/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_floodmax.5.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:15:36,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:15:36,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:15:36,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:15:36,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:15:36,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:15:36,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:15:36,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:15:36,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:15:36,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:15:36,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:15:36,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:15:36,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:15:36,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:15:36,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:15:36,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:15:36,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:15:36,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:15:36,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:15:36,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:15:36,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:15:36,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:15:36,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:15:36,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:15:36,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:15:36,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:15:36,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:15:36,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:15:36,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:15:36,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:15:36,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:15:36,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:15:36,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:15:36,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:15:36,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:15:36,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:15:36,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:15:36,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:15:36,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:15:36,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:15:36,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:15:36,752 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 06:15:36,787 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:15:36,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:15:36,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:15:36,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:15:36,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:15:36,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:15:36,789 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:15:36,789 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:15:36,789 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:15:36,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:15:36,789 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:15:36,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:15:36,790 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:15:36,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:15:36,791 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:15:36,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:15:36,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:15:36,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:15:36,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:15:36,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:15:36,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:15:36,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:15:36,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:15:36,797 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:15:36,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:15:36,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:15:36,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:15:36,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:15:36,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:15:36,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:15:36,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:15:37,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:15:37,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:15:37,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:15:37,053 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:15:37,056 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:15:37,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c [2023-04-01 06:15:38,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:15:38,550 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:15:38,550 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c [2023-04-01 06:15:38,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342f61fa5/dbed63e9cc4d457e9775c8b2c040efbf/FLAG43aa69905 [2023-04-01 06:15:38,585 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342f61fa5/dbed63e9cc4d457e9775c8b2c040efbf [2023-04-01 06:15:38,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:15:38,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:15:38,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:15:38,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:15:38,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:15:38,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:15:38" (1/1) ... [2023-04-01 06:15:38,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72aa8226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:38, skipping insertion in model container [2023-04-01 06:15:38,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:15:38" (1/1) ... [2023-04-01 06:15:38,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:15:38,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:15:39,061 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.5.2.ufo.UNBOUNDED.pals.c[61125,61138] [2023-04-01 06:15:39,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:15:39,084 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:15:39,207 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.5.2.ufo.UNBOUNDED.pals.c[61125,61138] [2023-04-01 06:15:39,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:15:39,223 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:15:39,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39 WrapperNode [2023-04-01 06:15:39,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:15:39,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:15:39,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:15:39,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:15:39,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:15:39,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:15:39,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:15:39,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:15:39,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (1/1) ... [2023-04-01 06:15:39,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:15:39,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:15:39,442 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 06:15:39,464 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 06:15:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:15:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:15:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 06:15:39,484 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 06:15:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 06:15:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:15:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 06:15:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:15:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:15:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:15:39,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:15:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:15:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:15:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:15:39,711 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:15:39,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:15:41,118 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:15:42,515 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:15:42,515 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 06:15:42,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:15:42 BoogieIcfgContainer [2023-04-01 06:15:42,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:15:42,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:15:42,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:15:42,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:15:42,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:15:38" (1/3) ... [2023-04-01 06:15:42,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b8035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:15:42, skipping insertion in model container [2023-04-01 06:15:42,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:15:39" (2/3) ... [2023-04-01 06:15:42,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b8035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:15:42, skipping insertion in model container [2023-04-01 06:15:42,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:15:42" (3/3) ... [2023-04-01 06:15:42,530 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c [2023-04-01 06:15:42,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:15:42,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:15:42,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:15:42,627 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;@4d0e71c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:15:42,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:15:42,637 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 06:15:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 06:15:42,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:15:42,666 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 06:15:42,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:15:42,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:15:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash 103772363, now seen corresponding path program 1 times [2023-04-01 06:15:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:15:42,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317727486] [2023-04-01 06:15:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:15:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:15:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:15:56,062 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 06:15:56,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:15:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317727486] [2023-04-01 06:15:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317727486] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:15:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:15:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-01 06:15:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387288082] [2023-04-01 06:15:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:15:56,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 06:15:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:15:56,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 06:15:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:15:56,112 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 06:16:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:16:01,620 INFO L93 Difference]: Finished difference Result 578 states and 929 transitions. [2023-04-01 06:16:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 06:16:01,623 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 06:16:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:16:01,637 INFO L225 Difference]: With dead ends: 578 [2023-04-01 06:16:01,638 INFO L226 Difference]: Without dead ends: 533 [2023-04-01 06:16:01,641 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 06:16:01,644 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6458 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:16:01,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6461 Valid, 142 Invalid, 7363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 06:16:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-04-01 06:16:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 509. [2023-04-01 06:16:01,731 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 06:16:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 833 transitions. [2023-04-01 06:16:01,734 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 833 transitions. Word has length 160 [2023-04-01 06:16:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:16:01,735 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 833 transitions. [2023-04-01 06:16:01,737 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 06:16:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 833 transitions. [2023-04-01 06:16:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 06:16:01,745 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:16:01,746 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 06:16:01,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:16:01,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:16:01,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:16:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2033712541, now seen corresponding path program 1 times [2023-04-01 06:16:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:16:01,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379748441] [2023-04-01 06:16:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:16:01,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:16:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:16:07,083 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 06:16:07,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:16:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379748441] [2023-04-01 06:16:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379748441] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:16:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:16:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:16:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202474554] [2023-04-01 06:16:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:16:07,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:16:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:16:07,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:16:07,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:16:07,087 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 06:16:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:16:09,723 INFO L93 Difference]: Finished difference Result 584 states and 927 transitions. [2023-04-01 06:16:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:16:09,724 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 06:16:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:16:09,728 INFO L225 Difference]: With dead ends: 584 [2023-04-01 06:16:09,728 INFO L226 Difference]: Without dead ends: 535 [2023-04-01 06:16:09,729 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 06:16:09,730 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, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:16:09,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 96 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5498 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 06:16:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-04-01 06:16:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 509. [2023-04-01 06:16:09,779 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 06:16:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 832 transitions. [2023-04-01 06:16:09,782 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 832 transitions. Word has length 161 [2023-04-01 06:16:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:16:09,782 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 832 transitions. [2023-04-01 06:16:09,783 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 06:16:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 832 transitions. [2023-04-01 06:16:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-01 06:16:09,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:16:09,785 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 06:16:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:16:09,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:16:09,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:16:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1455939980, now seen corresponding path program 1 times [2023-04-01 06:16:09,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:16:09,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503112292] [2023-04-01 06:16:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:16:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:16:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:16:14,448 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 06:16:14,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:16:14,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503112292] [2023-04-01 06:16:14,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503112292] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:16:14,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:16:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:16:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017569014] [2023-04-01 06:16:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:16:14,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:16:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:16:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:16:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:16:14,453 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 06:16:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:16:17,004 INFO L93 Difference]: Finished difference Result 595 states and 940 transitions. [2023-04-01 06:16:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:16:17,004 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 06:16:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:16:17,008 INFO L225 Difference]: With dead ends: 595 [2023-04-01 06:16:17,008 INFO L226 Difference]: Without dead ends: 546 [2023-04-01 06:16:17,009 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 06:16:17,010 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 06:16:17,010 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 06:16:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-04-01 06:16:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2023-04-01 06:16:17,053 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 06:16:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 830 transitions. [2023-04-01 06:16:17,056 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 830 transitions. Word has length 162 [2023-04-01 06:16:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:16:17,057 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 830 transitions. [2023-04-01 06:16:17,057 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 06:16:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 830 transitions. [2023-04-01 06:16:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-01 06:16:17,059 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:16:17,059 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 06:16:17,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:16:17,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:16:17,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:16:17,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1154274330, now seen corresponding path program 1 times [2023-04-01 06:16:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:16:17,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574599559] [2023-04-01 06:16:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:16:17,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:16:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:16:20,921 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 06:16:20,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:16:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574599559] [2023-04-01 06:16:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574599559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:16:20,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:16:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 06:16:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733372242] [2023-04-01 06:16:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:16:20,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 06:16:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:16:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 06:16:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 06:16:20,924 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)