/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.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:46:19,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:46:19,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:46:19,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:46:19,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:46:19,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:46:19,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:46:19,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:46:19,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:46:19,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:46:19,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:46:19,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:46:19,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:46:19,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:46:19,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:46:19,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:46:19,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:46:19,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:46:19,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:46:19,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:46:19,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:46:19,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:46:19,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:46:19,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:46:19,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:46:19,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:46:19,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:46:19,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:46:19,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:46:19,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:46:19,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:46:19,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:46:19,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:46:19,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:46:19,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:46:19,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:46:19,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:46:19,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:46:19,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:46:19,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:46:19,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:46:19,279 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 01:46:19,300 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:46:19,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:46:19,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:46:19,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:46:19,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:46:19,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:46:19,301 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:46:19,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:46:19,302 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:46:19,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:46:19,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:46:19,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:46:19,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:46:19,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:46:19,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:46:19,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:46:19,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:46:19,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:46:19,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:46:19,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:46:19,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:46:19,560 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:46:19,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-04-03 01:46:20,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:46:20,914 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:46:20,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-04-03 01:46:20,922 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e9cc5d2/7a491c4fce4d40bda74bb9cdc7b23aa0/FLAG77a717e36 [2023-04-03 01:46:20,934 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e9cc5d2/7a491c4fce4d40bda74bb9cdc7b23aa0 [2023-04-03 01:46:20,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:46:20,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:46:20,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:46:20,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:46:20,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:46:20,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:46:20" (1/1) ... [2023-04-03 01:46:20,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153b373d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:20, skipping insertion in model container [2023-04-03 01:46:20,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:46:20" (1/1) ... [2023-04-03 01:46:20,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:46:20,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:46:21,169 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.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-04-03 01:46:21,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:46:21,181 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:46:21,221 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.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-04-03 01:46:21,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:46:21,239 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:46:21,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21 WrapperNode [2023-04-03 01:46:21,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:46:21,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:46:21,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:46:21,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:46:21,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:46:21,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:46:21,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:46:21,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:46:21,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (1/1) ... [2023-04-03 01:46:21,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:46:21,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:46:21,310 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 01:46:21,318 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 01:46:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:46:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:46:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:46:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:46:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:46:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:46:21,356 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:46:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:46:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:46:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:46:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:46:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:46:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:46:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:46:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:46:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:46:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:46:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:46:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:46:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:46:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:46:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:46:21,442 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:46:21,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:46:22,018 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:46:22,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:46:22,441 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:46:22,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:46:22 BoogieIcfgContainer [2023-04-03 01:46:22,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:46:22,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:46:22,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:46:22,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:46:22,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:46:20" (1/3) ... [2023-04-03 01:46:22,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be5b13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:46:22, skipping insertion in model container [2023-04-03 01:46:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:21" (2/3) ... [2023-04-03 01:46:22,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be5b13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:46:22, skipping insertion in model container [2023-04-03 01:46:22,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:46:22" (3/3) ... [2023-04-03 01:46:22,457 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-04-03 01:46:22,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:46:22,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:46:22,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:46:22,530 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;@3a6e93bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:46:22,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:46:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-03 01:46:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-03 01:46:22,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:46:22,544 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] [2023-04-03 01:46:22,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:46:22,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:46:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1286707055, now seen corresponding path program 1 times [2023-04-03 01:46:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:46:22,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312400898] [2023-04-03 01:46:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:22,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:46:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:26,903 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 01:46:26,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:46:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312400898] [2023-04-03 01:46:26,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312400898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:46:26,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:46:26,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-04-03 01:46:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145175942] [2023-04-03 01:46:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:46:26,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-03 01:46:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:46:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-03 01:46:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-04-03 01:46:26,952 INFO L87 Difference]: Start difference. First operand has 45 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:46:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:46:28,956 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2023-04-03 01:46:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-03 01:46:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 38 [2023-04-03 01:46:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:46:28,965 INFO L225 Difference]: With dead ends: 117 [2023-04-03 01:46:28,965 INFO L226 Difference]: Without dead ends: 79 [2023-04-03 01:46:28,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=562, Invalid=2978, Unknown=0, NotChecked=0, Total=3540 [2023-04-03 01:46:28,972 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 194 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:46:28,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 223 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:46:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-04-03 01:46:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-04-03 01:46:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-03 01:46:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2023-04-03 01:46:29,040 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 38 [2023-04-03 01:46:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:46:29,042 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2023-04-03 01:46:29,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-03 01:46:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2023-04-03 01:46:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 01:46:29,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:46:29,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:46:29,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:46:29,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:46:29,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:46:29,046 INFO L85 PathProgramCache]: Analyzing trace with hash -335892801, now seen corresponding path program 1 times [2023-04-03 01:46:29,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:46:29,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433156151] [2023-04-03 01:46:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:29,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:46:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:46:44,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:46:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433156151] [2023-04-03 01:46:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433156151] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:46:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199793463] [2023-04-03 01:46:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:44,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:46:44,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:46:44,480 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 01:46:44,483 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 01:46:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:44,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 215 conjunts are in the unsatisfiable core [2023-04-03 01:46:44,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:47:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:47:54,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:48:25,334 WARN L223 SmtUtils]: Spent 30.18s 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 01:48:57,523 WARN L223 SmtUtils]: Spent 29.99s on a formula simplification. DAG size of input: 1255 DAG size of output: 88 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:49:33,100 WARN L223 SmtUtils]: Spent 30.34s 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)