/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.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:48:33,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:48:33,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:48:33,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:48:33,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:48:33,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:48:33,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:48:33,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:48:33,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:48:33,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:48:33,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:48:33,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:48:33,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:48:33,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:48:33,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:48:33,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:48:33,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:48:33,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:48:33,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:48:33,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:48:33,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:48:33,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:48:33,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:48:33,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:48:33,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:48:33,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:48:33,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:48:33,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:48:33,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:48:33,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:48:33,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:48:33,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:48:33,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:48:33,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:48:33,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:48:33,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:48:33,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:48:33,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:48:33,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:48:33,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:48:33,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:48:33,395 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 01:48:33,424 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:48:33,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:48:33,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:48:33,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:48:33,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:48:33,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:48:33,425 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:48:33,426 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:48:33,426 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:48:33,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:48:33,427 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:48:33,427 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:48:33,428 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:48:33,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:48:33,428 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:48:33,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:48:33,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:48:33,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:48:33,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:48:33,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:48:33,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:48:33,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:48:33,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:48:33,430 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:48:33,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:48:33,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:48:33,431 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:48:33,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:48:33,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:48:33,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:48:33,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:48:33,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:48:33,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:48:33,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:48:33,634 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:48:33,635 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:48:33,636 INFO L432 ainManager$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.UNBOUNDED.pals.c [2023-04-03 01:48:34,760 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:48:34,952 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:48:34,953 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2023-04-03 01:48:34,963 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0555c0b29/f9267a51539b495e988e628046005bcc/FLAGfd47fc78a [2023-04-03 01:48:34,977 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0555c0b29/f9267a51539b495e988e628046005bcc [2023-04-03 01:48:34,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:48:34,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:48:34,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:48:34,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:48:34,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:48:34,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:48:34" (1/1) ... [2023-04-03 01:48:34,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceca239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:34, skipping insertion in model container [2023-04-03 01:48:34,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:48:34" (1/1) ... [2023-04-03 01:48:34,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:48:35,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:48:35,216 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.UNBOUNDED.pals.c[17005,17018] [2023-04-03 01:48:35,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:48:35,230 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:48:35,279 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.UNBOUNDED.pals.c[17005,17018] [2023-04-03 01:48:35,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:48:35,294 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:48:35,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35 WrapperNode [2023-04-03 01:48:35,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:48:35,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:48:35,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:48:35,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:48:35,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:48:35,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:48:35,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:48:35,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:48:35,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (1/1) ... [2023-04-03 01:48:35,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:48:35,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:48:35,390 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 01:48:35,398 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 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:48:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:48:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:48:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:48:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:48:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:48:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:48:35,513 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:48:35,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:48:36,130 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:48:36,690 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:48:36,691 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:48:36,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:48:36 BoogieIcfgContainer [2023-04-03 01:48:36,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:48:36,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:48:36,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:48:36,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:48:36,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:48:34" (1/3) ... [2023-04-03 01:48:36,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197e03d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:48:36, skipping insertion in model container [2023-04-03 01:48:36,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:35" (2/3) ... [2023-04-03 01:48:36,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197e03d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:48:36, skipping insertion in model container [2023-04-03 01:48:36,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:48:36" (3/3) ... [2023-04-03 01:48:36,702 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c [2023-04-03 01:48:36,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:48:36,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:48:36,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:48:36,778 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;@2a85217c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:48:36,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:48:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 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 01:48:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-03 01:48:36,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:48:36,792 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 01:48:36,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:48:36,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:48:36,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1931205181, now seen corresponding path program 1 times [2023-04-03 01:48:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:48:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436466392] [2023-04-03 01:48:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:48:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:48:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:48:42,494 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 01:48:42,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:48:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436466392] [2023-04-03 01:48:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436466392] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:48:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:48:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-03 01:48:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846810412] [2023-04-03 01:48:42,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:48:42,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-03 01:48:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:48:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-03 01:48:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-04-03 01:48:42,547 INFO L87 Difference]: Start difference. First operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 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 01:48:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:48:44,902 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2023-04-03 01:48:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-03 01:48:44,905 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 01:48:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:48:44,911 INFO L225 Difference]: With dead ends: 118 [2023-04-03 01:48:44,911 INFO L226 Difference]: Without dead ends: 84 [2023-04-03 01:48:44,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=652, Invalid=3380, Unknown=0, NotChecked=0, Total=4032 [2023-04-03 01:48:44,917 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 335 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:48:44,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 203 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:48:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-03 01:48:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-04-03 01:48:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 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 01:48:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2023-04-03 01:48:44,966 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 41 [2023-04-03 01:48:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:48:44,967 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2023-04-03 01:48:44,967 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 01:48:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2023-04-03 01:48:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 01:48:44,969 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:48:44,969 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] [2023-04-03 01:48:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:48:44,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:48:44,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:48:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1511457430, now seen corresponding path program 1 times [2023-04-03 01:48:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:48:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156972809] [2023-04-03 01:48:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:48:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:48:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-03 01:49:08,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:49:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156972809] [2023-04-03 01:49:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156972809] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:49:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999885585] [2023-04-03 01:49:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:49:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:49:08,982 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 01:49:08,984 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 01:49:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:09,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 238 conjunts are in the unsatisfiable core [2023-04-03 01:49:09,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:50:28,533 WARN L223 SmtUtils]: Spent 8.21s 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)