/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:45:32,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:45:32,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:45:32,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:45:32,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:45:32,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:45:32,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:45:32,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:45:32,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:45:32,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:45:32,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:45:32,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:45:32,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:45:32,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:45:32,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:45:32,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:45:32,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:45:32,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:45:32,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:45:32,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:45:32,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:45:32,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:45:32,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:45:32,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:45:32,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:45:32,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:45:32,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:45:32,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:45:32,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:45:32,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:45:32,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:45:32,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:45:32,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:45:32,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:45:32,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:45:32,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:45:32,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:45:32,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:45:32,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:45:32,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:45:32,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:45:32,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:45:32,442 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:45:32,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:45:32,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:45:32,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:45:32,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:45:32,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:45:32,443 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:45:32,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:45:32,444 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:45:32,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:45:32,444 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:45:32,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:45:32,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:45:32,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:45:32,445 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:45:32,445 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:45:32,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:45:32,446 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:45:32,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:45:32,446 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:45:32,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:45:32,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:45:32,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:45:32,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:45:32,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:45:32,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:45:32,448 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:45:32,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:45:32,448 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:45:32,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:45:32,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:45:32,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:45:32,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:45:32,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:45:32,449 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:45:32,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:45:32,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:45:32,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:45:32,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:45:32,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:45:32,699 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:45:32,700 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:45:32,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-04-03 01:45:33,778 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:45:33,966 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:45:33,967 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-04-03 01:45:33,974 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67406e550/cd54520c976e44dfaefae5b16868ec6e/FLAG9f77bbf62 [2023-04-03 01:45:33,985 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67406e550/cd54520c976e44dfaefae5b16868ec6e [2023-04-03 01:45:33,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:45:33,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:45:33,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:45:33,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:45:33,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:45:33,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:45:33" (1/1) ... [2023-04-03 01:45:33,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178779f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:33, skipping insertion in model container [2023-04-03 01:45:33,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:45:33" (1/1) ... [2023-04-03 01:45:34,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:45:34,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:45:34,196 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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2023-04-03 01:45:34,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:45:34,208 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:45:34,243 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/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2023-04-03 01:45:34,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:45:34,268 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:45:34,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34 WrapperNode [2023-04-03 01:45:34,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:45:34,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:45:34,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:45:34,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:45:34,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:45:34,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:45:34,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:45:34,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:45:34,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (1/1) ... [2023-04-03 01:45:34,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:45:34,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:45:34,356 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) [2023-04-03 01:45:34,375 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 [2023-04-03 01:45:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:45:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:45:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:45:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:45:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:45:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:45:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:45:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:45:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:45:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:45:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:45:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:45:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:45:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:45:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:45:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:45:34,489 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:45:34,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:45:34,967 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:45:35,319 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:45:35,320 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:45:35,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:45:35 BoogieIcfgContainer [2023-04-03 01:45:35,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:45:35,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:45:35,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:45:35,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:45:35,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:45:33" (1/3) ... [2023-04-03 01:45:35,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43aa2ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:45:35, skipping insertion in model container [2023-04-03 01:45:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:45:34" (2/3) ... [2023-04-03 01:45:35,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43aa2ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:45:35, skipping insertion in model container [2023-04-03 01:45:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:45:35" (3/3) ... [2023-04-03 01:45:35,334 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-04-03 01:45:35,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:45:35,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:45:35,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:45:35,396 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=FINITE_AUTOMATA, 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;@7f7ac3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:45:35,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:45:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:45:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-03 01:45:35,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:45:35,408 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] [2023-04-03 01:45:35,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:45:35,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:45:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash -349151634, now seen corresponding path program 1 times [2023-04-03 01:45:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:45:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087867074] [2023-04-03 01:45:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:45:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:45:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:45:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:45:38,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:45:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087867074] [2023-04-03 01:45:38,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087867074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:45:38,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:45:38,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 01:45:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165520598] [2023-04-03 01:45:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:45:38,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 01:45:38,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:45:38,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 01:45:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-04-03 01:45:38,244 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-03 01:45:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:45:39,626 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2023-04-03 01:45:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-03 01:45:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31 [2023-04-03 01:45:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:45:39,635 INFO L225 Difference]: With dead ends: 106 [2023-04-03 01:45:39,635 INFO L226 Difference]: Without dead ends: 68 [2023-04-03 01:45:39,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=494, Invalid=2262, Unknown=0, NotChecked=0, Total=2756 [2023-04-03 01:45:39,641 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 143 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:45:39,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 196 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 01:45:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-03 01:45:39,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2023-04-03 01:45:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-03 01:45:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2023-04-03 01:45:39,696 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 31 [2023-04-03 01:45:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:45:39,696 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2023-04-03 01:45:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-03 01:45:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2023-04-03 01:45:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-03 01:45:39,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:45:39,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 01:45:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:45:39,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:45:39,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:45:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -97329384, now seen corresponding path program 1 times [2023-04-03 01:45:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:45:39,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110948733] [2023-04-03 01:45:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:45:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:45:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:45:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:45:48,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:45:48,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110948733] [2023-04-03 01:45:48,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110948733] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:45:48,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682019966] [2023-04-03 01:45:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:45:48,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:45:48,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:45:48,793 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) [2023-04-03 01:45:48,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:45:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:45:49,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 175 conjunts are in the unsatisfiable core [2023-04-03 01:45:49,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:46:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:46:16,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:46:48,714 WARN L223 SmtUtils]: Spent 30.97s on a formula simplification. DAG size of input: 1251 DAG size of output: 85 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:47:22,405 WARN L223 SmtUtils]: Spent 30.72s on a formula simplification. DAG size of input: 1251 DAG size of output: 85 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:48:00,179 WARN L223 SmtUtils]: Spent 30.31s on a formula simplification. DAG size of input: 1247 DAG size of output: 81 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:48:55,403 WARN L223 SmtUtils]: Spent 37.25s on a formula simplification. DAG size of input: 1402 DAG size of output: 103 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)