/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:48:59,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:48:59,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:48:59,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:48:59,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:48:59,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:48:59,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:48:59,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:48:59,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:48:59,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:48:59,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:48:59,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:48:59,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:48:59,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:48:59,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:48:59,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:48:59,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:48:59,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:48:59,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:48:59,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:48:59,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:48:59,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:48:59,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:48:59,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:48:59,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:48:59,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:48:59,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:48:59,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:48:59,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:48:59,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:48:59,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:48:59,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:48:59,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:48:59,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:48:59,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:48:59,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:48:59,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:48:59,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:48:59,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:48:59,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:48:59,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:48:59,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:48:59,284 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:48:59,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:48:59,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:48:59,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:48:59,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:48:59,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:48:59,285 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:48:59,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:48:59,286 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:48:59,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:48:59,286 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:48:59,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:48:59,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:48:59,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:48:59,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:48:59,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:48:59,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:48:59,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:48:59,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:48:59,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:48:59,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:48:59,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:48:59,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:48:59,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:48:59,513 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:48:59,514 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:48:59,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-04-03 01:49:00,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:49:00,803 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:49:00,803 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-04-03 01:49:00,810 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f31dd7c45/10ea285369be4a9795289c89c5a60274/FLAGb9342da30 [2023-04-03 01:49:00,819 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f31dd7c45/10ea285369be4a9795289c89c5a60274 [2023-04-03 01:49:00,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:49:00,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:49:00,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:49:00,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:49:00,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:49:00,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:49:00" (1/1) ... [2023-04-03 01:49:00,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ec95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:00, skipping insertion in model container [2023-04-03 01:49:00,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:49:00" (1/1) ... [2023-04-03 01:49:00,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:49:00,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:49:01,022 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-04-03 01:49:01,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:49:01,032 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:49:01,095 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-04-03 01:49:01,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:49:01,106 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:49:01,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01 WrapperNode [2023-04-03 01:49:01,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:49:01,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:49:01,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:49:01,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:49:01,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:49:01,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:49:01,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:49:01,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:49:01,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (1/1) ... [2023-04-03 01:49:01,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:49:01,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:49:01,179 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 01:49:01,215 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 01:49:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:49:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:49:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:49:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:49:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:49:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:49:01,305 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:49:01,307 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:49:01,684 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:49:02,081 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:49:02,081 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:49:02,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:49:02 BoogieIcfgContainer [2023-04-03 01:49:02,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:49:02,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:49:02,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:49:02,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:49:02,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:49:00" (1/3) ... [2023-04-03 01:49:02,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc43bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:49:02, skipping insertion in model container [2023-04-03 01:49:02,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:01" (2/3) ... [2023-04-03 01:49:02,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc43bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:49:02, skipping insertion in model container [2023-04-03 01:49:02,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:49:02" (3/3) ... [2023-04-03 01:49:02,089 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-04-03 01:49:02,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:49:02,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:49:02,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:49:02,140 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;@85e9477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:49:02,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:49:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-03 01:49:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-03 01:49:02,150 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:49:02,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:49:02,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:49:02,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:49:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2060578887, now seen corresponding path program 1 times [2023-04-03 01:49:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:49:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459032944] [2023-04-03 01:49:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:49:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:49:06,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:49:06,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459032944] [2023-04-03 01:49:06,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459032944] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:49:06,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:49:06,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-04-03 01:49:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3463675] [2023-04-03 01:49:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:49:06,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-03 01:49:06,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:49:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-03 01:49:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-04-03 01:49:06,418 INFO L87 Difference]: Start difference. First operand has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:49:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:49:08,423 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2023-04-03 01:49:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-03 01:49:08,426 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 41 [2023-04-03 01:49:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:49:08,430 INFO L225 Difference]: With dead ends: 127 [2023-04-03 01:49:08,431 INFO L226 Difference]: Without dead ends: 86 [2023-04-03 01:49:08,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=729, Invalid=3693, Unknown=0, NotChecked=0, Total=4422 [2023-04-03 01:49:08,436 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 210 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:49:08,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 253 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:49:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-04-03 01:49:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2023-04-03 01:49:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-03 01:49:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2023-04-03 01:49:08,474 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 41 [2023-04-03 01:49:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:49:08,475 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2023-04-03 01:49:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-03 01:49:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2023-04-03 01:49:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 01:49:08,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:49:08,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:49:08,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:49:08,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:49:08,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:49:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1539970931, now seen corresponding path program 1 times [2023-04-03 01:49:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:49:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645620892] [2023-04-03 01:49:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:08,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:49:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:49:26,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:49:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645620892] [2023-04-03 01:49:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645620892] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:49:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708507230] [2023-04-03 01:49:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:49:26,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:49:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:49:26,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:49:26,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:49:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:49:27,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 236 conjunts are in the unsatisfiable core [2023-04-03 01:49:27,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:50:44,674 WARN L223 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 168 DAG size of output: 138 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)