-28 05:02:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991607730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:50,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:50,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:02:50,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061764392] [2024-11-28 05:02:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:50,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:02:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:50,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:02:50,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:50,591 INFO L87 Difference]: Start difference. First operand 752 states and 917 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:50,869 INFO L93 Difference]: Finished difference Result 1077 states and 1318 transitions. [2024-11-28 05:02:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:02:50,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 277 [2024-11-28 05:02:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:50,872 INFO L225 Difference]: With dead ends: 1077 [2024-11-28 05:02:50,872 INFO L226 Difference]: Without dead ends: 772 [2024-11-28 05:02:50,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:50,873 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 20 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:50,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 222 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-28 05:02:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 752. [2024-11-28 05:02:51,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 632 states have (on average 1.1503164556962024) internal successors, (727), 636 states have internal predecessors, (727), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 915 transitions. [2024-11-28 05:02:51,054 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 915 transitions. Word has length 277 [2024-11-28 05:02:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:51,055 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 915 transitions. [2024-11-28 05:02:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 915 transitions. [2024-11-28 05:02:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-28 05:02:51,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:51,058 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:51,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 05:02:51,058 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:51,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash 837963173, now seen corresponding path program 1 times [2024-11-28 05:02:51,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:51,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324140984] [2024-11-28 05:02:51,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:51,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-11-28 05:02:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324140984] [2024-11-28 05:02:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324140984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076061159] [2024-11-28 05:02:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:51,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:02:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:51,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:02:51,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:02:51,550 INFO L87 Difference]: Start difference. First operand 752 states and 915 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:51,811 INFO L93 Difference]: Finished difference Result 1731 states and 2101 transitions. [2024-11-28 05:02:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:02:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-11-28 05:02:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:51,816 INFO L225 Difference]: With dead ends: 1731 [2024-11-28 05:02:51,816 INFO L226 Difference]: Without dead ends: 1091 [2024-11-28 05:02:51,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:51,818 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 34 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:51,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 424 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-11-28 05:02:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 983. [2024-11-28 05:02:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 863 states have (on average 1.1541135573580532) internal successors, (996), 867 states have internal predecessors, (996), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1184 transitions. [2024-11-28 05:02:52,024 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1184 transitions. Word has length 279 [2024-11-28 05:02:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:52,024 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1184 transitions. [2024-11-28 05:02:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:52,025 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1184 transitions. [2024-11-28 05:02:52,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-28 05:02:52,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:52,028 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:52,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 05:02:52,028 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:52,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 444936163, now seen corresponding path program 1 times [2024-11-28 05:02:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961018661] [2024-11-28 05:02:52,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2024-11-28 05:02:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961018661] [2024-11-28 05:02:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961018661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:52,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:52,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:52,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093941414] [2024-11-28 05:02:52,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:52,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:02:52,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:52,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:02:52,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:02:52,498 INFO L87 Difference]: Start difference. First operand 983 states and 1184 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:52,835 INFO L93 Difference]: Finished difference Result 2078 states and 2496 transitions. [2024-11-28 05:02:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:02:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 279 [2024-11-28 05:02:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:52,842 INFO L225 Difference]: With dead ends: 2078 [2024-11-28 05:02:52,843 INFO L226 Difference]: Without dead ends: 1253 [2024-11-28 05:02:52,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:52,846 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:52,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 324 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2024-11-28 05:02:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1164. [2024-11-28 05:02:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1044 states have (on average 1.1561302681992338) internal successors, (1207), 1048 states have internal predecessors, (1207), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1395 transitions. [2024-11-28 05:02:53,071 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1395 transitions. Word has length 279 [2024-11-28 05:02:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:53,076 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1395 transitions. [2024-11-28 05:02:53,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1395 transitions. [2024-11-28 05:02:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 05:02:53,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:53,080 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:53,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 05:02:53,081 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:53,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1001206121, now seen corresponding path program 1 times [2024-11-28 05:02:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235484785] [2024-11-28 05:02:53,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-11-28 05:02:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235484785] [2024-11-28 05:02:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235484785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:02:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902829333] [2024-11-28 05:02:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:53,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:02:53,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:53,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:02:53,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:53,198 INFO L87 Difference]: Start difference. First operand 1164 states and 1395 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:53,457 INFO L93 Difference]: Finished difference Result 2366 states and 2852 transitions. [2024-11-28 05:02:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:02:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-11-28 05:02:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:53,464 INFO L225 Difference]: With dead ends: 2366 [2024-11-28 05:02:53,464 INFO L226 Difference]: Without dead ends: 1374 [2024-11-28 05:02:53,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:02:53,467 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 26 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:53,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 235 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:02:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-11-28 05:02:53,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1256. [2024-11-28 05:02:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1136 states have (on average 1.1769366197183098) internal successors, (1337), 1140 states have internal predecessors, (1337), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1525 transitions. [2024-11-28 05:02:53,662 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1525 transitions. Word has length 280 [2024-11-28 05:02:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:53,663 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1525 transitions. [2024-11-28 05:02:53,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1525 transitions. [2024-11-28 05:02:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 05:02:53,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:53,666 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:53,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 05:02:53,666 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:53,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash 406843289, now seen corresponding path program 1 times [2024-11-28 05:02:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166205790] [2024-11-28 05:02:53,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2024-11-28 05:02:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166205790] [2024-11-28 05:02:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166205790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:54,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:54,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:02:54,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658169770] [2024-11-28 05:02:54,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:54,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:02:54,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:54,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:02:54,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:02:54,322 INFO L87 Difference]: Start difference. First operand 1256 states and 1525 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:54,868 INFO L93 Difference]: Finished difference Result 1296 states and 1567 transitions. [2024-11-28 05:02:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:02:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 280 [2024-11-28 05:02:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:54,874 INFO L225 Difference]: With dead ends: 1296 [2024-11-28 05:02:54,875 INFO L226 Difference]: Without dead ends: 1294 [2024-11-28 05:02:54,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:02:54,876 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 28 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:54,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 927 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:02:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2024-11-28 05:02:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1250. [2024-11-28 05:02:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1130 states have (on average 1.1778761061946903) internal successors, (1331), 1134 states have internal predecessors, (1331), 94 states have call successors, (94), 25 states have call predecessors, (94), 25 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-28 05:02:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1519 transitions. [2024-11-28 05:02:55,086 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1519 transitions. Word has length 280 [2024-11-28 05:02:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:55,087 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1519 transitions. [2024-11-28 05:02:55,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:02:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1519 transitions. [2024-11-28 05:02:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-28 05:02:55,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:55,093 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:55,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 05:02:55,093 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:55,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2069813408, now seen corresponding path program 1 times [2024-11-28 05:02:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732180266] [2024-11-28 05:02:55,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:55,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:02:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890528370] [2024-11-28 05:02:55,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:55,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:55,446 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:02:55,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:02:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:56,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 05:02:56,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:03:05,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:03:09,114 INFO L349 Elim1Store]: treesize reduction 40, result has 51.8 percent of original size [2024-11-28 05:03:09,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2024-11-28 05:03:13,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2024-11-28 05:03:22,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:03:22,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 318 treesize of output 1110 [2024-11-28 05:04:48,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:04:48,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 05:04:49,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:04:50,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:04:51,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:04:51,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:04:51,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:04:51,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 05:04:51,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:04:51,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-11-28 05:04:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5898 backedges. 14 proven. 3000 refuted. 0 times theorem prover too weak. 2884 trivial. 0 not checked. [2024-11-28 05:04:51,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:51,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-11-28 05:04:52,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-11-28 05:04:56,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732180266] [2024-11-28 05:04:56,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:04:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890528370] [2024-11-28 05:04:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890528370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:56,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:04:56,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-28 05:04:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794944508] [2024-11-28 05:04:56,319 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:56,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:04:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:56,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:04:56,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2024-11-28 05:04:56,320 INFO L87 Difference]: Start difference. First operand 1250 states and 1519 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 05:05:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:33,342 INFO L93 Difference]: Finished difference Result 3370 states and 4116 transitions. [2024-11-28 05:05:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:05:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 404 [2024-11-28 05:05:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:33,351 INFO L225 Difference]: With dead ends: 3370 [2024-11-28 05:05:33,351 INFO L226 Difference]: Without dead ends: 2706 [2024-11-28 05:05:33,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=259, Invalid=796, Unknown=1, NotChecked=0, Total=1056 [2024-11-28 05:05:33,353 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 755 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:33,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 799 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2024-11-28 05:05:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2024-11-28 05:05:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2086. [2024-11-28 05:05:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1868 states have (on average 1.1793361884368307) internal successors, (2203), 1876 states have internal predecessors, (2203), 170 states have call successors, (170), 47 states have call predecessors, (170), 47 states have return successors, (170), 162 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 05:05:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2543 transitions. [2024-11-28 05:05:34,025 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2543 transitions. Word has length 404 [2024-11-28 05:05:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:34,025 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 2543 transitions. [2024-11-28 05:05:34,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 12 states have internal predecessors, (122), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 05:05:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2543 transitions. [2024-11-28 05:05:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-28 05:05:34,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:34,033 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:34,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:05:34,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 05:05:34,233 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:05:34,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1132496864, now seen corresponding path program 2 times [2024-11-28 05:05:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:34,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677233825] [2024-11-28 05:05:34,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:34,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:34,673 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:34,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 05:05:34,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343693360] [2024-11-28 05:05:34,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:34,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:34,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:34,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:34,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:05:35,096 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:35,096 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:35,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:05:35,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:40,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:05:43,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-28 05:05:43,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:05:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:05:43,520 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:05:43,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 05:05:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5898 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 5866 trivial. 0 not checked. [2024-11-28 05:05:43,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:43,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2024-11-28 05:05:43,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-11-28 05:05:47,929 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 05:05:47,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 118 [2024-11-28 05:05:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677233825] [2024-11-28 05:05:53,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:05:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343693360] [2024-11-28 05:05:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343693360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:53,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:05:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-28 05:05:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294220895] [2024-11-28 05:05:53,587 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:53,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:53,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:53,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=98, Unknown=2, NotChecked=0, Total=132 [2024-11-28 05:05:53,589 INFO L87 Difference]: Start difference. First operand 2086 states and 2543 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:05:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:54,870 INFO L93 Difference]: Finished difference Result 3585 states and 4371 transitions. [2024-11-28 05:05:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:05:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 404 [2024-11-28 05:05:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:54,874 INFO L225 Difference]: With dead ends: 3585 [2024-11-28 05:05:54,874 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 05:05:54,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2024-11-28 05:05:54,879 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:54,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 238 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:05:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 05:05:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 05:05:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 05:05:54,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 404 [2024-11-28 05:05:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:54,881 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 05:05:54,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:05:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 05:05:54,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 05:05:54,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 05:05:54,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:05:55,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d513032-780a-41c0-8ae6-d7f0870f3bd0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 05:05:55,093 INFO L422 BasicCegarLoop]: Path program histogram: [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] [2024-11-28 05:05:55,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.