/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:12:09,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:12:09,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:12:09,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:12:09,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:12:09,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:12:09,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:12:09,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:12:09,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:12:09,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:12:09,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:12:09,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:12:09,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:12:09,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:12:09,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:12:09,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:12:09,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:12:09,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:12:09,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:12:09,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:12:09,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:12:09,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:12:09,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:12:09,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:12:09,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 00:12:09,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:12:09,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:12:09,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:12:09,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:12:09,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:12:09,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:12:09,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:12:09,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:12:09,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:12:09,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:12:09,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:12:09,683 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 [2023-04-01 00:12:09,717 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:12:09,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:12:09,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:12:09,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:12:09,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:12:09,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:12:09,719 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:12:09,719 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:12:09,719 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:12:09,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:12:09,720 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:12:09,720 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:12:09,720 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:12:09,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:12:09,721 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:12:09,721 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:12:09,721 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:12:09,721 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:12:09,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:12:09,722 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:12:09,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:12:09,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:12:09,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:12:09,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:12:09,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:12:09,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:12:09,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:12:09,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:12:09,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:12:09,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:12:09,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:12:09,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:12:09,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:12:09,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:12:09,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:12:10,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:12:10,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:12:10,007 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:12:10,008 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:12:10,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-01 00:12:11,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:12:11,540 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:12:11,540 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-01 00:12:11,577 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b965e03/52806538fc7a4c4fb15486a34e508583/FLAGe77e7587e [2023-04-01 00:12:11,590 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b965e03/52806538fc7a4c4fb15486a34e508583 [2023-04-01 00:12:11,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:12:11,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:12:11,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:12:11,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:12:11,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:12:11,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:11" (1/1) ... [2023-04-01 00:12:11,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a11800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:11, skipping insertion in model container [2023-04-01 00:12:11,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:11" (1/1) ... [2023-04-01 00:12:11,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:12:11,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:12:12,108 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_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-01 00:12:12,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:12:12,125 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:12:12,261 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_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-01 00:12:12,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:12:12,280 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:12:12,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12 WrapperNode [2023-04-01 00:12:12,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:12:12,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:12:12,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:12:12,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:12:12,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:12:12,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:12:12,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:12:12,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:12:12,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (1/1) ... [2023-04-01 00:12:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:12:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:12:12,465 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) [2023-04-01 00:12:12,487 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 [2023-04-01 00:12:12,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:12:12,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:12:12,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:12:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:12:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:12:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:12:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:12:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:12:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:12:12,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:12:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:12:12,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:12:12,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:12:12,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:12:12,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:12:12,716 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:12:12,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:12:14,185 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:12:15,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:12:15,348 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:12:15,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:15 BoogieIcfgContainer [2023-04-01 00:12:15,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:12:15,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:12:15,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:12:15,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:12:15,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:12:11" (1/3) ... [2023-04-01 00:12:15,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457fe43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:15, skipping insertion in model container [2023-04-01 00:12:15,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:12" (2/3) ... [2023-04-01 00:12:15,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457fe43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:15, skipping insertion in model container [2023-04-01 00:12:15,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:15" (3/3) ... [2023-04-01 00:12:15,358 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-01 00:12:15,374 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:12:15,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:12:15,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:12:15,441 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;@13170b8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:12:15,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:12:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 454 states have (on average 1.6938325991189427) internal successors, (769), 456 states have internal predecessors, (769), 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) [2023-04-01 00:12:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 00:12:15,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:15,466 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, 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, 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, 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] [2023-04-01 00:12:15,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:15,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 103772363, now seen corresponding path program 1 times [2023-04-01 00:12:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687143993] [2023-04-01 00:12:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:29,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687143993] [2023-04-01 00:12:29,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687143993] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-01 00:12:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020437690] [2023-04-01 00:12:29,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:29,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 00:12:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 00:12:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:12:29,354 INFO L87 Difference]: Start difference. First operand has 478 states, 454 states have (on average 1.6938325991189427) internal successors, (769), 456 states have internal predecessors, (769), 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 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 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) [2023-04-01 00:12:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:35,065 INFO L93 Difference]: Finished difference Result 578 states and 929 transitions. [2023-04-01 00:12:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 00:12:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 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 160 [2023-04-01 00:12:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:35,087 INFO L225 Difference]: With dead ends: 578 [2023-04-01 00:12:35,089 INFO L226 Difference]: Without dead ends: 533 [2023-04-01 00:12:35,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 00:12:35,095 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6458 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6461 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 7363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:35,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6461 Valid, 142 Invalid, 7363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 00:12:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-04-01 00:12:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 509. [2023-04-01 00:12:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6821052631578948) internal successors, (799), 476 states have internal predecessors, (799), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2023-04-01 00:12:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 833 transitions. [2023-04-01 00:12:35,197 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 833 transitions. Word has length 160 [2023-04-01 00:12:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:35,197 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 833 transitions. [2023-04-01 00:12:35,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 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) [2023-04-01 00:12:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 833 transitions. [2023-04-01 00:12:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 00:12:35,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:35,202 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, 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, 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, 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] [2023-04-01 00:12:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:12:35,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:35,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2033712541, now seen corresponding path program 1 times [2023-04-01 00:12:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076004792] [2023-04-01 00:12:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:41,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:41,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076004792] [2023-04-01 00:12:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076004792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:41,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:41,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:41,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366427520] [2023-04-01 00:12:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:41,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:41,184 INFO L87 Difference]: Start difference. First operand 509 states and 833 transitions. Second operand has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 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) [2023-04-01 00:12:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:43,884 INFO L93 Difference]: Finished difference Result 584 states and 927 transitions. [2023-04-01 00:12:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 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 161 [2023-04-01 00:12:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:43,888 INFO L225 Difference]: With dead ends: 584 [2023-04-01 00:12:43,889 INFO L226 Difference]: Without dead ends: 535 [2023-04-01 00:12:43,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:12:43,891 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 826 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 96 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5498 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 00:12:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-04-01 00:12:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 509. [2023-04-01 00:12:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.68) internal successors, (798), 476 states have internal predecessors, (798), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2023-04-01 00:12:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 832 transitions. [2023-04-01 00:12:43,954 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 832 transitions. Word has length 161 [2023-04-01 00:12:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:43,954 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 832 transitions. [2023-04-01 00:12:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 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) [2023-04-01 00:12:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 832 transitions. [2023-04-01 00:12:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-01 00:12:43,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:43,957 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, 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, 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, 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] [2023-04-01 00:12:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:12:43,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:43,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1455939980, now seen corresponding path program 1 times [2023-04-01 00:12:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137110054] [2023-04-01 00:12:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:43,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:48,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137110054] [2023-04-01 00:12:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137110054] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:48,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:48,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842229603] [2023-04-01 00:12:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:48,532 INFO L87 Difference]: Start difference. First operand 509 states and 832 transitions. Second operand has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 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) [2023-04-01 00:12:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:50,998 INFO L93 Difference]: Finished difference Result 595 states and 940 transitions. [2023-04-01 00:12:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 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 162 [2023-04-01 00:12:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:51,006 INFO L225 Difference]: With dead ends: 595 [2023-04-01 00:12:51,007 INFO L226 Difference]: Without dead ends: 546 [2023-04-01 00:12:51,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:12:51,023 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1643 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5522 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 5569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:51,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 92 Invalid, 5569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5522 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 00:12:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-04-01 00:12:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2023-04-01 00:12:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6778947368421053) internal successors, (797), 476 states have internal predecessors, (797), 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) [2023-04-01 00:12:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 830 transitions. [2023-04-01 00:12:51,068 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 830 transitions. Word has length 162 [2023-04-01 00:12:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:51,068 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 830 transitions. [2023-04-01 00:12:51,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 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) [2023-04-01 00:12:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 830 transitions. [2023-04-01 00:12:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-01 00:12:51,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:51,071 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, 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, 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, 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] [2023-04-01 00:12:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:12:51,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:51,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1154274330, now seen corresponding path program 1 times [2023-04-01 00:12:51,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:51,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964757677] [2023-04-01 00:12:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:12:54,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964757677] [2023-04-01 00:12:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964757677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:54,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405476715] [2023-04-01 00:12:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:54,835 INFO L87 Difference]: Start difference. First operand 509 states and 830 transitions. Second operand has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 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)