/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-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:47:02,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:47:02,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:47:02,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:47:02,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:47:02,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:47:02,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:47:02,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:47:02,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:47:02,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:47:02,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:47:02,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:47:02,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:47:02,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:47:02,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:47:02,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:47:02,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:47:02,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:47:02,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:47:02,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:47:02,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:47:02,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:47:02,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:47:02,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:47:02,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:47:02,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:47:02,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:47:02,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:47:02,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:47:02,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:47:02,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:47:02,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:47:02,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:47:02,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:47:02,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:47:02,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:47:02,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:47:02,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:47:02,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:47:02,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:47:02,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:47:02,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:47:02,256 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:47:02,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:47:02,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:47:02,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:47:02,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:47:02,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:47:02,258 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:47:02,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:47:02,259 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:47:02,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:47:02,260 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:47:02,260 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:47:02,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:47:02,261 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:47:02,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:47:02,262 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:47:02,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:47:02,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:47:02,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:47:02,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:47:02,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:47:02,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:47:02,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:47:02,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:47:02,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:47:02,480 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:47:02,480 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:47:02,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:47:03,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:47:04,354 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:47:04,355 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:47:04,414 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f6f2592/6c89e432762c4653aa82cfc90d104ce5/FLAG32b262c75 [2023-04-01 06:47:04,429 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f6f2592/6c89e432762c4653aa82cfc90d104ce5 [2023-04-01 06:47:04,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:47:04,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:47:04,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:47:04,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:47:04,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:47:04,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:47:04" (1/1) ... [2023-04-01 06:47:04,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0de624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:04, skipping insertion in model container [2023-04-01 06:47:04,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:47:04" (1/1) ... [2023-04-01 06:47:04,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:47:04,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:47:05,510 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-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683] [2023-04-01 06:47:07,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:47:07,924 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:47:08,176 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-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683] [2023-04-01 06:47:10,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:47:10,074 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:47:10,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10 WrapperNode [2023-04-01 06:47:10,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:47:10,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:47:10,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:47:10,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:47:10,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,557 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:47:10,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:47:10,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:47:10,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:47:10,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (1/1) ... [2023-04-01 06:47:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:47:10,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:47:10,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:47:10,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:47:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:47:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:47:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:47:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:47:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:47:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:47:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:47:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:47:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:47:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:47:10,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:47:11,136 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:47:11,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:47:20,168 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:47:33,350 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:47:33,351 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:47:33,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:47:33 BoogieIcfgContainer [2023-04-01 06:47:33,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:47:33,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:47:33,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:47:33,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:47:33,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:47:04" (1/3) ... [2023-04-01 06:47:33,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b45ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:47:33, skipping insertion in model container [2023-04-01 06:47:33,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:47:10" (2/3) ... [2023-04-01 06:47:33,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b45ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:47:33, skipping insertion in model container [2023-04-01 06:47:33,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:47:33" (3/3) ... [2023-04-01 06:47:33,365 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-01 06:47:33,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:47:33,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:47:33,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:47:33,512 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;@1f458883, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:47:33,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:47:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 5217 states, 5203 states have (on average 1.70344032289064) internal successors, (8863), 5212 states have internal predecessors, (8863), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:47:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-01 06:47:33,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:33,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:33,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:33,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1041398683, now seen corresponding path program 1 times [2023-04-01 06:47:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:33,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628616826] [2023-04-01 06:47:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:47:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:47:34,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:47:34,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628616826] [2023-04-01 06:47:34,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628616826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:47:34,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:47:34,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:47:34,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294512162] [2023-04-01 06:47:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:47:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:47:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:47:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:47:34,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:34,875 INFO L87 Difference]: Start difference. First operand has 5217 states, 5203 states have (on average 1.70344032289064) internal successors, (8863), 5212 states have internal predecessors, (8863), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:47:36,236 INFO L93 Difference]: Finished difference Result 10190 states and 17126 transitions. [2023-04-01 06:47:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:47:36,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 294 [2023-04-01 06:47:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:47:36,283 INFO L225 Difference]: With dead ends: 10190 [2023-04-01 06:47:36,283 INFO L226 Difference]: Without dead ends: 6096 [2023-04-01 06:47:36,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:36,302 INFO L413 NwaCegarLoop]: 7889 mSDtfsCounter, 5753 mSDsluCounter, 4362 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5753 SdHoareTripleChecker+Valid, 12251 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:47:36,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5753 Valid, 12251 Invalid, 370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:47:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2023-04-01 06:47:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 6094. [2023-04-01 06:47:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 6090 states have (on average 1.600328407224959) internal successors, (9746), 6090 states have internal predecessors, (9746), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 9749 transitions. [2023-04-01 06:47:36,712 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 9749 transitions. Word has length 294 [2023-04-01 06:47:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:47:36,718 INFO L495 AbstractCegarLoop]: Abstraction has 6094 states and 9749 transitions. [2023-04-01 06:47:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 9749 transitions. [2023-04-01 06:47:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-04-01 06:47:36,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:36,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:36,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:47:36,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:36,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash 848284702, now seen corresponding path program 1 times [2023-04-01 06:47:36,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:36,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042368525] [2023-04-01 06:47:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:36,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:47:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:47:37,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:47:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042368525] [2023-04-01 06:47:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042368525] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:47:37,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:47:37,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:47:37,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316387614] [2023-04-01 06:47:37,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:47:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:47:37,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:47:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:47:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:37,212 INFO L87 Difference]: Start difference. First operand 6094 states and 9749 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:47:38,535 INFO L93 Difference]: Finished difference Result 13218 states and 21268 transitions. [2023-04-01 06:47:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:47:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 304 [2023-04-01 06:47:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:47:38,584 INFO L225 Difference]: With dead ends: 13218 [2023-04-01 06:47:38,585 INFO L226 Difference]: Without dead ends: 7970 [2023-04-01 06:47:38,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:38,608 INFO L413 NwaCegarLoop]: 6769 mSDtfsCounter, 5589 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5589 SdHoareTripleChecker+Valid, 10297 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:47:38,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5589 Valid, 10297 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:47:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2023-04-01 06:47:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 7968. [2023-04-01 06:47:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7968 states, 7964 states have (on average 1.6077348066298343) internal successors, (12804), 7964 states have internal predecessors, (12804), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7968 states to 7968 states and 12807 transitions. [2023-04-01 06:47:39,208 INFO L78 Accepts]: Start accepts. Automaton has 7968 states and 12807 transitions. Word has length 304 [2023-04-01 06:47:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:47:39,209 INFO L495 AbstractCegarLoop]: Abstraction has 7968 states and 12807 transitions. [2023-04-01 06:47:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7968 states and 12807 transitions. [2023-04-01 06:47:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-04-01 06:47:39,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:39,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:39,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:47:39,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:39,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:39,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1151485055, now seen corresponding path program 1 times [2023-04-01 06:47:39,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:39,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993888507] [2023-04-01 06:47:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:39,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:47:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:47:39,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:47:39,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993888507] [2023-04-01 06:47:39,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993888507] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:47:39,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:47:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:47:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813671478] [2023-04-01 06:47:39,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:47:39,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:47:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:47:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:47:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:39,587 INFO L87 Difference]: Start difference. First operand 7968 states and 12807 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:47:41,316 INFO L93 Difference]: Finished difference Result 18236 states and 29312 transitions. [2023-04-01 06:47:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:47:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 314 [2023-04-01 06:47:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:47:41,369 INFO L225 Difference]: With dead ends: 18236 [2023-04-01 06:47:41,369 INFO L226 Difference]: Without dead ends: 10977 [2023-04-01 06:47:41,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:41,389 INFO L413 NwaCegarLoop]: 6533 mSDtfsCounter, 5543 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 9846 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:47:41,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5543 Valid, 9846 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:47:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10977 states. [2023-04-01 06:47:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10977 to 10975. [2023-04-01 06:47:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10975 states, 10971 states have (on average 1.602862090967095) internal successors, (17585), 10971 states have internal predecessors, (17585), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10975 states to 10975 states and 17588 transitions. [2023-04-01 06:47:42,110 INFO L78 Accepts]: Start accepts. Automaton has 10975 states and 17588 transitions. Word has length 314 [2023-04-01 06:47:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:47:42,110 INFO L495 AbstractCegarLoop]: Abstraction has 10975 states and 17588 transitions. [2023-04-01 06:47:42,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10975 states and 17588 transitions. [2023-04-01 06:47:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-01 06:47:42,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:42,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:42,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:47:42,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:42,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1780874766, now seen corresponding path program 1 times [2023-04-01 06:47:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:42,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841971575] [2023-04-01 06:47:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:47:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:47:42,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:47:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841971575] [2023-04-01 06:47:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841971575] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:47:42,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:47:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:47:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804059593] [2023-04-01 06:47:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:47:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:47:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:47:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:47:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:42,551 INFO L87 Difference]: Start difference. First operand 10975 states and 17588 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:47:44,359 INFO L93 Difference]: Finished difference Result 25839 states and 41265 transitions. [2023-04-01 06:47:44,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:47:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 324 [2023-04-01 06:47:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:47:44,409 INFO L225 Difference]: With dead ends: 25839 [2023-04-01 06:47:44,409 INFO L226 Difference]: Without dead ends: 15518 [2023-04-01 06:47:44,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:44,433 INFO L413 NwaCegarLoop]: 7110 mSDtfsCounter, 5414 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 10338 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:47:44,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 10338 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:47:44,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15518 states. [2023-04-01 06:47:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15518 to 15516. [2023-04-01 06:47:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15516 states, 15512 states have (on average 1.5876740587931923) internal successors, (24628), 15512 states have internal predecessors, (24628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15516 states to 15516 states and 24631 transitions. [2023-04-01 06:47:45,469 INFO L78 Accepts]: Start accepts. Automaton has 15516 states and 24631 transitions. Word has length 324 [2023-04-01 06:47:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:47:45,470 INFO L495 AbstractCegarLoop]: Abstraction has 15516 states and 24631 transitions. [2023-04-01 06:47:45,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15516 states and 24631 transitions. [2023-04-01 06:47:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-04-01 06:47:45,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:45,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:47:45,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:45,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 771604754, now seen corresponding path program 1 times [2023-04-01 06:47:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600017333] [2023-04-01 06:47:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:47:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:47:45,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:47:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600017333] [2023-04-01 06:47:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600017333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:47:45,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:47:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:47:45,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525326668] [2023-04-01 06:47:45,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:47:45,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:47:45,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:47:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:47:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:45,867 INFO L87 Difference]: Start difference. First operand 15516 states and 24631 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:47:47,960 INFO L93 Difference]: Finished difference Result 37236 states and 58844 transitions. [2023-04-01 06:47:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:47:47,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 334 [2023-04-01 06:47:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:47:48,009 INFO L225 Difference]: With dead ends: 37236 [2023-04-01 06:47:48,009 INFO L226 Difference]: Without dead ends: 22360 [2023-04-01 06:47:48,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:47:48,037 INFO L413 NwaCegarLoop]: 6346 mSDtfsCounter, 5445 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 9574 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:47:48,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 9574 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:47:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2023-04-01 06:47:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 22358. [2023-04-01 06:47:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22358 states, 22354 states have (on average 1.5637917151292833) internal successors, (34957), 22354 states have internal predecessors, (34957), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22358 states to 22358 states and 34960 transitions. [2023-04-01 06:47:49,444 INFO L78 Accepts]: Start accepts. Automaton has 22358 states and 34960 transitions. Word has length 334 [2023-04-01 06:47:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:47:49,445 INFO L495 AbstractCegarLoop]: Abstraction has 22358 states and 34960 transitions. [2023-04-01 06:47:49,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:47:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 22358 states and 34960 transitions. [2023-04-01 06:47:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-04-01 06:47:49,480 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:47:49,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:47:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:47:49,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:47:49,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:47:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1934519643, now seen corresponding path program 1 times [2023-04-01 06:47:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:47:49,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871275218] [2023-04-01 06:47:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:47:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:47:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat