./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:04:35,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:04:35,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:04:35,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:04:35,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:04:35,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:04:35,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:04:35,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:04:35,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:04:35,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:04:35,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:04:35,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:04:35,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:04:35,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:04:35,602 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:04:35,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:04:35,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:04:35,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:04:35,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:04:35,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:04:35,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:04:35,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:04:35,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:04:35,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:04:35,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:04:35,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:04:35,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:04:35,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:04:35,606 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:04:35,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:04:35,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:04:35,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:04:35,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:04:35,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:04:35,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:04:35,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:04:35,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:04:35,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:04:35,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:04:35,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:04:35,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:04:35,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:04:35,610 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 [2024-11-16 09:04:35,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:04:35,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:04:35,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:04:35,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:04:35,897 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:04:35,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2024-11-16 09:04:37,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:04:37,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:04:37,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2024-11-16 09:04:38,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655b55efc/8b7973caf487470ab0f94be2c46902ac/FLAG84da308f5 [2024-11-16 09:04:38,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/655b55efc/8b7973caf487470ab0f94be2c46902ac [2024-11-16 09:04:38,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:04:38,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:04:38,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:04:38,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:04:38,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:04:38,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:04:38" (1/1) ... [2024-11-16 09:04:38,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e30f652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:38, skipping insertion in model container [2024-11-16 09:04:38,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:04:38" (1/1) ... [2024-11-16 09:04:38,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:04:39,739 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2024-11-16 09:04:39,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:04:39,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:04:39,954 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:04:40,721 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2024-11-16 09:04:40,729 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2024-11-16 09:04:40,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:04:40,802 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:04:40,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40 WrapperNode [2024-11-16 09:04:40,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:04:40,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:04:40,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:04:40,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:04:40,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:40,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,294 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12627 [2024-11-16 09:04:41,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:04:41,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:04:41,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:04:41,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:04:41,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,423 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:04:41,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:04:41,805 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:04:41,806 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:04:41,806 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:04:41,808 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (1/1) ... [2024-11-16 09:04:41,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:04:41,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:04:41,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:04:41,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:04:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:04:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 09:04:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 09:04:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 09:04:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 09:04:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:04:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:04:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 09:04:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 09:04:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 09:04:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 09:04:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:04:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 09:04:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 09:04:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:04:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:04:42,231 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:04:42,233 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:04:49,566 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2024-11-16 09:04:49,566 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2024-11-16 09:04:49,567 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2024-11-16 09:04:49,567 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2024-11-16 09:04:49,567 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2024-11-16 09:04:49,567 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2024-11-16 09:04:49,568 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2024-11-16 09:04:49,818 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-16 09:04:49,819 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:04:49,885 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:04:49,886 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:04:49,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:04:49 BoogieIcfgContainer [2024-11-16 09:04:49,886 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:04:49,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:04:49,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:04:49,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:04:49,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:04:38" (1/3) ... [2024-11-16 09:04:49,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6731b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:04:49, skipping insertion in model container [2024-11-16 09:04:49,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:04:40" (2/3) ... [2024-11-16 09:04:49,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6731b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:04:49, skipping insertion in model container [2024-11-16 09:04:49,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:04:49" (3/3) ... [2024-11-16 09:04:49,896 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.02.cil-1.c [2024-11-16 09:04:49,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:04:49,919 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:04:50,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:04:50,056 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;@7e0fff07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:04:50,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:04:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 2341 states, 2316 states have (on average 1.8475820379965457) internal successors, (4279), 2319 states have internal predecessors, (4279), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 09:04:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:50,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:50,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:50,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:50,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash -584040896, now seen corresponding path program 1 times [2024-11-16 09:04:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948928401] [2024-11-16 09:04:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:50,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948928401] [2024-11-16 09:04:50,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948928401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:50,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:04:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309146051] [2024-11-16 09:04:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:50,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:04:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:04:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:04:50,776 INFO L87 Difference]: Start difference. First operand has 2341 states, 2316 states have (on average 1.8475820379965457) internal successors, (4279), 2319 states have internal predecessors, (4279), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:51,608 INFO L93 Difference]: Finished difference Result 4703 states and 8667 transitions. [2024-11-16 09:04:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:04:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:51,636 INFO L225 Difference]: With dead ends: 4703 [2024-11-16 09:04:51,637 INFO L226 Difference]: Without dead ends: 2306 [2024-11-16 09:04:51,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:04:51,650 INFO L432 NwaCegarLoop]: 4146 mSDtfsCounter, 4396 mSDsluCounter, 12367 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:51,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4406 Valid, 16513 Invalid, 512 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [59 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:04:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-11-16 09:04:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2268. [2024-11-16 09:04:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2244 states have (on average 1.840463458110517) internal successors, (4130), 2246 states have internal predecessors, (4130), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 09:04:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 4162 transitions. [2024-11-16 09:04:51,801 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 4162 transitions. Word has length 73 [2024-11-16 09:04:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:51,802 INFO L471 AbstractCegarLoop]: Abstraction has 2268 states and 4162 transitions. [2024-11-16 09:04:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 4162 transitions. [2024-11-16 09:04:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:51,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:51,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:51,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:04:51,809 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:51,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:51,810 INFO L85 PathProgramCache]: Analyzing trace with hash -303691007, now seen corresponding path program 1 times [2024-11-16 09:04:51,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:51,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907064168] [2024-11-16 09:04:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:51,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:51,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:51,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:52,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:52,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:52,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907064168] [2024-11-16 09:04:52,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907064168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:52,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:52,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:04:52,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405254475] [2024-11-16 09:04:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:52,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:04:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:04:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:04:52,056 INFO L87 Difference]: Start difference. First operand 2268 states and 4162 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:53,270 INFO L93 Difference]: Finished difference Result 2603 states and 4651 transitions. [2024-11-16 09:04:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:04:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:53,285 INFO L225 Difference]: With dead ends: 2603 [2024-11-16 09:04:53,286 INFO L226 Difference]: Without dead ends: 2468 [2024-11-16 09:04:53,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:04:53,289 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4360 mSDsluCounter, 16599 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 20788 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:53,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 20788 Invalid, 1031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:04:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2024-11-16 09:04:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2404. [2024-11-16 09:04:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2359 states have (on average 1.8194150063586265) internal successors, (4292), 2363 states have internal predecessors, (4292), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2024-11-16 09:04:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4357 transitions. [2024-11-16 09:04:53,377 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4357 transitions. Word has length 73 [2024-11-16 09:04:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:53,377 INFO L471 AbstractCegarLoop]: Abstraction has 2404 states and 4357 transitions. [2024-11-16 09:04:53,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4357 transitions. [2024-11-16 09:04:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:53,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:53,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:53,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:04:53,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:53,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2060657184, now seen corresponding path program 1 times [2024-11-16 09:04:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525166942] [2024-11-16 09:04:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:53,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525166942] [2024-11-16 09:04:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525166942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:04:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27343392] [2024-11-16 09:04:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:53,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:04:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:04:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:04:53,575 INFO L87 Difference]: Start difference. First operand 2404 states and 4357 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:54,674 INFO L93 Difference]: Finished difference Result 3110 states and 5374 transitions. [2024-11-16 09:04:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:04:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:54,689 INFO L225 Difference]: With dead ends: 3110 [2024-11-16 09:04:54,689 INFO L226 Difference]: Without dead ends: 2841 [2024-11-16 09:04:54,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:04:54,693 INFO L432 NwaCegarLoop]: 4161 mSDtfsCounter, 4462 mSDsluCounter, 16539 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4474 SdHoareTripleChecker+Valid, 20700 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:54,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4474 Valid, 20700 Invalid, 969 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:04:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2024-11-16 09:04:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2651. [2024-11-16 09:04:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2572 states have (on average 1.7842146189735615) internal successors, (4589), 2578 states have internal predecessors, (4589), 49 states have call successors, (49), 24 states have call predecessors, (49), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:04:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4704 transitions. [2024-11-16 09:04:54,780 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4704 transitions. Word has length 73 [2024-11-16 09:04:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:54,780 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4704 transitions. [2024-11-16 09:04:54,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4704 transitions. [2024-11-16 09:04:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:54,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:54,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:54,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:04:54,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:54,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1603851487, now seen corresponding path program 1 times [2024-11-16 09:04:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65924379] [2024-11-16 09:04:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65924379] [2024-11-16 09:04:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65924379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:04:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162680087] [2024-11-16 09:04:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:54,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:04:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:54,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:04:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:04:54,900 INFO L87 Difference]: Start difference. First operand 2651 states and 4704 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:55,387 INFO L93 Difference]: Finished difference Result 3274 states and 5611 transitions. [2024-11-16 09:04:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:04:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:55,404 INFO L225 Difference]: With dead ends: 3274 [2024-11-16 09:04:55,405 INFO L226 Difference]: Without dead ends: 2756 [2024-11-16 09:04:55,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:04:55,414 INFO L432 NwaCegarLoop]: 4077 mSDtfsCounter, 4326 mSDsluCounter, 12161 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 16238 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:55,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 16238 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:04:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2024-11-16 09:04:55,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2651. [2024-11-16 09:04:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2572 states have (on average 1.7822706065318819) internal successors, (4584), 2578 states have internal predecessors, (4584), 49 states have call successors, (49), 24 states have call predecessors, (49), 28 states have return successors, (66), 52 states have call predecessors, (66), 49 states have call successors, (66) [2024-11-16 09:04:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4699 transitions. [2024-11-16 09:04:55,507 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4699 transitions. Word has length 73 [2024-11-16 09:04:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:55,508 INFO L471 AbstractCegarLoop]: Abstraction has 2651 states and 4699 transitions. [2024-11-16 09:04:55,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4699 transitions. [2024-11-16 09:04:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:55,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:55,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:55,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:04:55,511 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:55,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1583514112, now seen corresponding path program 1 times [2024-11-16 09:04:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720989996] [2024-11-16 09:04:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:55,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:55,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720989996] [2024-11-16 09:04:55,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720989996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:55,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:04:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862030535] [2024-11-16 09:04:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:55,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:04:55,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:04:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:04:55,657 INFO L87 Difference]: Start difference. First operand 2651 states and 4699 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:56,723 INFO L93 Difference]: Finished difference Result 3907 states and 6480 transitions. [2024-11-16 09:04:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:04:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:56,741 INFO L225 Difference]: With dead ends: 3907 [2024-11-16 09:04:56,741 INFO L226 Difference]: Without dead ends: 3391 [2024-11-16 09:04:56,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:04:56,747 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4376 mSDsluCounter, 16552 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4388 SdHoareTripleChecker+Valid, 20721 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:56,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4388 Valid, 20721 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:04:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2024-11-16 09:04:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3145. [2024-11-16 09:04:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3000 states have (on average 1.7256666666666667) internal successors, (5177), 3010 states have internal predecessors, (5177), 87 states have call successors, (87), 48 states have call predecessors, (87), 56 states have return successors, (130), 94 states have call predecessors, (130), 87 states have call successors, (130) [2024-11-16 09:04:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5394 transitions. [2024-11-16 09:04:56,860 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5394 transitions. Word has length 73 [2024-11-16 09:04:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:56,860 INFO L471 AbstractCegarLoop]: Abstraction has 3145 states and 5394 transitions. [2024-11-16 09:04:56,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5394 transitions. [2024-11-16 09:04:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:04:56,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:56,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:56,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:04:56,864 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:56,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash -890121407, now seen corresponding path program 1 times [2024-11-16 09:04:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:56,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707428796] [2024-11-16 09:04:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:04:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707428796] [2024-11-16 09:04:56,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707428796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:56,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:04:56,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:04:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137436448] [2024-11-16 09:04:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:56,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:04:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:04:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:04:56,949 INFO L87 Difference]: Start difference. First operand 3145 states and 5394 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:57,865 INFO L93 Difference]: Finished difference Result 5454 states and 8662 transitions. [2024-11-16 09:04:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:04:57,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2024-11-16 09:04:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:57,886 INFO L225 Difference]: With dead ends: 5454 [2024-11-16 09:04:57,886 INFO L226 Difference]: Without dead ends: 4444 [2024-11-16 09:04:57,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 09:04:57,893 INFO L432 NwaCegarLoop]: 4207 mSDtfsCounter, 4520 mSDsluCounter, 12347 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 16554 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:57,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4545 Valid, 16554 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:04:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2024-11-16 09:04:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4094. [2024-11-16 09:04:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 3812 states have (on average 1.6466421825813222) internal successors, (6277), 3838 states have internal predecessors, (6277), 168 states have call successors, (168), 96 states have call predecessors, (168), 112 states have return successors, (245), 167 states have call predecessors, (245), 168 states have call successors, (245) [2024-11-16 09:04:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6690 transitions. [2024-11-16 09:04:58,057 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6690 transitions. Word has length 73 [2024-11-16 09:04:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:58,057 INFO L471 AbstractCegarLoop]: Abstraction has 4094 states and 6690 transitions. [2024-11-16 09:04:58,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 09:04:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6690 transitions. [2024-11-16 09:04:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:04:58,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:58,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:58,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:04:58,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:58,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1926138167, now seen corresponding path program 1 times [2024-11-16 09:04:58,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014587564] [2024-11-16 09:04:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:04:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:04:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:04:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:04:58,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:58,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014587564] [2024-11-16 09:04:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014587564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:04:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616251377] [2024-11-16 09:04:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:58,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:04:58,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:04:58,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:04:58,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:04:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:58,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:04:58,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:04:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:04:58,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:04:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616251377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:58,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:04:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:04:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992996633] [2024-11-16 09:04:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:58,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:04:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:04:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:04:58,446 INFO L87 Difference]: Start difference. First operand 4094 states and 6690 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:04:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:58,747 INFO L93 Difference]: Finished difference Result 7938 states and 12062 transitions. [2024-11-16 09:04:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:04:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2024-11-16 09:04:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:04:58,785 INFO L225 Difference]: With dead ends: 7938 [2024-11-16 09:04:58,785 INFO L226 Difference]: Without dead ends: 5979 [2024-11-16 09:04:58,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:04:58,794 INFO L432 NwaCegarLoop]: 4157 mSDtfsCounter, 4115 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:04:58,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4115 Valid, 4332 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:04:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2024-11-16 09:04:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 5912. [2024-11-16 09:04:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 5364 states have (on average 1.5669276659209546) internal successors, (8405), 5414 states have internal predecessors, (8405), 322 states have call successors, (322), 192 states have call predecessors, (322), 224 states have return successors, (467), 313 states have call predecessors, (467), 322 states have call successors, (467) [2024-11-16 09:04:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9194 transitions. [2024-11-16 09:04:59,063 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 9194 transitions. Word has length 121 [2024-11-16 09:04:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:04:59,063 INFO L471 AbstractCegarLoop]: Abstraction has 5912 states and 9194 transitions. [2024-11-16 09:04:59,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:04:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 9194 transitions. [2024-11-16 09:04:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:04:59,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:04:59,072 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:04:59,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:04:59,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:04:59,277 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:04:59,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:04:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1979237135, now seen corresponding path program 1 times [2024-11-16 09:04:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:04:59,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872507114] [2024-11-16 09:04:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:04:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:04:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:04:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:04:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:04:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:04:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:04:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:04:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:04:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:04:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:04:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872507114] [2024-11-16 09:04:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872507114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:04:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976782934] [2024-11-16 09:04:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:04:59,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:04:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:04:59,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:04:59,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:04:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:04:59,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:04:59,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:04:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:04:59,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:04:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976782934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:04:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:04:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-16 09:04:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608659953] [2024-11-16 09:04:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:04:59,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:04:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:04:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:04:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:04:59,607 INFO L87 Difference]: Start difference. First operand 5912 states and 9194 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:04:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:04:59,994 INFO L93 Difference]: Finished difference Result 13320 states and 19528 transitions. [2024-11-16 09:04:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:04:59,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2024-11-16 09:04:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:00,033 INFO L225 Difference]: With dead ends: 13320 [2024-11-16 09:05:00,033 INFO L226 Difference]: Without dead ends: 9543 [2024-11-16 09:05:00,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:00,049 INFO L432 NwaCegarLoop]: 4157 mSDtfsCounter, 4121 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4121 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:00,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4121 Valid, 4332 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2024-11-16 09:05:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 9412. [2024-11-16 09:05:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9412 states, 8340 states have (on average 1.4970023980815348) internal successors, (12485), 8438 states have internal predecessors, (12485), 622 states have call successors, (622), 384 states have call predecessors, (622), 448 states have return successors, (903), 597 states have call predecessors, (903), 622 states have call successors, (903) [2024-11-16 09:05:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9412 states to 9412 states and 14010 transitions. [2024-11-16 09:05:00,645 INFO L78 Accepts]: Start accepts. Automaton has 9412 states and 14010 transitions. Word has length 121 [2024-11-16 09:05:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:00,645 INFO L471 AbstractCegarLoop]: Abstraction has 9412 states and 14010 transitions. [2024-11-16 09:05:00,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:05:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9412 states and 14010 transitions. [2024-11-16 09:05:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 09:05:00,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:00,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:00,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:05:00,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 09:05:00,860 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:00,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1040925397, now seen corresponding path program 1 times [2024-11-16 09:05:00,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696510005] [2024-11-16 09:05:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:05:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:00,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-16 09:05:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 09:05:01,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696510005] [2024-11-16 09:05:01,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696510005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078681899] [2024-11-16 09:05:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:01,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:01,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:01,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:01,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:05:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:01,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:01,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:05:01,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078681899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184529110] [2024-11-16 09:05:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:01,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:01,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:01,144 INFO L87 Difference]: Start difference. First operand 9412 states and 14010 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:05:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:02,198 INFO L93 Difference]: Finished difference Result 23187 states and 33422 transitions. [2024-11-16 09:05:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2024-11-16 09:05:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:02,273 INFO L225 Difference]: With dead ends: 23187 [2024-11-16 09:05:02,273 INFO L226 Difference]: Without dead ends: 15912 [2024-11-16 09:05:02,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:02,306 INFO L432 NwaCegarLoop]: 4325 mSDtfsCounter, 162 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 8479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:02,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 8479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15912 states. [2024-11-16 09:05:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15912 to 15912. [2024-11-16 09:05:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 13907 states have (on average 1.4454591213058172) internal successors, (20102), 14070 states have internal predecessors, (20102), 1143 states have call successors, (1143), 732 states have call predecessors, (1143), 860 states have return successors, (1839), 1125 states have call predecessors, (1839), 1143 states have call successors, (1839) [2024-11-16 09:05:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 23084 transitions. [2024-11-16 09:05:03,574 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 23084 transitions. Word has length 121 [2024-11-16 09:05:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:03,575 INFO L471 AbstractCegarLoop]: Abstraction has 15912 states and 23084 transitions. [2024-11-16 09:05:03,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-16 09:05:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 23084 transitions. [2024-11-16 09:05:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:05:03,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:03,616 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:03,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:05:03,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:03,822 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:03,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 642469031, now seen corresponding path program 1 times [2024-11-16 09:05:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9958770] [2024-11-16 09:05:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:05:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:05:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:05:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:05:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:05:03,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:03,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9958770] [2024-11-16 09:05:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9958770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:03,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340390041] [2024-11-16 09:05:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:03,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:03,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:03,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:05:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:04,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:04,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 09:05:04,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:04,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340390041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:04,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114840617] [2024-11-16 09:05:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:04,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:04,229 INFO L87 Difference]: Start difference. First operand 15912 states and 23084 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:04,986 INFO L93 Difference]: Finished difference Result 24755 states and 35752 transitions. [2024-11-16 09:05:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 179 [2024-11-16 09:05:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:05,046 INFO L225 Difference]: With dead ends: 24755 [2024-11-16 09:05:05,046 INFO L226 Difference]: Without dead ends: 14220 [2024-11-16 09:05:05,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:05,079 INFO L432 NwaCegarLoop]: 4154 mSDtfsCounter, 4082 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:05,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 4188 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14220 states. [2024-11-16 09:05:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 14156. [2024-11-16 09:05:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14156 states, 12443 states have (on average 1.4226472715583058) internal successors, (17702), 12568 states have internal predecessors, (17702), 965 states have call successors, (965), 650 states have call predecessors, (965), 746 states have return successors, (1467), 947 states have call predecessors, (1467), 965 states have call successors, (1467) [2024-11-16 09:05:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14156 states to 14156 states and 20134 transitions. [2024-11-16 09:05:05,815 INFO L78 Accepts]: Start accepts. Automaton has 14156 states and 20134 transitions. Word has length 179 [2024-11-16 09:05:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:05,816 INFO L471 AbstractCegarLoop]: Abstraction has 14156 states and 20134 transitions. [2024-11-16 09:05:05,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 14156 states and 20134 transitions. [2024-11-16 09:05:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:05:05,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:05,848 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:05,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 09:05:06,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:06,049 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:06,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2146871685, now seen corresponding path program 1 times [2024-11-16 09:05:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809526103] [2024-11-16 09:05:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:05:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:05:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:05:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:05:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:05:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809526103] [2024-11-16 09:05:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809526103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396197602] [2024-11-16 09:05:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:06,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:06,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:05:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:06,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:06,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 09:05:06,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396197602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:06,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:06,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129010551] [2024-11-16 09:05:06,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:06,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:06,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:06,355 INFO L87 Difference]: Start difference. First operand 14156 states and 20134 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:07,044 INFO L93 Difference]: Finished difference Result 27333 states and 38190 transitions. [2024-11-16 09:05:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 179 [2024-11-16 09:05:07,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:07,106 INFO L225 Difference]: With dead ends: 27333 [2024-11-16 09:05:07,107 INFO L226 Difference]: Without dead ends: 15322 [2024-11-16 09:05:07,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:07,144 INFO L432 NwaCegarLoop]: 4158 mSDtfsCounter, 4132 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:07,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4132 Valid, 4191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2024-11-16 09:05:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 15322. [2024-11-16 09:05:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15322 states, 13529 states have (on average 1.3909379850691108) internal successors, (18818), 13654 states have internal predecessors, (18818), 979 states have call successors, (979), 716 states have call predecessors, (979), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:05:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 21278 transitions. [2024-11-16 09:05:07,930 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 21278 transitions. Word has length 179 [2024-11-16 09:05:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:07,931 INFO L471 AbstractCegarLoop]: Abstraction has 15322 states and 21278 transitions. [2024-11-16 09:05:07,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 21278 transitions. [2024-11-16 09:05:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-16 09:05:07,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:07,967 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:07,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:05:08,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 09:05:08,168 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:08,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1991707905, now seen corresponding path program 1 times [2024-11-16 09:05:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552263104] [2024-11-16 09:05:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:08,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-16 09:05:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-16 09:05:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-16 09:05:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-16 09:05:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 09:05:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552263104] [2024-11-16 09:05:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552263104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394907681] [2024-11-16 09:05:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:08,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:08,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:08,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:05:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:08,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:05:08,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 09:05:08,587 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394907681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785621948] [2024-11-16 09:05:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:08,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:08,590 INFO L87 Difference]: Start difference. First operand 15322 states and 21278 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:09,657 INFO L93 Difference]: Finished difference Result 26504 states and 35916 transitions. [2024-11-16 09:05:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 179 [2024-11-16 09:05:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:09,730 INFO L225 Difference]: With dead ends: 26504 [2024-11-16 09:05:09,731 INFO L226 Difference]: Without dead ends: 16134 [2024-11-16 09:05:09,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:09,762 INFO L432 NwaCegarLoop]: 4196 mSDtfsCounter, 4093 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:09,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4376 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2024-11-16 09:05:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 15218. [2024-11-16 09:05:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15218 states, 13425 states have (on average 1.3784729981378026) internal successors, (18506), 13550 states have internal predecessors, (18506), 979 states have call successors, (979), 716 states have call predecessors, (979), 812 states have return successors, (1481), 961 states have call predecessors, (1481), 979 states have call successors, (1481) [2024-11-16 09:05:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15218 states to 15218 states and 20966 transitions. [2024-11-16 09:05:10,670 INFO L78 Accepts]: Start accepts. Automaton has 15218 states and 20966 transitions. Word has length 179 [2024-11-16 09:05:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:10,671 INFO L471 AbstractCegarLoop]: Abstraction has 15218 states and 20966 transitions. [2024-11-16 09:05:10,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15218 states and 20966 transitions. [2024-11-16 09:05:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:05:10,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:10,693 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:10,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 09:05:10,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:10,895 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:10,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -426914675, now seen corresponding path program 1 times [2024-11-16 09:05:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455832485] [2024-11-16 09:05:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:10,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:10,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:10,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:05:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:05:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-11-16 09:05:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:05:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-16 09:05:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455832485] [2024-11-16 09:05:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455832485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617645398] [2024-11-16 09:05:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:11,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:11,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:11,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:11,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 09:05:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:11,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:11,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-16 09:05:11,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:11,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617645398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:11,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:11,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989046570] [2024-11-16 09:05:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:11,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:11,177 INFO L87 Difference]: Start difference. First operand 15218 states and 20966 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:05:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:12,261 INFO L93 Difference]: Finished difference Result 40534 states and 54296 transitions. [2024-11-16 09:05:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:12,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 180 [2024-11-16 09:05:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:12,369 INFO L225 Difference]: With dead ends: 40534 [2024-11-16 09:05:12,369 INFO L226 Difference]: Without dead ends: 27461 [2024-11-16 09:05:12,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:12,415 INFO L432 NwaCegarLoop]: 4323 mSDtfsCounter, 159 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 8472 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:12,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 8472 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27461 states. [2024-11-16 09:05:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27461 to 27458. [2024-11-16 09:05:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27458 states, 23959 states have (on average 1.3299386451855253) internal successors, (31864), 24208 states have internal predecessors, (31864), 1901 states have call successors, (1901), 1404 states have call predecessors, (1901), 1596 states have return successors, (3263), 1865 states have call predecessors, (3263), 1901 states have call successors, (3263) [2024-11-16 09:05:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27458 states to 27458 states and 37028 transitions. [2024-11-16 09:05:13,848 INFO L78 Accepts]: Start accepts. Automaton has 27458 states and 37028 transitions. Word has length 180 [2024-11-16 09:05:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:13,849 INFO L471 AbstractCegarLoop]: Abstraction has 27458 states and 37028 transitions. [2024-11-16 09:05:13,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:05:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 27458 states and 37028 transitions. [2024-11-16 09:05:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:05:13,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:13,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:13,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 09:05:14,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:14,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:14,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2124510569, now seen corresponding path program 1 times [2024-11-16 09:05:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862703723] [2024-11-16 09:05:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:05:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:05:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:05:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:05:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 09:05:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862703723] [2024-11-16 09:05:14,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862703723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695395742] [2024-11-16 09:05:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:14,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:14,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 09:05:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:14,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:14,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 09:05:14,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695395742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543399688] [2024-11-16 09:05:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:14,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:14,472 INFO L87 Difference]: Start difference. First operand 27458 states and 37028 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:15,517 INFO L93 Difference]: Finished difference Result 45535 states and 61775 transitions. [2024-11-16 09:05:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:15,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 180 [2024-11-16 09:05:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:15,602 INFO L225 Difference]: With dead ends: 45535 [2024-11-16 09:05:15,602 INFO L226 Difference]: Without dead ends: 23556 [2024-11-16 09:05:15,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:15,645 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4075 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:15,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4181 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23556 states. [2024-11-16 09:05:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 23268. [2024-11-16 09:05:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23268 states, 20397 states have (on average 1.3086238172280238) internal successors, (26692), 20572 states have internal predecessors, (26692), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1304 states have return successors, (2557), 1531 states have call predecessors, (2557), 1565 states have call successors, (2557) [2024-11-16 09:05:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23268 states to 23268 states and 30814 transitions. [2024-11-16 09:05:17,069 INFO L78 Accepts]: Start accepts. Automaton has 23268 states and 30814 transitions. Word has length 180 [2024-11-16 09:05:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:17,070 INFO L471 AbstractCegarLoop]: Abstraction has 23268 states and 30814 transitions. [2024-11-16 09:05:17,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-16 09:05:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 23268 states and 30814 transitions. [2024-11-16 09:05:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-16 09:05:17,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:17,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:17,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 09:05:17,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 09:05:17,304 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:17,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1943417163, now seen corresponding path program 1 times [2024-11-16 09:05:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:17,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766805073] [2024-11-16 09:05:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 09:05:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 09:05:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:05:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 09:05:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 09:05:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766805073] [2024-11-16 09:05:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766805073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675274939] [2024-11-16 09:05:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:17,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:17,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:17,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 09:05:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:17,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 09:05:17,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:05:17,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:17,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675274939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:17,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:17,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072396128] [2024-11-16 09:05:17,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:17,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:17,630 INFO L87 Difference]: Start difference. First operand 23268 states and 30814 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:05:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:19,956 INFO L93 Difference]: Finished difference Result 62746 states and 81812 transitions. [2024-11-16 09:05:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 180 [2024-11-16 09:05:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:20,176 INFO L225 Difference]: With dead ends: 62746 [2024-11-16 09:05:20,176 INFO L226 Difference]: Without dead ends: 41637 [2024-11-16 09:05:20,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:20,252 INFO L432 NwaCegarLoop]: 4314 mSDtfsCounter, 146 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:20,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8458 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41637 states. [2024-11-16 09:05:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41637 to 41634. [2024-11-16 09:05:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 36119 states have (on average 1.2696918519338851) internal successors, (45860), 36468 states have internal predecessors, (45860), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:05:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54542 transitions. [2024-11-16 09:05:22,694 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54542 transitions. Word has length 180 [2024-11-16 09:05:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:22,695 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54542 transitions. [2024-11-16 09:05:22,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-16 09:05:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54542 transitions. [2024-11-16 09:05:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:05:22,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:22,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:22,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 09:05:22,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 09:05:22,938 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:22,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2129322849, now seen corresponding path program 1 times [2024-11-16 09:05:22,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:22,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256726567] [2024-11-16 09:05:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:22,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:05:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:05:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:05:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:05:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 09:05:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256726567] [2024-11-16 09:05:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256726567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10086879] [2024-11-16 09:05:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:23,103 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:23,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 09:05:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:23,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:05:23,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 09:05:23,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10086879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:23,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923061902] [2024-11-16 09:05:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:23,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:23,286 INFO L87 Difference]: Start difference. First operand 41634 states and 54542 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:25,828 INFO L93 Difference]: Finished difference Result 74526 states and 96784 transitions. [2024-11-16 09:05:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 181 [2024-11-16 09:05:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:25,976 INFO L225 Difference]: With dead ends: 74526 [2024-11-16 09:05:25,976 INFO L226 Difference]: Without dead ends: 42085 [2024-11-16 09:05:26,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:26,037 INFO L432 NwaCegarLoop]: 4171 mSDtfsCounter, 4100 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:26,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42085 states. [2024-11-16 09:05:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42085 to 41634. [2024-11-16 09:05:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 36119 states have (on average 1.26271491458789) internal successors, (45608), 36468 states have internal predecessors, (45608), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:05:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 54290 transitions. [2024-11-16 09:05:28,985 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 54290 transitions. Word has length 181 [2024-11-16 09:05:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:28,986 INFO L471 AbstractCegarLoop]: Abstraction has 41634 states and 54290 transitions. [2024-11-16 09:05:28,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 54290 transitions. [2024-11-16 09:05:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:05:29,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:29,035 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:29,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 09:05:29,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 09:05:29,236 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:29,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 275329689, now seen corresponding path program 1 times [2024-11-16 09:05:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553638828] [2024-11-16 09:05:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:05:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:05:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-16 09:05:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:05:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-16 09:05:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553638828] [2024-11-16 09:05:29,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553638828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:05:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762204449] [2024-11-16 09:05:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:29,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:05:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:05:29,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:05:29,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 09:05:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:29,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 09:05:29,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:05:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 09:05:29,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 09:05:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762204449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:29,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 09:05:29,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 09:05:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992909539] [2024-11-16 09:05:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:29,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:05:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:05:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:29,543 INFO L87 Difference]: Start difference. First operand 41634 states and 54290 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:05:31,681 INFO L93 Difference]: Finished difference Result 74810 states and 96746 transitions. [2024-11-16 09:05:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:05:31,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 181 [2024-11-16 09:05:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:05:31,862 INFO L225 Difference]: With dead ends: 74810 [2024-11-16 09:05:31,862 INFO L226 Difference]: Without dead ends: 42369 [2024-11-16 09:05:31,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:05:31,931 INFO L432 NwaCegarLoop]: 4188 mSDtfsCounter, 4103 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:05:31,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 4363 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:05:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42369 states. [2024-11-16 09:05:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42369 to 41550. [2024-11-16 09:05:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41550 states, 36035 states have (on average 1.2563341196059388) internal successors, (45272), 36384 states have internal predecessors, (45272), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2496 states have return successors, (5665), 2949 states have call predecessors, (5665), 3017 states have call successors, (5665) [2024-11-16 09:05:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41550 states to 41550 states and 53954 transitions. [2024-11-16 09:05:34,527 INFO L78 Accepts]: Start accepts. Automaton has 41550 states and 53954 transitions. Word has length 181 [2024-11-16 09:05:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:05:34,528 INFO L471 AbstractCegarLoop]: Abstraction has 41550 states and 53954 transitions. [2024-11-16 09:05:34,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-16 09:05:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 41550 states and 53954 transitions. [2024-11-16 09:05:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 09:05:34,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:05:34,557 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:05:34,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 09:05:34,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 09:05:34,758 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:05:34,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:05:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1477694369, now seen corresponding path program 1 times [2024-11-16 09:05:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:05:34,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820296998] [2024-11-16 09:05:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:05:34,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:05:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:05:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:05:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-16 09:05:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 09:05:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 09:05:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-16 09:05:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-16 09:05:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-16 09:05:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-16 09:05:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-11-16 09:05:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:05:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-16 09:05:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:05:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820296998] [2024-11-16 09:05:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820296998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:05:34,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:05:34,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:05:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150097088] [2024-11-16 09:05:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:05:34,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:05:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:05:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:05:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:05:34,845 INFO L87 Difference]: Start difference. First operand 41550 states and 53954 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)