/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:23:18,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:23:18,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:23:18,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:23:18,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:23:18,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:23:18,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:23:18,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:23:18,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:23:18,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:23:18,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:23:18,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:23:18,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:23:18,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:23:18,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:23:18,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:23:18,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:23:18,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:23:18,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:23:18,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:23:18,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:23:18,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:23:18,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:23:18,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:23:18,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:23:18,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:23:18,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:23:18,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:23:18,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:23:18,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:23:18,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:23:18,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:23:18,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:23:18,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:23:18,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:23:18,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:23:18,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:23:18,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:23:18,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:23:18,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:23:18,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:23:18,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:23:19,024 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:23:19,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:23:19,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:23:19,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:23:19,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:23:19,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:23:19,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:23:19,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:23:19,034 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:23:19,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:23:19,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:23:19,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:23:19,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:19,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:23:19,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:23:19,038 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:23:19,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:23:19,038 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:23:19,038 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:23:19,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:23:19,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:23:19,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:23:19,295 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:23:19,295 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:23:19,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/mem_slave_tlm.2.cil.c [2023-03-31 01:23:20,424 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:23:20,678 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:23:20,681 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.2.cil.c [2023-03-31 01:23:20,695 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0fc65705/4a5ba84f48154a8e8fd6852c9e720491/FLAG4ffc05888 [2023-03-31 01:23:20,707 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0fc65705/4a5ba84f48154a8e8fd6852c9e720491 [2023-03-31 01:23:20,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:23:20,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:23:20,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:20,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:23:20,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:23:20,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:20" (1/1) ... [2023-03-31 01:23:20,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e6b8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:20, skipping insertion in model container [2023-03-31 01:23:20,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:23:20" (1/1) ... [2023-03-31 01:23:20,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:23:20,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:23:20,880 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.2.cil.c[646,659] [2023-03-31 01:23:20,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:21,001 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:23:21,009 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.2.cil.c[646,659] [2023-03-31 01:23:21,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:23:21,087 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:23:21,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21 WrapperNode [2023-03-31 01:23:21,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:23:21,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:23:21,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:23:21,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:23:21,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:23:21,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:23:21,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:23:21,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:23:21,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (1/1) ... [2023-03-31 01:23:21,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:23:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:23:21,218 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) [2023-03-31 01:23:21,261 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 [2023-03-31 01:23:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:23:21,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2023-03-31 01:23:21,287 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2023-03-31 01:23:21,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:23:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:23:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:23:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:23:21,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:23:21,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:23:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:23:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:23:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:23:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:23:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:23:21,381 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:23:21,383 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:23:22,265 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:23:22,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:23:22,274 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-03-31 01:23:22,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:22 BoogieIcfgContainer [2023-03-31 01:23:22,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:23:22,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:23:22,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:23:22,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:23:22,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:23:20" (1/3) ... [2023-03-31 01:23:22,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b40fbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:22, skipping insertion in model container [2023-03-31 01:23:22,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:23:21" (2/3) ... [2023-03-31 01:23:22,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b40fbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:23:22, skipping insertion in model container [2023-03-31 01:23:22,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:23:22" (3/3) ... [2023-03-31 01:23:22,289 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.c [2023-03-31 01:23:22,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:23:22,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:23:22,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:23:22,383 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=PETRI_NET, 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;@5a2aedc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:23:22,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:23:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 276 states have (on average 1.818840579710145) internal successors, (502), 284 states have internal predecessors, (502), 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) [2023-03-31 01:23:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-03-31 01:23:22,412 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:22,413 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] [2023-03-31 01:23:22,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:22,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2081415904, now seen corresponding path program 1 times [2023-03-31 01:23:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874393087] [2023-03-31 01:23:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:23,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:23,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874393087] [2023-03-31 01:23:23,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874393087] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:23,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:23,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:23,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527853065] [2023-03-31 01:23:23,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:23,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:23,114 INFO L87 Difference]: Start difference. First operand has 300 states, 276 states have (on average 1.818840579710145) internal successors, (502), 284 states have internal predecessors, (502), 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 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:24,908 INFO L93 Difference]: Finished difference Result 873 states and 1555 transitions. [2023-03-31 01:23:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:24,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 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 39 [2023-03-31 01:23:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:24,924 INFO L225 Difference]: With dead ends: 873 [2023-03-31 01:23:24,924 INFO L226 Difference]: Without dead ends: 570 [2023-03-31 01:23:24,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:24,933 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 476 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:24,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 626 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:23:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-03-31 01:23:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 496. [2023-03-31 01:23:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 463 states have (on average 1.5723542116630669) internal successors, (728), 474 states have internal predecessors, (728), 18 states have call successors, (18), 14 states have call predecessors, (18), 14 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2023-03-31 01:23:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 764 transitions. [2023-03-31 01:23:25,056 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 764 transitions. Word has length 39 [2023-03-31 01:23:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:25,056 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 764 transitions. [2023-03-31 01:23:25,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:25,057 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 764 transitions. [2023-03-31 01:23:25,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 01:23:25,060 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:25,060 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] [2023-03-31 01:23:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:23:25,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:25,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash -204882712, now seen corresponding path program 1 times [2023-03-31 01:23:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906422815] [2023-03-31 01:23:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:25,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906422815] [2023-03-31 01:23:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906422815] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:25,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:25,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564668024] [2023-03-31 01:23:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:25,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:25,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:25,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:25,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:25,295 INFO L87 Difference]: Start difference. First operand 496 states and 764 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:26,739 INFO L93 Difference]: Finished difference Result 1367 states and 2127 transitions. [2023-03-31 01:23:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:26,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 4 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 50 [2023-03-31 01:23:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:26,750 INFO L225 Difference]: With dead ends: 1367 [2023-03-31 01:23:26,757 INFO L226 Difference]: Without dead ends: 891 [2023-03-31 01:23:26,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:26,763 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 480 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:26,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 879 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:23:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-03-31 01:23:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 789. [2023-03-31 01:23:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 741 states have (on average 1.6005398110661269) internal successors, (1186), 755 states have internal predecessors, (1186), 26 states have call successors, (26), 22 states have call predecessors, (26), 21 states have return successors, (30), 18 states have call predecessors, (30), 19 states have call successors, (30) [2023-03-31 01:23:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1242 transitions. [2023-03-31 01:23:26,853 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1242 transitions. Word has length 50 [2023-03-31 01:23:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:26,854 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1242 transitions. [2023-03-31 01:23:26,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1242 transitions. [2023-03-31 01:23:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 01:23:26,856 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:26,857 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] [2023-03-31 01:23:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:23:26,857 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:26,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2114572313, now seen corresponding path program 1 times [2023-03-31 01:23:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515622911] [2023-03-31 01:23:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:27,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:27,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515622911] [2023-03-31 01:23:27,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515622911] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:27,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:27,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:27,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37204971] [2023-03-31 01:23:27,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:27,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:27,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:27,181 INFO L87 Difference]: Start difference. First operand 789 states and 1242 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:28,556 INFO L93 Difference]: Finished difference Result 2122 states and 3368 transitions. [2023-03-31 01:23:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 4 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 51 [2023-03-31 01:23:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:28,564 INFO L225 Difference]: With dead ends: 2122 [2023-03-31 01:23:28,565 INFO L226 Difference]: Without dead ends: 1364 [2023-03-31 01:23:28,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:28,569 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 565 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:28,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 696 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:23:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-03-31 01:23:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1231. [2023-03-31 01:23:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1160 states have (on average 1.5931034482758621) internal successors, (1848), 1185 states have internal predecessors, (1848), 36 states have call successors, (36), 32 states have call predecessors, (36), 34 states have return successors, (78), 27 states have call predecessors, (78), 29 states have call successors, (78) [2023-03-31 01:23:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1962 transitions. [2023-03-31 01:23:28,744 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1962 transitions. Word has length 51 [2023-03-31 01:23:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:28,745 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1962 transitions. [2023-03-31 01:23:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1962 transitions. [2023-03-31 01:23:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:23:28,749 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:28,750 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, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:23:28,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:28,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1008114193, now seen corresponding path program 1 times [2023-03-31 01:23:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:28,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508501994] [2023-03-31 01:23:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:28,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:29,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508501994] [2023-03-31 01:23:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508501994] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:29,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:29,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:23:29,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761857281] [2023-03-31 01:23:29,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:29,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:23:29,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:29,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:23:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:23:29,197 INFO L87 Difference]: Start difference. First operand 1231 states and 1962 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:33,800 INFO L93 Difference]: Finished difference Result 6593 states and 11427 transitions. [2023-03-31 01:23:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-03-31 01:23:33,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 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 61 [2023-03-31 01:23:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:33,834 INFO L225 Difference]: With dead ends: 6593 [2023-03-31 01:23:33,834 INFO L226 Difference]: Without dead ends: 5393 [2023-03-31 01:23:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:23:33,882 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 2645 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:33,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 2819 Invalid, 3542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-31 01:23:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2023-03-31 01:23:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 4519. [2023-03-31 01:23:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 4160 states have (on average 1.5564903846153846) internal successors, (6475), 4339 states have internal predecessors, (6475), 198 states have call successors, (198), 128 states have call predecessors, (198), 160 states have return successors, (1071), 179 states have call predecessors, (1071), 191 states have call successors, (1071) [2023-03-31 01:23:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 7744 transitions. [2023-03-31 01:23:34,648 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 7744 transitions. Word has length 61 [2023-03-31 01:23:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:34,650 INFO L495 AbstractCegarLoop]: Abstraction has 4519 states and 7744 transitions. [2023-03-31 01:23:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 7744 transitions. [2023-03-31 01:23:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 01:23:34,652 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:34,653 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] [2023-03-31 01:23:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:23:34,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:34,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1027685206, now seen corresponding path program 1 times [2023-03-31 01:23:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441457189] [2023-03-31 01:23:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441457189] [2023-03-31 01:23:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441457189] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:34,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:23:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492976769] [2023-03-31 01:23:34,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:34,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:23:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:34,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:23:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:23:34,959 INFO L87 Difference]: Start difference. First operand 4519 states and 7744 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:37,011 INFO L93 Difference]: Finished difference Result 11389 states and 20922 transitions. [2023-03-31 01:23:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:23:37,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 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 63 [2023-03-31 01:23:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:37,068 INFO L225 Difference]: With dead ends: 11389 [2023-03-31 01:23:37,069 INFO L226 Difference]: Without dead ends: 6901 [2023-03-31 01:23:37,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:37,145 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 582 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:37,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 585 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:23:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2023-03-31 01:23:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 6229. [2023-03-31 01:23:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6229 states, 5686 states have (on average 1.5381639113612382) internal successors, (8746), 5926 states have internal predecessors, (8746), 311 states have call successors, (311), 208 states have call predecessors, (311), 231 states have return successors, (1972), 242 states have call predecessors, (1972), 304 states have call successors, (1972) [2023-03-31 01:23:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 11029 transitions. [2023-03-31 01:23:38,441 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 11029 transitions. Word has length 63 [2023-03-31 01:23:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:38,442 INFO L495 AbstractCegarLoop]: Abstraction has 6229 states and 11029 transitions. [2023-03-31 01:23:38,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:23:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 11029 transitions. [2023-03-31 01:23:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:23:38,444 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:38,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:23:38,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:38,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1027237631, now seen corresponding path program 1 times [2023-03-31 01:23:38,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:38,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938258640] [2023-03-31 01:23:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:38,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:38,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938258640] [2023-03-31 01:23:38,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938258640] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:38,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:38,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805248900] [2023-03-31 01:23:38,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:38,692 INFO L87 Difference]: Start difference. First operand 6229 states and 11029 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:40,404 INFO L93 Difference]: Finished difference Result 12789 states and 22463 transitions. [2023-03-31 01:23:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:23:40,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 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 74 [2023-03-31 01:23:40,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:40,454 INFO L225 Difference]: With dead ends: 12789 [2023-03-31 01:23:40,454 INFO L226 Difference]: Without dead ends: 6580 [2023-03-31 01:23:40,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:40,546 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 682 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:40,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 466 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:23:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2023-03-31 01:23:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 6218. [2023-03-31 01:23:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 5675 states have (on average 1.538149779735683) internal successors, (8729), 5915 states have internal predecessors, (8729), 311 states have call successors, (311), 208 states have call predecessors, (311), 231 states have return successors, (1972), 242 states have call predecessors, (1972), 304 states have call successors, (1972) [2023-03-31 01:23:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 11012 transitions. [2023-03-31 01:23:41,794 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 11012 transitions. Word has length 74 [2023-03-31 01:23:41,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:41,795 INFO L495 AbstractCegarLoop]: Abstraction has 6218 states and 11012 transitions. [2023-03-31 01:23:41,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:41,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 11012 transitions. [2023-03-31 01:23:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-03-31 01:23:41,797 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:41,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:41,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:23:41,798 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:41,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1759205057, now seen corresponding path program 1 times [2023-03-31 01:23:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822173837] [2023-03-31 01:23:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:41,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822173837] [2023-03-31 01:23:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822173837] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:42,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:42,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601321155] [2023-03-31 01:23:42,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:42,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:42,055 INFO L87 Difference]: Start difference. First operand 6218 states and 11012 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:23:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:44,134 INFO L93 Difference]: Finished difference Result 15331 states and 30019 transitions. [2023-03-31 01:23:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:23:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 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 74 [2023-03-31 01:23:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:44,195 INFO L225 Difference]: With dead ends: 15331 [2023-03-31 01:23:44,195 INFO L226 Difference]: Without dead ends: 9133 [2023-03-31 01:23:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:44,265 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 488 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:44,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 888 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:23:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2023-03-31 01:23:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 8494. [2023-03-31 01:23:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 7737 states have (on average 1.4952824092025332) internal successors, (11569), 8067 states have internal predecessors, (11569), 432 states have call successors, (432), 291 states have call predecessors, (432), 324 states have return successors, (3422), 335 states have call predecessors, (3422), 425 states have call successors, (3422) [2023-03-31 01:23:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 15423 transitions. [2023-03-31 01:23:45,669 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 15423 transitions. Word has length 74 [2023-03-31 01:23:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:45,669 INFO L495 AbstractCegarLoop]: Abstraction has 8494 states and 15423 transitions. [2023-03-31 01:23:45,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:23:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 15423 transitions. [2023-03-31 01:23:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-03-31 01:23:45,672 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:45,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:45,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:23:45,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:45,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1786886061, now seen corresponding path program 1 times [2023-03-31 01:23:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888512380] [2023-03-31 01:23:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:46,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888512380] [2023-03-31 01:23:46,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888512380] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:46,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:46,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369161163] [2023-03-31 01:23:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:46,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:46,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:46,022 INFO L87 Difference]: Start difference. First operand 8494 states and 15423 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:48,471 INFO L93 Difference]: Finished difference Result 17271 states and 33541 transitions. [2023-03-31 01:23:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:23:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (8), 5 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 76 [2023-03-31 01:23:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:48,531 INFO L225 Difference]: With dead ends: 17271 [2023-03-31 01:23:48,531 INFO L226 Difference]: Without dead ends: 8797 [2023-03-31 01:23:48,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:23:48,633 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 499 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:48,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 450 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:23:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8797 states. [2023-03-31 01:23:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8797 to 8313. [2023-03-31 01:23:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 7556 states have (on average 1.4756484912652197) internal successors, (11150), 7886 states have internal predecessors, (11150), 432 states have call successors, (432), 291 states have call predecessors, (432), 324 states have return successors, (3415), 335 states have call predecessors, (3415), 425 states have call successors, (3415) [2023-03-31 01:23:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 14997 transitions. [2023-03-31 01:23:49,954 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 14997 transitions. Word has length 76 [2023-03-31 01:23:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 8313 states and 14997 transitions. [2023-03-31 01:23:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:23:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 14997 transitions. [2023-03-31 01:23:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 01:23:49,959 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:49,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:49,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:23:49,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:49,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -282826383, now seen corresponding path program 1 times [2023-03-31 01:23:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681926935] [2023-03-31 01:23:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681926935] [2023-03-31 01:23:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681926935] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:23:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625725296] [2023-03-31 01:23:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:23:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:23:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:23:50,215 INFO L87 Difference]: Start difference. First operand 8313 states and 14997 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 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) [2023-03-31 01:23:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:52,361 INFO L93 Difference]: Finished difference Result 15399 states and 28680 transitions. [2023-03-31 01:23:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:23:52,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 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 77 [2023-03-31 01:23:52,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:52,405 INFO L225 Difference]: With dead ends: 15399 [2023-03-31 01:23:52,406 INFO L226 Difference]: Without dead ends: 7106 [2023-03-31 01:23:52,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:23:52,498 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 248 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:52,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 882 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:23:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2023-03-31 01:23:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 6413. [2023-03-31 01:23:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 5890 states have (on average 1.4852292020373514) internal successors, (8748), 6108 states have internal predecessors, (8748), 300 states have call successors, (300), 210 states have call predecessors, (300), 222 states have return successors, (1869), 220 states have call predecessors, (1869), 293 states have call successors, (1869) [2023-03-31 01:23:53,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 10917 transitions. [2023-03-31 01:23:53,479 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 10917 transitions. Word has length 77 [2023-03-31 01:23:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:23:53,481 INFO L495 AbstractCegarLoop]: Abstraction has 6413 states and 10917 transitions. [2023-03-31 01:23:53,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 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) [2023-03-31 01:23:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 10917 transitions. [2023-03-31 01:23:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-03-31 01:23:53,482 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:23:53,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:23:53,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:23:53,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:23:53,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:23:53,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1969587196, now seen corresponding path program 1 times [2023-03-31 01:23:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:23:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869542587] [2023-03-31 01:23:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:23:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:23:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:23:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:23:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:23:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:23:53,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:23:53,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869542587] [2023-03-31 01:23:53,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869542587] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:23:53,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:23:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:23:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774611586] [2023-03-31 01:23:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:23:53,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:23:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:23:53,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:23:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:23:53,802 INFO L87 Difference]: Start difference. First operand 6413 states and 10917 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:23:57,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:23:57,938 INFO L93 Difference]: Finished difference Result 19262 states and 36261 transitions. [2023-03-31 01:23:57,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:23:57,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (8), 6 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 79 [2023-03-31 01:23:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:23:58,025 INFO L225 Difference]: With dead ends: 19262 [2023-03-31 01:23:58,025 INFO L226 Difference]: Without dead ends: 12934 [2023-03-31 01:23:58,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:23:58,093 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1647 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:23:58,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2191 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:23:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12934 states. [2023-03-31 01:24:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12934 to 12071. [2023-03-31 01:24:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12071 states, 11091 states have (on average 1.4811108105671265) internal successors, (16427), 11544 states have internal predecessors, (16427), 545 states have call successors, (545), 375 states have call predecessors, (545), 434 states have return successors, (5661), 395 states have call predecessors, (5661), 538 states have call successors, (5661) [2023-03-31 01:24:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12071 states to 12071 states and 22633 transitions. [2023-03-31 01:24:00,440 INFO L78 Accepts]: Start accepts. Automaton has 12071 states and 22633 transitions. Word has length 79 [2023-03-31 01:24:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:00,440 INFO L495 AbstractCegarLoop]: Abstraction has 12071 states and 22633 transitions. [2023-03-31 01:24:00,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12071 states and 22633 transitions. [2023-03-31 01:24:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-03-31 01:24:00,442 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:00,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:24:00,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:00,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 845728556, now seen corresponding path program 1 times [2023-03-31 01:24:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995427950] [2023-03-31 01:24:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-03-31 01:24:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:00,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995427950] [2023-03-31 01:24:00,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995427950] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:00,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:00,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-03-31 01:24:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198846657] [2023-03-31 01:24:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:00,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:24:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:24:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:24:00,788 INFO L87 Difference]: Start difference. First operand 12071 states and 22633 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:24:05,187 INFO L93 Difference]: Finished difference Result 25819 states and 51535 transitions. [2023-03-31 01:24:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-31 01:24:05,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (8), 6 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 80 [2023-03-31 01:24:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:24:05,390 INFO L225 Difference]: With dead ends: 25819 [2023-03-31 01:24:05,390 INFO L226 Difference]: Without dead ends: 13833 [2023-03-31 01:24:05,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:24:05,508 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1074 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:24:05,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3201 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:24:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13833 states. [2023-03-31 01:24:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13833 to 12931. [2023-03-31 01:24:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12931 states, 11865 states have (on average 1.4686051411715129) internal successors, (17425), 12361 states have internal predecessors, (17425), 595 states have call successors, (595), 407 states have call predecessors, (595), 470 states have return successors, (6283), 430 states have call predecessors, (6283), 588 states have call successors, (6283) [2023-03-31 01:24:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12931 states to 12931 states and 24303 transitions. [2023-03-31 01:24:07,635 INFO L78 Accepts]: Start accepts. Automaton has 12931 states and 24303 transitions. Word has length 80 [2023-03-31 01:24:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:24:07,635 INFO L495 AbstractCegarLoop]: Abstraction has 12931 states and 24303 transitions. [2023-03-31 01:24:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:24:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12931 states and 24303 transitions. [2023-03-31 01:24:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-03-31 01:24:07,638 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:24:07,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:24:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:24:07,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:24:07,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:24:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2102914671, now seen corresponding path program 1 times [2023-03-31 01:24:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:24:07,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950120108] [2023-03-31 01:24:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:24:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:24:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:24:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 01:24:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:24:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:24:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:24:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950120108] [2023-03-31 01:24:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950120108] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:24:07,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:24:07,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:24:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033071098] [2023-03-31 01:24:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:24:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:24:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:24:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:24:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:24:07,920 INFO L87 Difference]: Start difference. First operand 12931 states and 24303 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 3 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)