/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:48:44,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:48:44,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:48:44,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:48:44,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:48:44,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:48:44,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:48:44,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:48:44,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:48:44,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:48:44,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:48:44,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:48:44,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:48:44,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:48:44,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:48:44,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:48:44,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:48:44,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:48:44,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:48:44,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:48:44,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:48:44,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:48:44,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:48:44,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:48:44,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:48:44,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:48:44,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:48:44,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:48:44,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:48:44,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:48:44,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:48:44,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:48:44,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:48:44,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:48:44,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:48:44,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:48:44,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:48:44,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:48:44,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:48:44,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:48:44,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:48:44,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:48:44,540 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:48:44,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:48:44,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:48:44,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:48:44,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:48:44,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:48:44,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:48:44,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:48:44,542 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:48:44,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:48:44,542 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:48:44,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:48:44,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:48:44,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:48:44,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:48:44,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:48:44,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:48:44,546 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:48:44,546 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:48:44,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:48:44,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:48:44,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:48:44,763 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:48:44,763 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:48:44,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-03-31 01:48:45,917 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:48:46,336 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:48:46,337 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-03-31 01:48:46,379 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be550928/673a32b6d5c0438faef1f6346ee8a13e/FLAG225dfbf24 [2023-03-31 01:48:46,395 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be550928/673a32b6d5c0438faef1f6346ee8a13e [2023-03-31 01:48:46,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:48:46,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:48:46,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:48:46,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:48:46,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:48:46,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:48:46" (1/1) ... [2023-03-31 01:48:46,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212c16b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:46, skipping insertion in model container [2023-03-31 01:48:46,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:48:46" (1/1) ... [2023-03-31 01:48:46,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:48:46,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:48:46,994 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-03-31 01:48:47,078 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-03-31 01:48:47,101 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-03-31 01:48:47,166 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-03-31 01:48:47,213 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-03-31 01:48:47,277 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-03-31 01:48:47,333 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-03-31 01:48:47,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:48:47,580 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:48:47,695 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32048,32061] [2023-03-31 01:48:47,755 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[55802,55815] [2023-03-31 01:48:47,769 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[64372,64385] [2023-03-31 01:48:47,809 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[91775,91788] [2023-03-31 01:48:47,832 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[106857,106870] [2023-03-31 01:48:47,858 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[123963,123976] [2023-03-31 01:48:47,886 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[141761,141774] [2023-03-31 01:48:48,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:48:48,033 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:48:48,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48 WrapperNode [2023-03-31 01:48:48,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:48:48,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:48:48,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:48:48,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:48:48,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:48:48,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:48:48,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:48:48,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:48:48,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (1/1) ... [2023-03-31 01:48:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:48:48,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:48:48,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:48:48,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:48:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:48:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:48:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:48:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:48:48,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:48:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:48:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:48:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:48:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:48:48,723 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:48:48,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:48:52,052 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:48:52,082 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:48:52,082 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:48:52,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:48:52 BoogieIcfgContainer [2023-03-31 01:48:52,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:48:52,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:48:52,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:48:52,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:48:52,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:48:46" (1/3) ... [2023-03-31 01:48:52,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3870d03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:48:52, skipping insertion in model container [2023-03-31 01:48:52,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:48" (2/3) ... [2023-03-31 01:48:52,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3870d03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:48:52, skipping insertion in model container [2023-03-31 01:48:52,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:48:52" (3/3) ... [2023-03-31 01:48:52,098 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2023-03-31 01:48:52,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:48:52,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-03-31 01:48:52,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:48:52,259 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@2c6134ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:48:52,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-03-31 01:48:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 2051 states, 2039 states have (on average 1.7758705247670428) internal successors, (3621), 2046 states have internal predecessors, (3621), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:48:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 01:48:52,303 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:52,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:48:52,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:48:52,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1107976478, now seen corresponding path program 1 times [2023-03-31 01:48:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:52,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513008722] [2023-03-31 01:48:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:48:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513008722] [2023-03-31 01:48:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513008722] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:54,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:48:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556341149] [2023-03-31 01:48:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:48:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:54,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:48:54,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:48:54,949 INFO L87 Difference]: Start difference. First operand has 2051 states, 2039 states have (on average 1.7758705247670428) internal successors, (3621), 2046 states have internal predecessors, (3621), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:09,402 INFO L93 Difference]: Finished difference Result 3324 states and 5757 transitions. [2023-03-31 01:49:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-03-31 01:49:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:09,426 INFO L225 Difference]: With dead ends: 3324 [2023-03-31 01:49:09,426 INFO L226 Difference]: Without dead ends: 2145 [2023-03-31 01:49:09,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:09,436 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 10215 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 4493 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10215 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:09,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10215 Valid, 2262 Invalid, 4526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 4493 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-03-31 01:49:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-03-31 01:49:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2130. [2023-03-31 01:49:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2120 states have (on average 1.3033018867924528) internal successors, (2763), 2126 states have internal predecessors, (2763), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2766 transitions. [2023-03-31 01:49:09,657 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2766 transitions. Word has length 69 [2023-03-31 01:49:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:09,658 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 2766 transitions. [2023-03-31 01:49:09,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2766 transitions. [2023-03-31 01:49:09,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:49:09,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:09,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:49:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:49:09,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:09,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -680382372, now seen corresponding path program 1 times [2023-03-31 01:49:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573504249] [2023-03-31 01:49:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573504249] [2023-03-31 01:49:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573504249] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:49:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085527271] [2023-03-31 01:49:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:49:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:49:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:49:11,531 INFO L87 Difference]: Start difference. First operand 2130 states and 2766 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:20,914 INFO L93 Difference]: Finished difference Result 3791 states and 4934 transitions. [2023-03-31 01:49:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-03-31 01:49:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:20,924 INFO L225 Difference]: With dead ends: 3791 [2023-03-31 01:49:20,925 INFO L226 Difference]: Without dead ends: 2515 [2023-03-31 01:49:20,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:20,928 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 6516 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6516 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:20,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6516 Valid, 1261 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-03-31 01:49:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-03-31 01:49:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2505. [2023-03-31 01:49:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2495 states have (on average 1.305811623246493) internal successors, (3258), 2501 states have internal predecessors, (3258), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3261 transitions. [2023-03-31 01:49:21,044 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3261 transitions. Word has length 70 [2023-03-31 01:49:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:21,044 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3261 transitions. [2023-03-31 01:49:21,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3261 transitions. [2023-03-31 01:49:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:49:21,049 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:21,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:49:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:49:21,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:21,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash -457283186, now seen corresponding path program 1 times [2023-03-31 01:49:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:21,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866052098] [2023-03-31 01:49:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:21,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:22,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:22,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866052098] [2023-03-31 01:49:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866052098] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:22,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:49:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928345842] [2023-03-31 01:49:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:49:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:49:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:49:22,861 INFO L87 Difference]: Start difference. First operand 2505 states and 3261 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:31,130 INFO L93 Difference]: Finished difference Result 5237 states and 6856 transitions. [2023-03-31 01:49:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-03-31 01:49:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:31,147 INFO L225 Difference]: With dead ends: 5237 [2023-03-31 01:49:31,147 INFO L226 Difference]: Without dead ends: 3598 [2023-03-31 01:49:31,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:31,152 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 6270 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6270 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:31,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6270 Valid, 1272 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-03-31 01:49:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2023-03-31 01:49:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3582. [2023-03-31 01:49:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3572 states have (on average 1.2905935050391937) internal successors, (4610), 3578 states have internal predecessors, (4610), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 4613 transitions. [2023-03-31 01:49:31,331 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 4613 transitions. Word has length 70 [2023-03-31 01:49:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:31,331 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 4613 transitions. [2023-03-31 01:49:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 4613 transitions. [2023-03-31 01:49:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-03-31 01:49:31,337 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:31,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:49:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:49:31,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:31,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 292728898, now seen corresponding path program 1 times [2023-03-31 01:49:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679715868] [2023-03-31 01:49:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:33,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:33,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679715868] [2023-03-31 01:49:33,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679715868] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:33,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:33,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:49:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670715791] [2023-03-31 01:49:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:49:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:49:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:49:33,151 INFO L87 Difference]: Start difference. First operand 3582 states and 4613 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:41,822 INFO L93 Difference]: Finished difference Result 8121 states and 10650 transitions. [2023-03-31 01:49:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-03-31 01:49:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:41,841 INFO L225 Difference]: With dead ends: 8121 [2023-03-31 01:49:41,842 INFO L226 Difference]: Without dead ends: 5321 [2023-03-31 01:49:41,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:41,849 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 6583 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6583 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:41,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6583 Valid, 1326 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-03-31 01:49:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2023-03-31 01:49:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 5315. [2023-03-31 01:49:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5305 states have (on average 1.3000942507068802) internal successors, (6897), 5311 states have internal predecessors, (6897), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:42,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 6900 transitions. [2023-03-31 01:49:42,176 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 6900 transitions. Word has length 71 [2023-03-31 01:49:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:42,176 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 6900 transitions. [2023-03-31 01:49:42,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:49:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 6900 transitions. [2023-03-31 01:49:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-03-31 01:49:42,182 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:42,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:49:42,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:49:42,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:42,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash -694630220, now seen corresponding path program 1 times [2023-03-31 01:49:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492844827] [2023-03-31 01:49:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat