/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.5.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:45:58,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:45:58,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:45:58,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:45:58,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:45:58,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:45:58,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:45:58,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:45:58,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:45:58,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:45:58,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:45:58,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:45:58,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:45:58,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:45:58,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:45:58,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:45:58,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:45:58,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:45:58,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:45:58,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:45:58,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:45:58,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:45:58,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:45:58,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:45:58,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:45:58,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:45:58,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:45:58,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:45:58,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:45:58,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:45:58,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:45:58,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:45:58,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:45:58,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:45:58,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:45:58,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:45:58,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:45:58,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:45:58,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:45:58,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:45:58,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:45:58,348 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 01:45:58,383 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:45:58,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:45:58,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:45:58,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:45:58,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:45:58,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:45:58,384 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:45:58,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:45:58,385 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:45:58,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:45:58,385 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:45:58,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:45:58,386 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:45:58,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:45:58,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:45:58,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:45:58,388 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:45:58,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:45:58,388 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:45:58,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:45:58,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:45:58,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:45:58,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:45:58,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:45:58,389 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:45:58,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:45:58,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:45:58,390 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:45:58,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:45:58,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:45:58,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:45:58,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:45:58,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:45:58,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:45:58,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:45:58,624 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:45:58,624 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:45:58,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:45:59,771 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:46:00,008 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:46:00,009 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:46:00,019 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1fe7192/ccfb6fe4d72d43a6af156a40cf1a05de/FLAGafadbedb7 [2023-04-03 01:46:00,037 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1fe7192/ccfb6fe4d72d43a6af156a40cf1a05de [2023-04-03 01:46:00,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:46:00,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:46:00,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:46:00,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:46:00,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:46:00,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330bef53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00, skipping insertion in model container [2023-04-03 01:46:00,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:46:00,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:46:00,262 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2023-04-03 01:46:00,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:46:00,286 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:46:00,338 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2023-04-03 01:46:00,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:46:00,353 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:46:00,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00 WrapperNode [2023-04-03 01:46:00,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:46:00,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:46:00,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:46:00,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:46:00,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:46:00,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:46:00,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:46:00,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:46:00,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (1/1) ... [2023-04-03 01:46:00,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:46:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:46:00,449 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 01:46:00,473 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 01:46:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:46:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:46:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:46:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:46:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:46:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:46:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:46:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:46:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:46:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:46:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:46:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:46:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:46:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:46:00,611 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:46:00,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:46:01,075 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:46:01,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:46:01,503 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:46:01,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:46:01 BoogieIcfgContainer [2023-04-03 01:46:01,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:46:01,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:46:01,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:46:01,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:46:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:46:00" (1/3) ... [2023-04-03 01:46:01,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee3b0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:46:01, skipping insertion in model container [2023-04-03 01:46:01,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:46:00" (2/3) ... [2023-04-03 01:46:01,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee3b0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:46:01, skipping insertion in model container [2023-04-03 01:46:01,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:46:01" (3/3) ... [2023-04-03 01:46:01,514 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2023-04-03 01:46:01,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:46:01,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:46:01,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:46:01,593 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;@36c051ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:46:01,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:46:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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 01:46:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-03 01:46:01,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:46:01,611 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 01:46:01,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:46:01,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:46:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1128276377, now seen corresponding path program 1 times [2023-04-03 01:46:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:46:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939203704] [2023-04-03 01:46:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:46:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:06,339 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 01:46:06,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:46:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939203704] [2023-04-03 01:46:06,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939203704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:46:06,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:46:06,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-04-03 01:46:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940760410] [2023-04-03 01:46:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:46:06,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-03 01:46:06,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:46:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-03 01:46:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-04-03 01:46:06,399 INFO L87 Difference]: Start difference. First operand has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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 01:46:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:46:08,701 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2023-04-03 01:46:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-03 01:46:08,703 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 01:46:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:46:08,709 INFO L225 Difference]: With dead ends: 108 [2023-04-03 01:46:08,709 INFO L226 Difference]: Without dead ends: 77 [2023-04-03 01:46:08,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=628, Invalid=3278, Unknown=0, NotChecked=0, Total=3906 [2023-04-03 01:46:08,718 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 246 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:46:08,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 185 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:46:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-04-03 01:46:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2023-04-03 01:46:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 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 01:46:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2023-04-03 01:46:08,772 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 38 [2023-04-03 01:46:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:46:08,772 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2023-04-03 01:46:08,772 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 01:46:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2023-04-03 01:46:08,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 01:46:08,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:46:08,774 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] [2023-04-03 01:46:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:46:08,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:46:08,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:46:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash 333020346, now seen corresponding path program 1 times [2023-04-03 01:46:08,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:46:08,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109209461] [2023-04-03 01:46:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:46:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:46:24,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:46:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109209461] [2023-04-03 01:46:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109209461] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:46:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983116873] [2023-04-03 01:46:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:46:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:46:24,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:46:24,518 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 01:46:24,519 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 01:46:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:46:24,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 186 conjunts are in the unsatisfiable core [2023-04-03 01:46:24,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:47:25,332 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 01:47:25,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:47:56,519 WARN L223 SmtUtils]: Spent 30.23s on a formula simplification. DAG size of input: 1247 DAG size of output: 81 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-03 01:48:29,260 WARN L223 SmtUtils]: Spent 30.37s 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 01:49:02,432 WARN L223 SmtUtils]: Spent 30.27s 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)