/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.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:42:41,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:42:41,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:42:41,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:42:41,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:42:41,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:42:41,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:42:41,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:42:41,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:42:41,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:42:41,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:42:41,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:42:41,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:42:41,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:42:41,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:42:41,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:42:41,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:42:41,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:42:41,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:42:41,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:42:41,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:42:41,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:42:41,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:42:41,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:42:41,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:42:41,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:42:41,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:42:41,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:42:41,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:42:41,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:42:41,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:42:41,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:42:41,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:42:41,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:42:41,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:42:41,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:42:41,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:42:41,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:42:41,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:42:41,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:42:41,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:42:41,572 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 01:42:41,601 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:42:41,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:42:41,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:42:41,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:42:41,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:42:41,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:42:41,603 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:42:41,604 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:42:41,604 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:42:41,605 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:42:41,605 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:42:41,605 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:42:41,605 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:42:41,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:42:41,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:42:41,607 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:42:41,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:42:41,607 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:42:41,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:42:41,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:42:41,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:42:41,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:42:41,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:42:41,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:42:41,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:42:41,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:42:41,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:42:41,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:42:41,884 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:42:41,884 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:42:41,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-04-03 01:42:43,030 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:42:43,221 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:42:43,222 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-04-03 01:42:43,228 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d0032e0/4e9892a354d645519dff09e8e88c5924/FLAG815c88827 [2023-04-03 01:42:43,241 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d0032e0/4e9892a354d645519dff09e8e88c5924 [2023-04-03 01:42:43,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:42:43,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:42:43,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:42:43,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:42:43,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:42:43,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5199c7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43, skipping insertion in model container [2023-04-03 01:42:43,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:42:43,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:42:43,442 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.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-04-03 01:42:43,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:42:43,453 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:42:43,485 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.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-04-03 01:42:43,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:42:43,506 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:42:43,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43 WrapperNode [2023-04-03 01:42:43,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:42:43,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:42:43,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:42:43,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:42:43,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:42:43,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:42:43,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:42:43,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:42:43,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (1/1) ... [2023-04-03 01:42:43,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:42:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:42:43,586 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 01:42:43,592 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 01:42:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:42:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:42:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:42:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:42:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:42:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:42:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:42:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:42:43,702 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:42:43,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:42:44,220 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:42:44,499 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:42:44,500 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:42:44,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:42:44 BoogieIcfgContainer [2023-04-03 01:42:44,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:42:44,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:42:44,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:42:44,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:42:44,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:42:43" (1/3) ... [2023-04-03 01:42:44,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a8a8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:42:44, skipping insertion in model container [2023-04-03 01:42:44,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:42:43" (2/3) ... [2023-04-03 01:42:44,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a8a8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:42:44, skipping insertion in model container [2023-04-03 01:42:44,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:42:44" (3/3) ... [2023-04-03 01:42:44,518 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-04-03 01:42:44,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:42:44,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:42:44,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:42:44,589 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;@5e20675e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:42:44,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:42:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-03 01:42:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-03 01:42:44,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:44,601 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] [2023-04-03 01:42:44,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:44,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash 737683008, now seen corresponding path program 1 times [2023-04-03 01:42:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:44,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728817335] [2023-04-03 01:42:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:47,250 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 01:42:47,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728817335] [2023-04-03 01:42:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728817335] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:47,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-03 01:42:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761617709] [2023-04-03 01:42:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:47,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-03 01:42:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-03 01:42:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-04-03 01:42:47,307 INFO L87 Difference]: Start difference. First operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-03 01:42:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:48,498 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2023-04-03 01:42:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-03 01:42:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2023-04-03 01:42:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:48,508 INFO L225 Difference]: With dead ends: 96 [2023-04-03 01:42:48,508 INFO L226 Difference]: Without dead ends: 61 [2023-04-03 01:42:48,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2023-04-03 01:42:48,514 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 110 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:48,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 174 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 01:42:48,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-04-03 01:42:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2023-04-03 01:42:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-03 01:42:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-04-03 01:42:48,554 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 28 [2023-04-03 01:42:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:48,555 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-04-03 01:42:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-03 01:42:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-04-03 01:42:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-03 01:42:48,556 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:48,557 INFO L195 NwaCegarLoop]: trace histogram [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 01:42:48,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:42:48,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:48,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:48,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2115737049, now seen corresponding path program 1 times [2023-04-03 01:42:48,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:48,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024761105] [2023-04-03 01:42:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:42:55,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024761105] [2023-04-03 01:42:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024761105] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:42:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220848309] [2023-04-03 01:42:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:42:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:42:55,282 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 01:42:55,306 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 01:42:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:55,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 121 conjunts are in the unsatisfiable core [2023-04-03 01:42:55,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:43:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:43:11,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:43:42,804 WARN L223 SmtUtils]: Spent 30.58s on a formula simplification. DAG size of input: 1251 DAG size of output: 84 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:44:15,929 WARN L223 SmtUtils]: Spent 30.60s 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 01:44:38,408 WARN L223 SmtUtils]: Spent 19.47s on a formula simplification. DAG size of input: 1012 DAG size of output: 92 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:45:42,543 WARN L223 SmtUtils]: Spent 29.99s on a formula simplification. DAG size of input: 1247 DAG size of output: 80 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)