/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.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:41:35,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:41:35,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:41:35,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:41:35,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:41:35,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:41:35,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:41:35,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:41:35,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:41:35,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:41:35,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:41:35,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:41:35,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:41:35,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:41:35,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:41:35,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:41:35,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:41:35,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:41:35,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:41:35,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:41:35,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:41:35,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:41:35,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:41:35,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:41:35,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:41:35,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:41:35,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:41:35,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:41:35,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:41:35,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:41:35,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:41:35,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:41:35,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:41:35,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:41:35,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:41:35,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:41:35,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:41:35,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:41:35,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:41:35,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:41:35,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:41:35,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:41:35,083 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:41:35,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:41:35,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:41:35,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:41:35,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:41:35,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:41:35,084 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:41:35,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:41:35,088 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:41:35,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:41:35,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:41:35,089 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:41:35,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:41:35,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:41:35,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:41:35,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:41:35,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:41:35,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:41:35,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:41:35,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:41:35,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:41:35,282 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:41:35,283 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:41:35,284 INFO L432 ainManager$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 [2023-04-03 01:41:36,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:41:36,548 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:41:36,548 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-04-03 01:41:36,579 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbd9d783/e9574843b9214c8bb652e14194c8c7bb/FLAG3b10cbcbd [2023-04-03 01:41:36,588 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbd9d783/e9574843b9214c8bb652e14194c8c7bb [2023-04-03 01:41:36,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:41:36,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:41:36,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:41:36,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:41:36,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:41:36,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:41:36" (1/1) ... [2023-04-03 01:41:36,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f63a3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:36, skipping insertion in model container [2023-04-03 01:41:36,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:41:36" (1/1) ... [2023-04-03 01:41:36,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:41:36,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:41:36,989 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] [2023-04-03 01:41:36,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:41:37,004 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:41:37,095 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c[60915,60928] [2023-04-03 01:41:37,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:41:37,107 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:41:37,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37 WrapperNode [2023-04-03 01:41:37,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:41:37,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:41:37,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:41:37,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:41:37,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:41:37,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:41:37,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:41:37,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:41:37,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:41:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:41:37,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 01:41:37,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 01:41:37,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:41:37,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:41:37,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:41:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:41:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:41:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:41:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:41:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:41:37,458 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:41:37,459 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:41:38,613 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:41:39,460 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:41:39,460 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:41:39,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:41:39 BoogieIcfgContainer [2023-04-03 01:41:39,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:41:39,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:41:39,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:41:39,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:41:39,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:41:36" (1/3) ... [2023-04-03 01:41:39,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:41:39, skipping insertion in model container [2023-04-03 01:41:39,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (2/3) ... [2023-04-03 01:41:39,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:41:39, skipping insertion in model container [2023-04-03 01:41:39,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:41:39" (3/3) ... [2023-04-03 01:41:39,471 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.BOUNDED-10.pals.c [2023-04-03 01:41:39,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:41:39,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:41:39,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:41:39,544 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;@3e5da943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:41:39,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:41:39,550 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) [2023-04-03 01:41:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-03 01:41:39,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:41:39,573 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] [2023-04-03 01:41:39,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:41:39,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:41:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1230202245, now seen corresponding path program 1 times [2023-04-03 01:41:39,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:41:39,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406392487] [2023-04-03 01:41:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:41:39,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:41:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:41:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:41:47,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:41:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406392487] [2023-04-03 01:41:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406392487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:41:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:41:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 01:41:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464521036] [2023-04-03 01:41:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:41:47,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 01:41:47,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:41:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 01:41:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-03 01:41:47,406 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) [2023-04-03 01:41:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:41:51,407 INFO L93 Difference]: Finished difference Result 594 states and 941 transitions. [2023-04-03 01:41:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-03 01:41:51,409 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 [2023-04-03 01:41:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:41:51,440 INFO L225 Difference]: With dead ends: 594 [2023-04-03 01:41:51,440 INFO L226 Difference]: Without dead ends: 536 [2023-04-03 01:41:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-03 01:41:51,446 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6477 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:41:51,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 206 Invalid, 7470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [199 Valid, 7271 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-03 01:41:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-03 01:41:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 510. [2023-04-03 01:41:51,595 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) [2023-04-03 01:41:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 834 transitions. [2023-04-03 01:41:51,597 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 834 transitions. Word has length 160 [2023-04-03 01:41:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:41:51,600 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 834 transitions. [2023-04-03 01:41:51,600 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) [2023-04-03 01:41:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 834 transitions. [2023-04-03 01:41:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-03 01:41:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:41:51,607 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] [2023-04-03 01:41:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:41:51,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:41:51,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:41:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1326141833, now seen corresponding path program 1 times [2023-04-03 01:41:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:41:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207456489] [2023-04-03 01:41:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:41:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:41:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:41:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:41:55,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:41:55,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207456489] [2023-04-03 01:41:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207456489] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:41:55,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:41:55,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:41:55,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260235784] [2023-04-03 01:41:55,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:41:55,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:41:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:41:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:41:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:41:55,239 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) [2023-04-03 01:41:57,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:41:57,254 INFO L93 Difference]: Finished difference Result 588 states and 931 transitions. [2023-04-03 01:41:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:41:57,255 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 [2023-04-03 01:41:57,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:41:57,257 INFO L225 Difference]: With dead ends: 588 [2023-04-03 01:41:57,257 INFO L226 Difference]: Without dead ends: 538 [2023-04-03 01:41:57,258 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 [2023-04-03 01:41:57,259 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 828 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:41:57,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 118 Invalid, 6315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6291 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 01:41:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-04-03 01:41:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 510. [2023-04-03 01:41:57,304 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) [2023-04-03 01:41:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 833 transitions. [2023-04-03 01:41:57,306 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 833 transitions. Word has length 161 [2023-04-03 01:41:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:41:57,320 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 833 transitions. [2023-04-03 01:41:57,320 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) [2023-04-03 01:41:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 833 transitions. [2023-04-03 01:41:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-03 01:41:57,322 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:41:57,322 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] [2023-04-03 01:41:57,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:41:57,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:41:57,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:41:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1101409636, now seen corresponding path program 1 times [2023-04-03 01:41:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:41:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789635201] [2023-04-03 01:41:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:41:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:41:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:00,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:00,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789635201] [2023-04-03 01:42:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789635201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:00,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:00,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:00,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049346735] [2023-04-03 01:42:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:00,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:00,800 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) [2023-04-03 01:42:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:03,139 INFO L93 Difference]: Finished difference Result 599 states and 944 transitions. [2023-04-03 01:42:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:03,139 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 [2023-04-03 01:42:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:03,143 INFO L225 Difference]: With dead ends: 599 [2023-04-03 01:42:03,143 INFO L226 Difference]: Without dead ends: 549 [2023-04-03 01:42:03,146 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 [2023-04-03 01:42:03,147 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 853 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5590 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:03,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 115 Invalid, 5618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5590 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 01:42:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-04-03 01:42:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 510. [2023-04-03 01:42:03,235 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) [2023-04-03 01:42:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 831 transitions. [2023-04-03 01:42:03,236 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 831 transitions. Word has length 162 [2023-04-03 01:42:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:03,247 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 831 transitions. [2023-04-03 01:42:03,248 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) [2023-04-03 01:42:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 831 transitions. [2023-04-03 01:42:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-03 01:42:03,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:03,250 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] [2023-04-03 01:42:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:42:03,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:03,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 152805248, now seen corresponding path program 1 times [2023-04-03 01:42:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558346893] [2023-04-03 01:42:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:06,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:06,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558346893] [2023-04-03 01:42:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558346893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:06,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:06,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810732447] [2023-04-03 01:42:06,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:06,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:06,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:06,245 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) [2023-04-03 01:42:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:08,732 INFO L93 Difference]: Finished difference Result 593 states and 928 transitions. [2023-04-03 01:42:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:08,733 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 [2023-04-03 01:42:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:08,735 INFO L225 Difference]: With dead ends: 593 [2023-04-03 01:42:08,735 INFO L226 Difference]: Without dead ends: 548 [2023-04-03 01:42:08,736 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 [2023-04-03 01:42:08,736 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 855 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6355 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:08,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 122 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6355 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 01:42:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-04-03 01:42:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 510. [2023-04-03 01:42:08,774 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) [2023-04-03 01:42:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 830 transitions. [2023-04-03 01:42:08,776 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 830 transitions. Word has length 163 [2023-04-03 01:42:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:08,776 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 830 transitions. [2023-04-03 01:42:08,776 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) [2023-04-03 01:42:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 830 transitions. [2023-04-03 01:42:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-03 01:42:08,783 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:08,783 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] [2023-04-03 01:42:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:42:08,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:08,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1917551693, now seen corresponding path program 1 times [2023-04-03 01:42:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614949436] [2023-04-03 01:42:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:11,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614949436] [2023-04-03 01:42:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614949436] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:11,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:11,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:11,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113165578] [2023-04-03 01:42:11,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:11,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:11,719 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) [2023-04-03 01:42:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:14,055 INFO L93 Difference]: Finished difference Result 599 states and 933 transitions. [2023-04-03 01:42:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:14,056 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 [2023-04-03 01:42:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:14,058 INFO L225 Difference]: With dead ends: 599 [2023-04-03 01:42:14,058 INFO L226 Difference]: Without dead ends: 554 [2023-04-03 01:42:14,059 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 [2023-04-03 01:42:14,059 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 867 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5578 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 115 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5578 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 01:42:14,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-04-03 01:42:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 510. [2023-04-03 01:42:14,099 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) [2023-04-03 01:42:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 829 transitions. [2023-04-03 01:42:14,101 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 829 transitions. Word has length 164 [2023-04-03 01:42:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:14,101 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 829 transitions. [2023-04-03 01:42:14,101 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) [2023-04-03 01:42:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 829 transitions. [2023-04-03 01:42:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-03 01:42:14,103 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:14,103 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] [2023-04-03 01:42:14,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:42:14,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:14,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:14,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1896828041, now seen corresponding path program 1 times [2023-04-03 01:42:14,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:14,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840942866] [2023-04-03 01:42:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:17,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840942866] [2023-04-03 01:42:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840942866] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283038591] [2023-04-03 01:42:17,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:17,069 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) [2023-04-03 01:42:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:19,394 INFO L93 Difference]: Finished difference Result 605 states and 938 transitions. [2023-04-03 01:42:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:19,394 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 [2023-04-03 01:42:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:19,396 INFO L225 Difference]: With dead ends: 605 [2023-04-03 01:42:19,397 INFO L226 Difference]: Without dead ends: 560 [2023-04-03 01:42:19,397 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 [2023-04-03 01:42:19,398 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, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:19,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 109 Invalid, 5640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 5576 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 01:42:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-03 01:42:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 510. [2023-04-03 01:42:19,431 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) [2023-04-03 01:42:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 828 transitions. [2023-04-03 01:42:19,433 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 828 transitions. Word has length 165 [2023-04-03 01:42:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:19,433 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 828 transitions. [2023-04-03 01:42:19,433 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) [2023-04-03 01:42:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 828 transitions. [2023-04-03 01:42:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-03 01:42:19,435 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:19,435 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] [2023-04-03 01:42:19,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:42:19,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:19,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2000872911, now seen corresponding path program 1 times [2023-04-03 01:42:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:19,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255014587] [2023-04-03 01:42:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:25,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255014587] [2023-04-03 01:42:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255014587] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:25,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:25,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 01:42:25,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497720748] [2023-04-03 01:42:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 01:42:25,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 01:42:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 01:42:25,308 INFO L87 Difference]: Start difference. First operand 510 states and 828 transitions. Second operand has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:30,079 INFO L93 Difference]: Finished difference Result 612 states and 953 transitions. [2023-04-03 01:42:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-03 01:42:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 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 167 [2023-04-03 01:42:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:30,082 INFO L225 Difference]: With dead ends: 612 [2023-04-03 01:42:30,082 INFO L226 Difference]: Without dead ends: 563 [2023-04-03 01:42:30,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 01:42:30,085 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4749 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 8920 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 9059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 8920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:30,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 263 Invalid, 9059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 8920 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-03 01:42:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-04-03 01:42:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 514. [2023-04-03 01:42:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 480 states have (on average 1.6625) internal successors, (798), 481 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) [2023-04-03 01:42:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 831 transitions. [2023-04-03 01:42:30,138 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 831 transitions. Word has length 167 [2023-04-03 01:42:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:30,138 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 831 transitions. [2023-04-03 01:42:30,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 831 transitions. [2023-04-03 01:42:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-03 01:42:30,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:30,140 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, 1] [2023-04-03 01:42:30,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 01:42:30,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:30,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 589069508, now seen corresponding path program 1 times [2023-04-03 01:42:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588425740] [2023-04-03 01:42:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:31,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:31,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588425740] [2023-04-03 01:42:31,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588425740] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:31,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:31,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055290227] [2023-04-03 01:42:31,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:31,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:31,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:31,432 INFO L87 Difference]: Start difference. First operand 514 states and 831 transitions. Second operand has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:33,440 INFO L93 Difference]: Finished difference Result 591 states and 924 transitions. [2023-04-03 01:42:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 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 168 [2023-04-03 01:42:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:33,442 INFO L225 Difference]: With dead ends: 591 [2023-04-03 01:42:33,442 INFO L226 Difference]: Without dead ends: 538 [2023-04-03 01:42:33,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:33,443 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1616 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5509 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 5561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:33,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 102 Invalid, 5561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 5509 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 01:42:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-04-03 01:42:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 511. [2023-04-03 01:42:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 477 states have (on average 1.6540880503144655) internal successors, (789), 478 states have internal predecessors, (789), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 822 transitions. [2023-04-03 01:42:33,508 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 822 transitions. Word has length 168 [2023-04-03 01:42:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:33,508 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 822 transitions. [2023-04-03 01:42:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 822 transitions. [2023-04-03 01:42:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-03 01:42:33,510 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:33,510 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, 1, 1, 1] [2023-04-03 01:42:33,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 01:42:33,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:33,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1460078870, now seen corresponding path program 1 times [2023-04-03 01:42:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185747464] [2023-04-03 01:42:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:38,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185747464] [2023-04-03 01:42:38,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185747464] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:38,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:38,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 01:42:38,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854486879] [2023-04-03 01:42:38,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:38,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 01:42:38,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:38,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 01:42:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 01:42:38,979 INFO L87 Difference]: Start difference. First operand 511 states and 822 transitions. Second operand has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:42,699 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2023-04-03 01:42:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-03 01:42:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 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 170 [2023-04-03 01:42:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:42,701 INFO L225 Difference]: With dead ends: 618 [2023-04-03 01:42:42,701 INFO L226 Difference]: Without dead ends: 571 [2023-04-03 01:42:42,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 01:42:42,702 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6353 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6552 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6357 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 6746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 6552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:42,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6357 Valid, 216 Invalid, 6746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 6552 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-03 01:42:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-04-03 01:42:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 511. [2023-04-03 01:42:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 477 states have (on average 1.6519916142557651) internal successors, (788), 478 states have internal predecessors, (788), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 821 transitions. [2023-04-03 01:42:42,751 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 821 transitions. Word has length 170 [2023-04-03 01:42:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:42,751 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 821 transitions. [2023-04-03 01:42:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 821 transitions. [2023-04-03 01:42:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-03 01:42:42,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:42,755 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, 1, 1, 1, 1] [2023-04-03 01:42:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 01:42:42,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:42,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1866341653, now seen corresponding path program 1 times [2023-04-03 01:42:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074634174] [2023-04-03 01:42:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:46,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074634174] [2023-04-03 01:42:46,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074634174] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:46,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 01:42:46,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723994338] [2023-04-03 01:42:46,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:46,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 01:42:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 01:42:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:42:46,007 INFO L87 Difference]: Start difference. First operand 511 states and 821 transitions. Second operand has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:42:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:46,582 INFO L93 Difference]: Finished difference Result 551 states and 871 transitions. [2023-04-03 01:42:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 01:42:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 171 [2023-04-03 01:42:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:46,585 INFO L225 Difference]: With dead ends: 551 [2023-04-03 01:42:46,585 INFO L226 Difference]: Without dead ends: 549 [2023-04-03 01:42:46,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-04-03 01:42:46,586 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 40 mSDsluCounter, 7941 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8669 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 8669 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 01:42:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-04-03 01:42:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 520. [2023-04-03 01:42:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 483 states have (on average 1.6438923395445135) internal successors, (794), 485 states have internal predecessors, (794), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18) [2023-04-03 01:42:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 830 transitions. [2023-04-03 01:42:46,628 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 830 transitions. Word has length 171 [2023-04-03 01:42:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 830 transitions. [2023-04-03 01:42:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:42:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 830 transitions. [2023-04-03 01:42:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-04-03 01:42:46,629 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:46,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:46,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 01:42:46,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:46,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:46,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1261410580, now seen corresponding path program 1 times [2023-04-03 01:42:46,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:46,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113033656] [2023-04-03 01:42:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:42:56,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113033656] [2023-04-03 01:42:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113033656] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:42:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846604273] [2023-04-03 01:42:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:56,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:42:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:42:56,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:42:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:42:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:56,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 118 conjunts are in the unsatisfiable core [2023-04-03 01:42:56,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:43:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:43:30,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:43:31,221 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 10639 disjunctions. This might take some time... [2023-04-03 01:43:37,616 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 10639 disjunctions.