/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.6.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:48:53,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:48:53,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:48:53,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:48:53,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:48:53,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:48:53,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:48:53,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:48:53,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:48:53,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:48:53,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:48:53,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:48:53,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:48:53,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:48:53,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:48:53,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:48:53,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:48:53,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:48:53,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:48:53,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:48:53,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:48:53,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:48:53,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:48:53,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:48:53,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:48:53,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:48:53,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:48:53,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:48:53,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:48:53,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:48:53,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:48:53,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:48:53,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:48:53,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:48:53,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:48:53,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:48:53,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:48:53,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:48:53,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:48:53,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:48:53,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:48:53,185 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 01:48:53,213 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:48:53,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:48:53,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:48:53,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:48:53,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:48:53,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:48:53,215 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:48:53,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:48:53,216 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:48:53,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:48:53,216 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:48:53,217 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:48:53,217 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:48:53,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:48:53,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:48:53,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:48:53,219 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:48:53,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:48:53,219 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:48:53,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:48:53,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:48:53,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:48:53,220 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:48:53,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:48:53,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:48:53,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:48:53,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:48:53,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:48:53,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:48:53,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:48:53,491 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:48:53,491 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:48:53,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:48:54,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:48:54,898 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:48:54,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:48:54,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3c80041/a4d8408017764d8ca92c4efc06887306/FLAG64c845ffd [2023-04-03 01:48:54,921 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc3c80041/a4d8408017764d8ca92c4efc06887306 [2023-04-03 01:48:54,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:48:54,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:48:54,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:48:54,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:48:54,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:48:54,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:48:54" (1/1) ... [2023-04-03 01:48:54,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dffa6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:54, skipping insertion in model container [2023-04-03 01:48:54,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:48:54" (1/1) ... [2023-04-03 01:48:54,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:48:54,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:48:55,231 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.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2023-04-03 01:48:55,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:48:55,250 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:48:55,324 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.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2023-04-03 01:48:55,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:48:55,344 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:48:55,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55 WrapperNode [2023-04-03 01:48:55,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:48:55,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:48:55,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:48:55,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:48:55,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,410 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:48:55,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:48:55,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:48:55,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:48:55,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (1/1) ... [2023-04-03 01:48:55,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:48:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:48:55,458 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 01:48:55,485 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 01:48:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:48:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:48:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:48:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:48:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:48:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:48:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:48:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:48:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:48:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:48:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:48:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:48:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:48:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:48:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:48:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:48:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:48:55,618 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:48:55,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:48:56,158 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:48:56,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:48:56,649 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:48:56,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:48:56 BoogieIcfgContainer [2023-04-03 01:48:56,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:48:56,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:48:56,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:48:56,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:48:56,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:48:54" (1/3) ... [2023-04-03 01:48:56,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8908d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:48:56, skipping insertion in model container [2023-04-03 01:48:56,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:48:55" (2/3) ... [2023-04-03 01:48:56,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8908d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:48:56, skipping insertion in model container [2023-04-03 01:48:56,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:48:56" (3/3) ... [2023-04-03 01:48:56,661 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:48:56,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:48:56,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:48:56,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:48:56,734 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;@33a144e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:48:56,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:48:56,739 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 01:48:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-03 01:48:56,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:48:56,792 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 01:48:56,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:48:56,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:48:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1238817724, now seen corresponding path program 1 times [2023-04-03 01:48:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:48:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870591607] [2023-04-03 01:48:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:48:56,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:48:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:02,791 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 01:49:02,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:49:02,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870591607] [2023-04-03 01:49:02,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870591607] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:49:02,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:49:02,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-03 01:49:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844025094] [2023-04-03 01:49:02,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:49:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-03 01:49:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:49:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-03 01:49:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2023-04-03 01:49:02,834 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 01:49:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:49:05,341 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2023-04-03 01:49:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-03 01:49:05,343 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 01:49:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:49:05,350 INFO L225 Difference]: With dead ends: 118 [2023-04-03 01:49:05,350 INFO L226 Difference]: Without dead ends: 84 [2023-04-03 01:49:05,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2023-04-03 01:49:05,356 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 335 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 01:49:05,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 207 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 01:49:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-03 01:49:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-04-03 01:49:05,406 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 01:49:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2023-04-03 01:49:05,408 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 41 [2023-04-03 01:49:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:49:05,413 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2023-04-03 01:49:05,414 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 01:49:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2023-04-03 01:49:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-03 01:49:05,416 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:49:05,416 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 01:49:05,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:49:05,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:49:05,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:49:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash 602398247, now seen corresponding path program 1 times [2023-04-03 01:49:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:49:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600641911] [2023-04-03 01:49:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:49:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:49:29,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:49:29,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600641911] [2023-04-03 01:49:29,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600641911] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:49:29,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287576778] [2023-04-03 01:49:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:29,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:49:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:49:29,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:49:29,799 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 01:49:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:30,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 218 conjunts are in the unsatisfiable core [2023-04-03 01:49:30,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:50:32,970 WARN L223 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 168 DAG size of output: 136 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)