/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/systemc/mem_slave_tlm.1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:08:45,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:08:45,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:08:45,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:08:45,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:08:45,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:08:45,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:08:45,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:08:45,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:08:45,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:08:45,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:08:45,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:08:45,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:08:45,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:08:45,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:08:45,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:08:45,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:08:45,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:08:45,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:08:45,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:08:45,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:08:45,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:08:45,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:08:45,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:08:45,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:08:45,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:08:45,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:08:45,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:08:45,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:08:45,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:08:45,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:08:45,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:08:45,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:08:45,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:08:45,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:08:45,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:08:45,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:08:45,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:08:45,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:08:45,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:08:45,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:08:45,431 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 06:08:45,453 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:08:45,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:08:45,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:08:45,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:08:45,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:08:45,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:08:45,454 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:08:45,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:08:45,455 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:08:45,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:08:45,455 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:08:45,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:08:45,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:08:45,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:08:45,456 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:08:45,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:08:45,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:08:45,456 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:08:45,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:08:45,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:08:45,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:08:45,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:08:45,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:08:45,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:08:45,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:08:45,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:08:45,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:08:45,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:08:45,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:08:45,661 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:08:45,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/mem_slave_tlm.1.cil.c [2023-04-01 06:08:46,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:08:46,823 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:08:46,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.1.cil.c [2023-04-01 06:08:46,832 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e484c581/a0cd0da1d8fc47cfa178b394c8fb90be/FLAG8bdc20fc7 [2023-04-01 06:08:46,841 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e484c581/a0cd0da1d8fc47cfa178b394c8fb90be [2023-04-01 06:08:46,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:08:46,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:08:46,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:08:46,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:08:46,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:08:46,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:08:46" (1/1) ... [2023-04-01 06:08:46,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f28269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:46, skipping insertion in model container [2023-04-01 06:08:46,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:08:46" (1/1) ... [2023-04-01 06:08:46,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:08:46,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:08:46,955 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/systemc/mem_slave_tlm.1.cil.c[646,659] [2023-04-01 06:08:47,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:08:47,017 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:08:47,023 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/systemc/mem_slave_tlm.1.cil.c[646,659] [2023-04-01 06:08:47,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:08:47,072 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:08:47,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47 WrapperNode [2023-04-01 06:08:47,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:08:47,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:08:47,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:08:47,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:08:47,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:08:47,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:08:47,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:08:47,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:08:47,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (1/1) ... [2023-04-01 06:08:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:08:47,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:08:47,137 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 06:08:47,139 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 06:08:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-04-01 06:08:47,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:08:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:08:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:08:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:08:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:08:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:08:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:08:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:08:47,242 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:08:47,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:08:47,801 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:08:47,880 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:08:47,880 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-04-01 06:08:47,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:08:47 BoogieIcfgContainer [2023-04-01 06:08:47,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:08:47,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:08:47,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:08:47,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:08:47,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:08:46" (1/3) ... [2023-04-01 06:08:47,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf16927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:08:47, skipping insertion in model container [2023-04-01 06:08:47,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:08:47" (2/3) ... [2023-04-01 06:08:47,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf16927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:08:47, skipping insertion in model container [2023-04-01 06:08:47,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:08:47" (3/3) ... [2023-04-01 06:08:47,889 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.1.cil.c [2023-04-01 06:08:47,899 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:08:47,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:08:47,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:08:47,945 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;@2061de3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:08:47,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:08:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 229 states have (on average 1.737991266375546) internal successors, (398), 237 states have internal predecessors, (398), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-01 06:08:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 06:08:47,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:47,962 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] [2023-04-01 06:08:47,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:47,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 870207591, now seen corresponding path program 1 times [2023-04-01 06:08:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739963755] [2023-04-01 06:08:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:48,336 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 06:08:48,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:48,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739963755] [2023-04-01 06:08:48,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739963755] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:48,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:48,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:08:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315593842] [2023-04-01 06:08:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:08:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:08:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:08:48,377 INFO L87 Difference]: Start difference. First operand has 253 states, 229 states have (on average 1.737991266375546) internal successors, (398), 237 states have internal predecessors, (398), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:48,720 INFO L93 Difference]: Finished difference Result 672 states and 1132 transitions. [2023-04-01 06:08:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:08:48,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-04-01 06:08:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:48,728 INFO L225 Difference]: With dead ends: 672 [2023-04-01 06:08:48,728 INFO L226 Difference]: Without dead ends: 415 [2023-04-01 06:08:48,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:08:48,734 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 233 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:48,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 584 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:08:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-04-01 06:08:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 408. [2023-04-01 06:08:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 378 states have (on average 1.5) internal successors, (567), 386 states have internal predecessors, (567), 18 states have call successors, (18), 14 states have call predecessors, (18), 11 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2023-04-01 06:08:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 600 transitions. [2023-04-01 06:08:48,776 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 600 transitions. Word has length 34 [2023-04-01 06:08:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:48,777 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 600 transitions. [2023-04-01 06:08:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 600 transitions. [2023-04-01 06:08:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 06:08:48,779 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:48,779 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] [2023-04-01 06:08:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:08:48,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:48,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1269552661, now seen corresponding path program 1 times [2023-04-01 06:08:48,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:48,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267637573] [2023-04-01 06:08:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:48,883 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 06:08:48,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267637573] [2023-04-01 06:08:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267637573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 06:08:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735044347] [2023-04-01 06:08:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 06:08:48,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 06:08:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:08:48,888 INFO L87 Difference]: Start difference. First operand 408 states and 600 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:49,200 INFO L93 Difference]: Finished difference Result 1338 states and 1975 transitions. [2023-04-01 06:08:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 06:08:49,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-04-01 06:08:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:49,204 INFO L225 Difference]: With dead ends: 1338 [2023-04-01 06:08:49,204 INFO L226 Difference]: Without dead ends: 944 [2023-04-01 06:08:49,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:08:49,206 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 647 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:49,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 833 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:08:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-04-01 06:08:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 886. [2023-04-01 06:08:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 832 states have (on average 1.4254807692307692) internal successors, (1186), 845 states have internal predecessors, (1186), 30 states have call successors, (30), 26 states have call predecessors, (30), 23 states have return successors, (52), 23 states have call predecessors, (52), 23 states have call successors, (52) [2023-04-01 06:08:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1268 transitions. [2023-04-01 06:08:49,285 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1268 transitions. Word has length 45 [2023-04-01 06:08:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:49,285 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1268 transitions. [2023-04-01 06:08:49,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1268 transitions. [2023-04-01 06:08:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 06:08:49,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:49,292 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] [2023-04-01 06:08:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:08:49,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:49,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash 100964629, now seen corresponding path program 1 times [2023-04-01 06:08:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:49,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021461956] [2023-04-01 06:08:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:49,364 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 06:08:49,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021461956] [2023-04-01 06:08:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021461956] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:49,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:08:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877783873] [2023-04-01 06:08:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:49,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:08:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:08:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:08:49,368 INFO L87 Difference]: Start difference. First operand 886 states and 1268 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:49,539 INFO L93 Difference]: Finished difference Result 2255 states and 3350 transitions. [2023-04-01 06:08:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:08:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2023-04-01 06:08:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:49,544 INFO L225 Difference]: With dead ends: 2255 [2023-04-01 06:08:49,544 INFO L226 Difference]: Without dead ends: 1384 [2023-04-01 06:08:49,547 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 06:08:49,547 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 267 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:49,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 774 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:08:49,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2023-04-01 06:08:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1377. [2023-04-01 06:08:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1292 states have (on average 1.4659442724458205) internal successors, (1894), 1311 states have internal predecessors, (1894), 47 states have call successors, (47), 43 states have call predecessors, (47), 37 states have return successors, (96), 37 states have call predecessors, (96), 40 states have call successors, (96) [2023-04-01 06:08:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2037 transitions. [2023-04-01 06:08:49,607 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2037 transitions. Word has length 45 [2023-04-01 06:08:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:49,607 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 2037 transitions. [2023-04-01 06:08:49,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2037 transitions. [2023-04-01 06:08:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 06:08:49,608 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:49,608 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] [2023-04-01 06:08:49,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:08:49,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:49,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash 529206740, now seen corresponding path program 1 times [2023-04-01 06:08:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934959778] [2023-04-01 06:08:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:49,695 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 06:08:49,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934959778] [2023-04-01 06:08:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934959778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:08:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557314285] [2023-04-01 06:08:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:08:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:08:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:08:49,697 INFO L87 Difference]: Start difference. First operand 1377 states and 2037 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:49,844 INFO L93 Difference]: Finished difference Result 3313 states and 5224 transitions. [2023-04-01 06:08:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:08:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-04-01 06:08:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:49,852 INFO L225 Difference]: With dead ends: 3313 [2023-04-01 06:08:49,852 INFO L226 Difference]: Without dead ends: 2071 [2023-04-01 06:08:49,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:08:49,857 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 294 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:49,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 623 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:08:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-04-01 06:08:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2032. [2023-04-01 06:08:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1908 states have (on average 1.4774633123689727) internal successors, (2819), 1938 states have internal predecessors, (2819), 70 states have call successors, (70), 66 states have call predecessors, (70), 53 states have return successors, (277), 53 states have call predecessors, (277), 63 states have call successors, (277) [2023-04-01 06:08:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 3166 transitions. [2023-04-01 06:08:49,941 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 3166 transitions. Word has length 46 [2023-04-01 06:08:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:49,942 INFO L495 AbstractCegarLoop]: Abstraction has 2032 states and 3166 transitions. [2023-04-01 06:08:49,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 3166 transitions. [2023-04-01 06:08:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 06:08:49,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:49,944 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:08:49,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:08:49,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:49,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -842672362, now seen corresponding path program 1 times [2023-04-01 06:08:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682425558] [2023-04-01 06:08:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:08:50,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:50,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682425558] [2023-04-01 06:08:50,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682425558] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:50,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:50,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:08:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047066944] [2023-04-01 06:08:50,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:50,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:08:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:08:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:08:50,063 INFO L87 Difference]: Start difference. First operand 2032 states and 3166 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:08:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:51,684 INFO L93 Difference]: Finished difference Result 9987 states and 19506 transitions. [2023-04-01 06:08:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 06:08:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2023-04-01 06:08:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:51,759 INFO L225 Difference]: With dead ends: 9987 [2023-04-01 06:08:51,759 INFO L226 Difference]: Without dead ends: 8142 [2023-04-01 06:08:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-04-01 06:08:51,792 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1844 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:51,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 2284 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:08:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2023-04-01 06:08:52,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 7288. [2023-04-01 06:08:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7288 states, 6623 states have (on average 1.47516231315114) internal successors, (9770), 6926 states have internal predecessors, (9770), 395 states have call successors, (395), 258 states have call predecessors, (395), 269 states have return successors, (3743), 320 states have call predecessors, (3743), 388 states have call successors, (3743) [2023-04-01 06:08:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7288 states to 7288 states and 13908 transitions. [2023-04-01 06:08:52,305 INFO L78 Accepts]: Start accepts. Automaton has 7288 states and 13908 transitions. Word has length 54 [2023-04-01 06:08:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 7288 states and 13908 transitions. [2023-04-01 06:08:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:08:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7288 states and 13908 transitions. [2023-04-01 06:08:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 06:08:52,307 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:52,307 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] [2023-04-01 06:08:52,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:08:52,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:52,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -549330824, now seen corresponding path program 1 times [2023-04-01 06:08:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:52,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644536736] [2023-04-01 06:08:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:52,472 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 06:08:52,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644536736] [2023-04-01 06:08:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644536736] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:08:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71580859] [2023-04-01 06:08:52,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:52,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:08:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:08:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:08:52,474 INFO L87 Difference]: Start difference. First operand 7288 states and 13908 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:53,167 INFO L93 Difference]: Finished difference Result 17126 states and 38652 transitions. [2023-04-01 06:08:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:08:53,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-01 06:08:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:53,240 INFO L225 Difference]: With dead ends: 17126 [2023-04-01 06:08:53,240 INFO L226 Difference]: Without dead ends: 9905 [2023-04-01 06:08:53,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:08:53,372 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 306 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:53,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 548 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:08:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9905 states. [2023-04-01 06:08:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9905 to 9401. [2023-04-01 06:08:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9401 states, 8464 states have (on average 1.4693998109640831) internal successors, (12437), 8869 states have internal predecessors, (12437), 581 states have call successors, (581), 379 states have call predecessors, (581), 355 states have return successors, (6781), 407 states have call predecessors, (6781), 574 states have call successors, (6781) [2023-04-01 06:08:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 19799 transitions. [2023-04-01 06:08:54,240 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 19799 transitions. Word has length 58 [2023-04-01 06:08:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:08:54,241 INFO L495 AbstractCegarLoop]: Abstraction has 9401 states and 19799 transitions. [2023-04-01 06:08:54,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:08:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 19799 transitions. [2023-04-01 06:08:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 06:08:54,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:08:54,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 06:08:54,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:08:54,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:08:54,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:08:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2084764829, now seen corresponding path program 1 times [2023-04-01 06:08:54,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:08:54,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228209794] [2023-04-01 06:08:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:08:54,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:08:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:08:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:08:54,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:08:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228209794] [2023-04-01 06:08:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228209794] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:08:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:08:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:08:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645051383] [2023-04-01 06:08:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:08:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:08:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:08:54,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:08:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:08:54,521 INFO L87 Difference]: Start difference. First operand 9401 states and 19799 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 06:08:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:08:57,388 INFO L93 Difference]: Finished difference Result 39390 states and 85170 transitions. [2023-04-01 06:08:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 06:08:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 85 [2023-04-01 06:08:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:08:57,594 INFO L225 Difference]: With dead ends: 39390 [2023-04-01 06:08:57,595 INFO L226 Difference]: Without dead ends: 30004 [2023-04-01 06:08:57,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-04-01 06:08:57,761 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 1756 mSDsluCounter, 4260 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:08:57,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 5305 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:08:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30004 states. [2023-04-01 06:09:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30004 to 26965. [2023-04-01 06:09:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26965 states, 24830 states have (on average 1.446033024567056) internal successors, (35905), 25927 states have internal predecessors, (35905), 1354 states have call successors, (1354), 543 states have call predecessors, (1354), 780 states have return successors, (15541), 1090 states have call predecessors, (15541), 1347 states have call successors, (15541) [2023-04-01 06:09:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26965 states to 26965 states and 52800 transitions. [2023-04-01 06:09:00,380 INFO L78 Accepts]: Start accepts. Automaton has 26965 states and 52800 transitions. Word has length 85 [2023-04-01 06:09:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:00,381 INFO L495 AbstractCegarLoop]: Abstraction has 26965 states and 52800 transitions. [2023-04-01 06:09:00,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 06:09:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 26965 states and 52800 transitions. [2023-04-01 06:09:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 06:09:00,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:00,385 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] [2023-04-01 06:09:00,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:09:00,385 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:00,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1654221679, now seen corresponding path program 1 times [2023-04-01 06:09:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849822448] [2023-04-01 06:09:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:00,446 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 06:09:00,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:00,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849822448] [2023-04-01 06:09:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849822448] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:09:00,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:09:00,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:09:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170133558] [2023-04-01 06:09:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:09:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:09:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:09:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:09:00,451 INFO L87 Difference]: Start difference. First operand 26965 states and 52800 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:04,142 INFO L93 Difference]: Finished difference Result 65025 states and 151342 transitions. [2023-04-01 06:09:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:09:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-04-01 06:09:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:04,573 INFO L225 Difference]: With dead ends: 65025 [2023-04-01 06:09:04,573 INFO L226 Difference]: Without dead ends: 38101 [2023-04-01 06:09:05,353 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 06:09:05,354 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 218 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 660 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:09:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38101 states. [2023-04-01 06:09:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38101 to 36933. [2023-04-01 06:09:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36933 states, 33919 states have (on average 1.38415047613432) internal successors, (46949), 35516 states have internal predecessors, (46949), 1871 states have call successors, (1871), 744 states have call predecessors, (1871), 1142 states have return successors, (26963), 1471 states have call predecessors, (26963), 1864 states have call successors, (26963) [2023-04-01 06:09:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36933 states to 36933 states and 75783 transitions. [2023-04-01 06:09:09,293 INFO L78 Accepts]: Start accepts. Automaton has 36933 states and 75783 transitions. Word has length 67 [2023-04-01 06:09:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:09,293 INFO L495 AbstractCegarLoop]: Abstraction has 36933 states and 75783 transitions. [2023-04-01 06:09:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 36933 states and 75783 transitions. [2023-04-01 06:09:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 06:09:09,296 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:09,296 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] [2023-04-01 06:09:09,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:09:09,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:09,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1796516163, now seen corresponding path program 1 times [2023-04-01 06:09:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:09,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67403176] [2023-04-01 06:09:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:09,382 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 06:09:09,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67403176] [2023-04-01 06:09:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67403176] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:09:09,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:09:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:09:09,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077089585] [2023-04-01 06:09:09,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:09:09,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:09:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:09:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:09:09,384 INFO L87 Difference]: Start difference. First operand 36933 states and 75783 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:09:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:13,375 INFO L93 Difference]: Finished difference Result 72845 states and 168316 transitions. [2023-04-01 06:09:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:09:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2023-04-01 06:09:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:13,818 INFO L225 Difference]: With dead ends: 72845 [2023-04-01 06:09:13,819 INFO L226 Difference]: Without dead ends: 35953 [2023-04-01 06:09:14,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:09:14,899 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 310 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:14,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 348 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:09:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35953 states. [2023-04-01 06:09:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35953 to 35953. [2023-04-01 06:09:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35953 states, 32939 states have (on average 1.3756033880809981) internal successors, (45311), 34536 states have internal predecessors, (45311), 1871 states have call successors, (1871), 744 states have call predecessors, (1871), 1142 states have return successors, (26799), 1471 states have call predecessors, (26799), 1864 states have call successors, (26799) [2023-04-01 06:09:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35953 states to 35953 states and 73981 transitions. [2023-04-01 06:09:18,883 INFO L78 Accepts]: Start accepts. Automaton has 35953 states and 73981 transitions. Word has length 69 [2023-04-01 06:09:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:18,884 INFO L495 AbstractCegarLoop]: Abstraction has 35953 states and 73981 transitions. [2023-04-01 06:09:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 06:09:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 35953 states and 73981 transitions. [2023-04-01 06:09:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 06:09:18,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:18,888 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] [2023-04-01 06:09:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:09:18,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:18,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1268797428, now seen corresponding path program 1 times [2023-04-01 06:09:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271546129] [2023-04-01 06:09:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:18,931 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 06:09:18,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271546129] [2023-04-01 06:09:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271546129] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:09:18,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:09:18,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:09:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688936811] [2023-04-01 06:09:18,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:09:18,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:09:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:09:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:09:18,933 INFO L87 Difference]: Start difference. First operand 35953 states and 73981 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:21,909 INFO L93 Difference]: Finished difference Result 68469 states and 147854 transitions. [2023-04-01 06:09:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:09:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-04-01 06:09:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:22,137 INFO L225 Difference]: With dead ends: 68469 [2023-04-01 06:09:22,137 INFO L226 Difference]: Without dead ends: 32534 [2023-04-01 06:09:23,024 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 06:09:23,024 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 131 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:23,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 708 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:09:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32534 states. [2023-04-01 06:09:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32534 to 29218. [2023-04-01 06:09:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29218 states, 27082 states have (on average 1.3717598404844547) internal successors, (37150), 28236 states have internal predecessors, (37150), 1277 states have call successors, (1277), 549 states have call predecessors, (1277), 858 states have return successors, (15948), 916 states have call predecessors, (15948), 1270 states have call successors, (15948) [2023-04-01 06:09:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29218 states to 29218 states and 54375 transitions. [2023-04-01 06:09:25,592 INFO L78 Accepts]: Start accepts. Automaton has 29218 states and 54375 transitions. Word has length 70 [2023-04-01 06:09:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:25,592 INFO L495 AbstractCegarLoop]: Abstraction has 29218 states and 54375 transitions. [2023-04-01 06:09:25,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29218 states and 54375 transitions. [2023-04-01 06:09:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:09:25,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:25,595 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] [2023-04-01 06:09:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:09:25,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:25,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1583670742, now seen corresponding path program 1 times [2023-04-01 06:09:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451013568] [2023-04-01 06:09:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:25,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:25,682 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 06:09:25,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:25,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451013568] [2023-04-01 06:09:25,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451013568] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:09:25,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:09:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:09:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950226414] [2023-04-01 06:09:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:09:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:09:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:09:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:09:25,683 INFO L87 Difference]: Start difference. First operand 29218 states and 54375 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:29,970 INFO L93 Difference]: Finished difference Result 77719 states and 173348 transitions. [2023-04-01 06:09:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:09:29,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2023-04-01 06:09:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:30,366 INFO L225 Difference]: With dead ends: 77719 [2023-04-01 06:09:30,366 INFO L226 Difference]: Without dead ends: 48850 [2023-04-01 06:09:31,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:09:31,004 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 813 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:31,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2245 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:09:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48850 states. [2023-04-01 06:09:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48850 to 46465. [2023-04-01 06:09:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46465 states, 42629 states have (on average 1.3771376293133781) internal successors, (58706), 44693 states have internal predecessors, (58706), 2300 states have call successors, (2300), 1008 states have call predecessors, (2300), 1535 states have return successors, (44059), 1616 states have call predecessors, (44059), 2293 states have call successors, (44059) [2023-04-01 06:09:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46465 states to 46465 states and 105065 transitions. [2023-04-01 06:09:37,726 INFO L78 Accepts]: Start accepts. Automaton has 46465 states and 105065 transitions. Word has length 72 [2023-04-01 06:09:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:09:37,726 INFO L495 AbstractCegarLoop]: Abstraction has 46465 states and 105065 transitions. [2023-04-01 06:09:37,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 46465 states and 105065 transitions. [2023-04-01 06:09:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:09:37,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:09:37,729 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] [2023-04-01 06:09:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:09:37,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:09:37,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:09:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1303329221, now seen corresponding path program 1 times [2023-04-01 06:09:37,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:09:37,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929422945] [2023-04-01 06:09:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:09:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:09:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:09:37,815 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 06:09:37,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:09:37,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929422945] [2023-04-01 06:09:37,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929422945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:09:37,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:09:37,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:09:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235782186] [2023-04-01 06:09:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:09:37,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:09:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:09:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:09:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:09:37,817 INFO L87 Difference]: Start difference. First operand 46465 states and 105065 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 06:09:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:09:41,718 INFO L93 Difference]: Finished difference Result 50869 states and 114479 transitions. [2023-04-01 06:09:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 06:09:41,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2023-04-01 06:09:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:09:42,022 INFO L225 Difference]: With dead ends: 50869 [2023-04-01 06:09:42,022 INFO L226 Difference]: Without dead ends: 50866 [2023-04-01 06:09:42,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:09:42,060 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 728 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:09:42,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 2737 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:09:42,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50866 states.