/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.6.1.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:47:07,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:47:07,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:47:07,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:47:07,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:47:07,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:47:07,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:47:07,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:47:07,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:47:07,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:47:07,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:47:07,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:47:07,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:47:07,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:47:07,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:47:07,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:47:07,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:47:07,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:47:07,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:47:07,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:47:07,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:47:07,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:47:07,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:47:07,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:47:07,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:47:07,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:47:07,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:47:07,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:47:07,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:47:07,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:47:07,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:47:07,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:47:07,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:47:07,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:47:07,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:47:07,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:47:07,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:47:07,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:47:07,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:47:07,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:47:07,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:47:07,455 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 01:47:07,470 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:47:07,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:47:07,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:47:07,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:47:07,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:47:07,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:47:07,471 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:47:07,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:47:07,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:47:07,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:47:07,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:47:07,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:47:07,473 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:47:07,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:47:07,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:47:07,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:47:07,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:47:07,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:47:07,688 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:47:07,689 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:47:07,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-04-03 01:47:08,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:47:08,828 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:47:08,828 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-04-03 01:47:08,844 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b55d8e6b/bcdb7e045df845398d5f3cd57546653f/FLAGea18d954b [2023-04-03 01:47:08,854 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b55d8e6b/bcdb7e045df845398d5f3cd57546653f [2023-04-03 01:47:08,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:47:08,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:47:08,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:47:08,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:47:08,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:47:08,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:47:08" (1/1) ... [2023-04-03 01:47:08,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:08, skipping insertion in model container [2023-04-03 01:47:08,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:47:08" (1/1) ... [2023-04-03 01:47:08,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:47:08,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:47:09,035 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.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2023-04-03 01:47:09,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:47:09,044 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:47:09,095 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.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2023-04-03 01:47:09,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:47:09,107 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:47:09,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09 WrapperNode [2023-04-03 01:47:09,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:47:09,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:47:09,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:47:09,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:47:09,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:47:09,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:47:09,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:47:09,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:47:09,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (1/1) ... [2023-04-03 01:47:09,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:47:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:47:09,189 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 01:47:09,212 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 01:47:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:47:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:47:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:47:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:47:09,227 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:47:09,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:47:09,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:47:09,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:47:09,230 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:47:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:47:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:47:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:47:09,311 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:47:09,313 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:47:09,746 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:47:10,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:47:10,130 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:47:10,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:47:10 BoogieIcfgContainer [2023-04-03 01:47:10,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:47:10,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:47:10,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:47:10,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:47:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:47:08" (1/3) ... [2023-04-03 01:47:10,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a48776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:47:10, skipping insertion in model container [2023-04-03 01:47:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:47:09" (2/3) ... [2023-04-03 01:47:10,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a48776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:47:10, skipping insertion in model container [2023-04-03 01:47:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:47:10" (3/3) ... [2023-04-03 01:47:10,138 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2023-04-03 01:47:10,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:47:10,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:47:10,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:47:10,189 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;@310cc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:47:10,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:47:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-03 01:47:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-03 01:47:10,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:47:10,200 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] [2023-04-03 01:47:10,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:47:10,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:47:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -333559910, now seen corresponding path program 1 times [2023-04-03 01:47:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:47:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843441649] [2023-04-03 01:47:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:47:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:47:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:47:14,246 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 01:47:14,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:47:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843441649] [2023-04-03 01:47:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843441649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:47:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:47:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-03 01:47:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877733244] [2023-04-03 01:47:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:47:14,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-03 01:47:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:47:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-03 01:47:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2023-04-03 01:47:14,280 INFO L87 Difference]: Start difference. First operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:47:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:47:16,278 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2023-04-03 01:47:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-03 01:47:16,279 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 41 [2023-04-03 01:47:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:47:16,284 INFO L225 Difference]: With dead ends: 127 [2023-04-03 01:47:16,284 INFO L226 Difference]: Without dead ends: 86 [2023-04-03 01:47:16,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=684, Invalid=3476, Unknown=0, NotChecked=0, Total=4160 [2023-04-03 01:47:16,289 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 210 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:47:16,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 253 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:47:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-04-03 01:47:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2023-04-03 01:47:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-03 01:47:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2023-04-03 01:47:16,326 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 41 [2023-04-03 01:47:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:47:16,326 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2023-04-03 01:47:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:47:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2023-04-03 01:47:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 01:47:16,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:47:16,328 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:47:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:47:16,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:47:16,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:47:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1904421125, now seen corresponding path program 1 times [2023-04-03 01:47:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:47:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934755057] [2023-04-03 01:47:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:47:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:47:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:47:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:47:32,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:47:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934755057] [2023-04-03 01:47:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934755057] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:47:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453182569] [2023-04-03 01:47:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:47:32,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:47:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:47:32,314 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 01:47:32,315 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 01:47:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:47:32,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 246 conjunts are in the unsatisfiable core [2023-04-03 01:47:32,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:48:50,754 WARN L223 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 168 DAG size of output: 138 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)