/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.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:12:06,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:12:06,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:12:06,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:12:06,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:12:06,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:12:06,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:12:06,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:12:06,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:12:06,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:12:06,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:12:06,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:12:06,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:12:06,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:12:06,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:12:06,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:12:06,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:12:06,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:12:06,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:12:06,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:12:06,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:12:06,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:12:06,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:12:06,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:12:06,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:12:06,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:12:06,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:12:06,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:12:06,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:12:06,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:12:06,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:12:06,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:12:06,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:12:06,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:12:06,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:12:06,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:12:06,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:12:06,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:12:06,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:12:06,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:12:06,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:12:06,639 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 00:12:06,654 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:12:06,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:12:06,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:12:06,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:12:06,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:12:06,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:12:06,655 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:12:06,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:12:06,655 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:12:06,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:12:06,656 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:12:06,656 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:12:06,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:12:06,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:12:06,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:12:06,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:12:06,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:12:06,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:12:06,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:12:06,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:12:06,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:12:06,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:12:06,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:12:06,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:12:06,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:12:06,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:12:06,824 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:12:06,824 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:12:06,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-04-01 00:12:07,961 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:12:08,227 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:12:08,228 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-04-01 00:12:08,250 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd8c6682/2fc83bc148304771b8856a440310528d/FLAGb40d30432 [2023-04-01 00:12:08,264 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bd8c6682/2fc83bc148304771b8856a440310528d [2023-04-01 00:12:08,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:12:08,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:12:08,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:12:08,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:12:08,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:12:08,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664aa285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08, skipping insertion in model container [2023-04-01 00:12:08,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:12:08,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:12:08,596 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.BOUNDED-10.pals.c[60915,60928] [2023-04-01 00:12:08,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:12:08,616 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:12:08,716 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.BOUNDED-10.pals.c[60915,60928] [2023-04-01 00:12:08,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:12:08,728 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:12:08,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08 WrapperNode [2023-04-01 00:12:08,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:12:08,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:12:08,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:12:08,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:12:08,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:12:08,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:12:08,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:12:08,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:12:08,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (1/1) ... [2023-04-01 00:12:08,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:12:08,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:12:08,908 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 00:12:08,915 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 00:12:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:12:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:12:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:12:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:12:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-01 00:12:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:12:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:12:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:12:09,146 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:12:09,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:12:10,423 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:12:11,439 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:12:11,440 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 00:12:11,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:11 BoogieIcfgContainer [2023-04-01 00:12:11,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:12:11,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:12:11,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:12:11,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:12:11,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:12:08" (1/3) ... [2023-04-01 00:12:11,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350f8911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:11, skipping insertion in model container [2023-04-01 00:12:11,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:08" (2/3) ... [2023-04-01 00:12:11,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350f8911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:11, skipping insertion in model container [2023-04-01 00:12:11,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:11" (3/3) ... [2023-04-01 00:12:11,451 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-04-01 00:12:11,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:12:11,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:12:11,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:12:11,531 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;@2bb12eba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:12:11,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:12:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 455 states have (on average 1.6923076923076923) internal successors, (770), 456 states have internal predecessors, (770), 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 00:12:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 00:12:11,562 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:11,563 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 00:12:11,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:11,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1230202245, now seen corresponding path program 1 times [2023-04-01 00:12:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231698215] [2023-04-01 00:12:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:20,045 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 00:12:20,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231698215] [2023-04-01 00:12:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231698215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:20,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:20,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-01 00:12:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49272245] [2023-04-01 00:12:20,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:20,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-01 00:12:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-01 00:12:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-01 00:12:20,086 INFO L87 Difference]: Start difference. First operand has 479 states, 455 states have (on average 1.6923076923076923) internal successors, (770), 456 states have internal predecessors, (770), 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 00:12:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:24,429 INFO L93 Difference]: Finished difference Result 594 states and 941 transitions. [2023-04-01 00:12:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 00:12:24,434 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 00:12:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:24,452 INFO L225 Difference]: With dead ends: 594 [2023-04-01 00:12:24,452 INFO L226 Difference]: Without dead ends: 536 [2023-04-01 00:12:24,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 00:12:24,457 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6477 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 7470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 7271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:24,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 206 Invalid, 7470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 7271 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 00:12:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-01 00:12:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 510. [2023-04-01 00:12:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.680672268907563) internal successors, (800), 477 states have internal predecessors, (800), 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 00:12:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 834 transitions. [2023-04-01 00:12:24,545 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 834 transitions. Word has length 160 [2023-04-01 00:12:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:24,547 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 834 transitions. [2023-04-01 00:12:24,548 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 00:12:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 834 transitions. [2023-04-01 00:12:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 00:12:24,552 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:24,552 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 00:12:24,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:12:24,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:24,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1326141833, now seen corresponding path program 1 times [2023-04-01 00:12:24,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:24,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899623316] [2023-04-01 00:12:24,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:24,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:28,728 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 00:12:28,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:28,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899623316] [2023-04-01 00:12:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899623316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:28,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:28,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116512378] [2023-04-01 00:12:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:28,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:28,735 INFO L87 Difference]: Start difference. First operand 510 states and 834 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 00:12:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:31,206 INFO L93 Difference]: Finished difference Result 588 states and 931 transitions. [2023-04-01 00:12:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:31,207 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 00:12:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:31,210 INFO L225 Difference]: With dead ends: 588 [2023-04-01 00:12:31,210 INFO L226 Difference]: Without dead ends: 538 [2023-04-01 00:12:31,211 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 00:12:31,212 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 828 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 118 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6291 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 00:12:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-04-01 00:12:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 510. [2023-04-01 00:12:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6785714285714286) internal successors, (799), 477 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 00:12:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 833 transitions. [2023-04-01 00:12:31,276 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 833 transitions. Word has length 161 [2023-04-01 00:12:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:31,276 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 833 transitions. [2023-04-01 00:12:31,277 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 00:12:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 833 transitions. [2023-04-01 00:12:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-01 00:12:31,278 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:31,278 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 00:12:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:12:31,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:31,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1101409636, now seen corresponding path program 1 times [2023-04-01 00:12:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121512522] [2023-04-01 00:12:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:34,945 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 00:12:34,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121512522] [2023-04-01 00:12:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121512522] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060930490] [2023-04-01 00:12:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:34,949 INFO L87 Difference]: Start difference. First operand 510 states and 833 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 00:12:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:37,209 INFO L93 Difference]: Finished difference Result 599 states and 944 transitions. [2023-04-01 00:12:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:37,210 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 00:12:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:37,213 INFO L225 Difference]: With dead ends: 599 [2023-04-01 00:12:37,213 INFO L226 Difference]: Without dead ends: 549 [2023-04-01 00:12:37,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 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 00:12:37,215 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 853 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5590 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 5618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:37,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 115 Invalid, 5618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5590 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 00:12:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-04-01 00:12:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 510. [2023-04-01 00:12:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6764705882352942) internal successors, (798), 477 states have internal predecessors, (798), 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 00:12:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 831 transitions. [2023-04-01 00:12:37,253 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 831 transitions. Word has length 162 [2023-04-01 00:12:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:37,255 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 831 transitions. [2023-04-01 00:12:37,256 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 00:12:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 831 transitions. [2023-04-01 00:12:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-01 00:12:37,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:37,258 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 00:12:37,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:12:37,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:37,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash 152805248, now seen corresponding path program 1 times [2023-04-01 00:12:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:37,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40859205] [2023-04-01 00:12:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:40,744 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 00:12:40,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:40,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40859205] [2023-04-01 00:12:40,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40859205] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:40,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:40,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305306139] [2023-04-01 00:12:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:40,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:40,747 INFO L87 Difference]: Start difference. First operand 510 states and 831 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) [2023-04-01 00:12:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:43,441 INFO L93 Difference]: Finished difference Result 593 states and 928 transitions. [2023-04-01 00:12:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:43,441 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 163 [2023-04-01 00:12:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:43,443 INFO L225 Difference]: With dead ends: 593 [2023-04-01 00:12:43,444 INFO L226 Difference]: Without dead ends: 548 [2023-04-01 00:12:43,444 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 00:12:43,445 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 855 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6355 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 6379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:43,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 122 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6355 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 00:12:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-01 00:12:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 510. [2023-04-01 00:12:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6743697478991597) internal successors, (797), 477 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 00:12:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 830 transitions. [2023-04-01 00:12:43,483 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 830 transitions. Word has length 163 [2023-04-01 00:12:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:43,483 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 830 transitions. [2023-04-01 00:12:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-04-01 00:12:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 830 transitions. [2023-04-01 00:12:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-01 00:12:43,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:43,491 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, 1] [2023-04-01 00:12:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:12:43,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:43,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1917551693, now seen corresponding path program 1 times [2023-04-01 00:12:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114722761] [2023-04-01 00:12:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:46,843 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 00:12:46,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114722761] [2023-04-01 00:12:46,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114722761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:46,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:46,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:46,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872109974] [2023-04-01 00:12:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:46,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:46,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:46,846 INFO L87 Difference]: Start difference. First operand 510 states and 830 transitions. Second operand has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 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 00:12:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:49,126 INFO L93 Difference]: Finished difference Result 599 states and 933 transitions. [2023-04-01 00:12:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 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 164 [2023-04-01 00:12:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:49,129 INFO L225 Difference]: With dead ends: 599 [2023-04-01 00:12:49,130 INFO L226 Difference]: Without dead ends: 554 [2023-04-01 00:12:49,132 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 00:12:49,139 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 867 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5578 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:49,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 115 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5578 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 00:12:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-04-01 00:12:49,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 510. [2023-04-01 00:12:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6722689075630253) internal successors, (796), 477 states have internal predecessors, (796), 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 00:12:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 829 transitions. [2023-04-01 00:12:49,178 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 829 transitions. Word has length 164 [2023-04-01 00:12:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:49,179 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 829 transitions. [2023-04-01 00:12:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 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 00:12:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 829 transitions. [2023-04-01 00:12:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-01 00:12:49,180 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:49,180 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, 1, 1] [2023-04-01 00:12:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:12:49,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:49,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1896828041, now seen corresponding path program 1 times [2023-04-01 00:12:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:49,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772295870] [2023-04-01 00:12:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:12:52,358 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 00:12:52,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:12:52,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772295870] [2023-04-01 00:12:52,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772295870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:12:52,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:12:52,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 00:12:52,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417751300] [2023-04-01 00:12:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:12:52,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 00:12:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:12:52,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 00:12:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-01 00:12:52,360 INFO L87 Difference]: Start difference. First operand 510 states and 829 transitions. Second operand has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 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 00:12:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:12:54,707 INFO L93 Difference]: Finished difference Result 605 states and 938 transitions. [2023-04-01 00:12:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 00:12:54,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 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 165 [2023-04-01 00:12:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:12:54,710 INFO L225 Difference]: With dead ends: 605 [2023-04-01 00:12:54,710 INFO L226 Difference]: Without dead ends: 560 [2023-04-01 00:12:54,710 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 00:12:54,711 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1661 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5576 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 5640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 5576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:12:54,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 109 Invalid, 5640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5576 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 00:12:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-01 00:12:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 510. [2023-04-01 00:12:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 476 states have (on average 1.6701680672268908) internal successors, (795), 477 states have internal predecessors, (795), 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 00:12:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 828 transitions. [2023-04-01 00:12:54,747 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 828 transitions. Word has length 165 [2023-04-01 00:12:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:12:54,747 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 828 transitions. [2023-04-01 00:12:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 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 00:12:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 828 transitions. [2023-04-01 00:12:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-01 00:12:54,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:12:54,749 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, 1, 1, 1, 1] [2023-04-01 00:12:54,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:12:54,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:12:54,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:12:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2000872911, now seen corresponding path program 1 times [2023-04-01 00:12:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:12:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301296659] [2023-04-01 00:12:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:12:54,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:12:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat