/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.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:52:45,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:52:45,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:52:45,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:52:45,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:52:45,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:52:45,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:52:45,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:52:45,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:52:45,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:52:45,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:52:45,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:52:45,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:52:45,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:52:45,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:52:45,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:52:45,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:52:45,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:52:45,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:52:45,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:52:45,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:52:45,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:52:45,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:52:45,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:52:45,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:52:45,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:52:45,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:52:45,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:52:45,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:52:45,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:52:45,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:52:45,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:52:45,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:52:45,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:52:45,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:52:45,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:52:45,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:52:45,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:52:45,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:52:45,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:52:45,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:52:45,280 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 01:52:45,314 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:52:45,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:52:45,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:52:45,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:52:45,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:52:45,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:52:45,315 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:52:45,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:52:45,315 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:52:45,316 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:52:45,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:52:45,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:52:45,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:52:45,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:52:45,321 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:52:45,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:52:45,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:52:45,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:52:45,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:52:45,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:52:45,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:52:45,322 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:52:45,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:52:45,323 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:52:45,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:52:45,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:52:45,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:52:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:52:45,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:52:45,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:52:45,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:52:45,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:52:45,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:52:45,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:52:45,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:52:45,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:52:45,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:52:45,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:52:45,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:52:45,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:52:45,566 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:52:45,567 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:52:45,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-03 01:52:46,701 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:52:46,855 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:52:46,855 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-03 01:52:46,862 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24eb9735c/dbdcf92c40ce4bf0b27dfed7f5099326/FLAG3ec2aa8d0 [2023-04-03 01:52:46,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24eb9735c/dbdcf92c40ce4bf0b27dfed7f5099326 [2023-04-03 01:52:46,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:52:46,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:52:46,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:52:46,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:52:46,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:52:46,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:52:46" (1/1) ... [2023-04-03 01:52:46,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243291bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:46, skipping insertion in model container [2023-04-03 01:52:46,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:52:46" (1/1) ... [2023-04-03 01:52:46,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:52:46,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:52:47,118 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-04-03 01:52:47,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:52:47,130 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:52:47,180 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-04-03 01:52:47,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:52:47,192 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:52:47,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47 WrapperNode [2023-04-03 01:52:47,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:52:47,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:52:47,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:52:47,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:52:47,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:52:47,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:52:47,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:52:47,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:52:47,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ... [2023-04-03 01:52:47,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:52:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:52:47,298 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 01:52:47,299 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 01:52:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:52:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:52:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:52:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:52:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:52:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:52:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:52:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:52:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:52:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:52:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:52:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:52:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:52:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:52:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:52:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:52:47,408 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:52:47,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:52:47,888 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:52:48,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:52:48,220 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:52:48,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:52:48 BoogieIcfgContainer [2023-04-03 01:52:48,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:52:48,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:52:48,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:52:48,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:52:48,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:52:46" (1/3) ... [2023-04-03 01:52:48,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586ff834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:52:48, skipping insertion in model container [2023-04-03 01:52:48,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (2/3) ... [2023-04-03 01:52:48,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586ff834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:52:48, skipping insertion in model container [2023-04-03 01:52:48,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:52:48" (3/3) ... [2023-04-03 01:52:48,231 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-04-03 01:52:48,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:52:48,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:52:48,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:52:48,304 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;@1e7038db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:52:48,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:52:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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 01:52:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-03 01:52:48,314 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:52:48,315 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] [2023-04-03 01:52:48,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:52:48,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:52:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash 572119877, now seen corresponding path program 1 times [2023-04-03 01:52:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:52:48,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832091838] [2023-04-03 01:52:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:52:48,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:52:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:52:51,369 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 01:52:51,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:52:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832091838] [2023-04-03 01:52:51,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832091838] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:52:51,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:52:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-03 01:52:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342174370] [2023-04-03 01:52:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:52:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-03 01:52:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:52:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-03 01:52:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-04-03 01:52:51,445 INFO L87 Difference]: Start difference. First operand has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 01:52:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:52:52,676 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2023-04-03 01:52:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 01:52:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 40 [2023-04-03 01:52:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:52:52,686 INFO L225 Difference]: With dead ends: 165 [2023-04-03 01:52:52,687 INFO L226 Difference]: Without dead ends: 113 [2023-04-03 01:52:52,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070 [2023-04-03 01:52:52,692 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 575 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:52:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 149 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:52:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-03 01:52:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 72. [2023-04-03 01:52:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:52:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2023-04-03 01:52:52,742 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 40 [2023-04-03 01:52:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:52:52,743 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2023-04-03 01:52:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 01:52:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2023-04-03 01:52:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 01:52:52,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:52:52,744 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, 1] [2023-04-03 01:52:52,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:52:52,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:52:52,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:52:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1643024366, now seen corresponding path program 1 times [2023-04-03 01:52:52,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:52:52,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876522903] [2023-04-03 01:52:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:52:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:52:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:52:53,126 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 01:52:53,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:52:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876522903] [2023-04-03 01:52:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876522903] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:52:53,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:52:53,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:52:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788910371] [2023-04-03 01:52:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:52:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:52:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:52:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:52:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:52:53,129 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:52:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:52:53,449 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2023-04-03 01:52:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:52:53,450 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 42 [2023-04-03 01:52:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:52:53,452 INFO L225 Difference]: With dead ends: 136 [2023-04-03 01:52:53,453 INFO L226 Difference]: Without dead ends: 99 [2023-04-03 01:52:53,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:52:53,458 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 76 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:52:53,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 108 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:52:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-04-03 01:52:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2023-04-03 01:52:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:52:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2023-04-03 01:52:53,485 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 42 [2023-04-03 01:52:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:52:53,485 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2023-04-03 01:52:53,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:52:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2023-04-03 01:52:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 01:52:53,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:52:53,487 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, 1] [2023-04-03 01:52:53,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:52:53,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:52:53,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:52:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1195686643, now seen corresponding path program 1 times [2023-04-03 01:52:53,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:52:53,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89039919] [2023-04-03 01:52:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:52:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:52:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:52:55,543 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 01:52:55,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:52:55,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89039919] [2023-04-03 01:52:55,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89039919] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:52:55,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:52:55,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 01:52:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258583008] [2023-04-03 01:52:55,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:52:55,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 01:52:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:52:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 01:52:55,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-04-03 01:52:55,546 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:52:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:52:56,662 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2023-04-03 01:52:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-03 01:52:56,663 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 42 [2023-04-03 01:52:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:52:56,664 INFO L225 Difference]: With dead ends: 137 [2023-04-03 01:52:56,664 INFO L226 Difference]: Without dead ends: 101 [2023-04-03 01:52:56,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2023-04-03 01:52:56,666 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 331 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:52:56,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 148 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:52:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-04-03 01:52:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2023-04-03 01:52:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:52:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2023-04-03 01:52:56,689 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 42 [2023-04-03 01:52:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:52:56,689 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2023-04-03 01:52:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:52:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2023-04-03 01:52:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 01:52:56,690 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:52:56,691 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, 1, 1] [2023-04-03 01:52:56,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:52:56,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:52:56,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:52:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash 202991645, now seen corresponding path program 1 times [2023-04-03 01:52:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:52:56,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767589138] [2023-04-03 01:52:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:52:56,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:52:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:52:57,657 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 01:52:57,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:52:57,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767589138] [2023-04-03 01:52:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767589138] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:52:57,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:52:57,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 01:52:57,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627441951] [2023-04-03 01:52:57,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:52:57,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 01:52:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:52:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 01:52:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:52:57,660 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:52:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:52:57,926 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2023-04-03 01:52:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 01:52:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 43 [2023-04-03 01:52:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:52:57,927 INFO L225 Difference]: With dead ends: 112 [2023-04-03 01:52:57,927 INFO L226 Difference]: Without dead ends: 110 [2023-04-03 01:52:57,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-04-03 01:52:57,929 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:52:57,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 568 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:52:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-03 01:52:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2023-04-03 01:52:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2023-04-03 01:52:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-04-03 01:52:57,956 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 43 [2023-04-03 01:52:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:52:57,957 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-04-03 01:52:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:52:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-04-03 01:52:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-03 01:52:57,962 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:52:57,963 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, 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 01:52:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:52:57,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:52:57,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:52:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1814055407, now seen corresponding path program 1 times [2023-04-03 01:52:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:52:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773251802] [2023-04-03 01:52:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:52:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:52:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:53:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:53:07,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:53:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773251802] [2023-04-03 01:53:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773251802] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:53:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970196900] [2023-04-03 01:53:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:53:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:53:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:53:07,033 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 01:53:07,044 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 01:53:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:53:07,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 182 conjunts are in the unsatisfiable core [2023-04-03 01:53:07,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:53:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:53:52,914 INFO L327 TraceCheckSpWp]: Computing backward predicates...