/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/seq-mthreaded/pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:27:05,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:27:05,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:27:05,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:27:05,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:27:05,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:27:05,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:27:05,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:27:05,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:27:05,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:27:05,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:27:05,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:27:05,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:27:05,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:27:05,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:27:05,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:27:05,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:27:05,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:27:05,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:27:05,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:27:05,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:27:05,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:27:05,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:27:05,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:27:05,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:27:05,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:27:05,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:27:05,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:27:05,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:27:05,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:27:05,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:27:05,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:27:05,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:27:05,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:27:05,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:27:05,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:27:05,073 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 [2023-04-02 05:27:05,101 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:27:05,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:27:05,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:27:05,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:27:05,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:27:05,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:27:05,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:27:05,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:27:05,103 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:27:05,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:27:05,104 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:27:05,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:27:05,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:27:05,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:27:05,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:27:05,106 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:27:05,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:27:05,106 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:27:05,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:27:05,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:27:05,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:27:05,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:27:05,327 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:27:05,327 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:27:05,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:27:06,392 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:27:06,610 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:27:06,611 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:27:06,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5493d4094/6ddd4cf046c249318b0d67abb531f26d/FLAGbe43105b3 [2023-04-02 05:27:06,644 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5493d4094/6ddd4cf046c249318b0d67abb531f26d [2023-04-02 05:27:06,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:27:06,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:27:06,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:27:06,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:27:06,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:27:06,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:27:06" (1/1) ... [2023-04-02 05:27:06,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e478e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:06, skipping insertion in model container [2023-04-02 05:27:06,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:27:06" (1/1) ... [2023-04-02 05:27:06,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:27:06,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:27:06,901 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c[31111,31124] [2023-04-02 05:27:06,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:27:06,917 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:27:06,999 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c[31111,31124] [2023-04-02 05:27:07,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:27:07,017 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:27:07,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07 WrapperNode [2023-04-02 05:27:07,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:27:07,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:27:07,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:27:07,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:27:07,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:27:07,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:27:07,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:27:07,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:27:07,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (1/1) ... [2023-04-02 05:27:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:27:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:27:07,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:27:07,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:27:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:27:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:27:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:27:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:27:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:27:07,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:27:07,324 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:27:07,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:27:08,110 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:27:08,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:27:08,129 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:27:08,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:27:08 BoogieIcfgContainer [2023-04-02 05:27:08,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:27:08,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:27:08,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:27:08,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:27:08,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:27:06" (1/3) ... [2023-04-02 05:27:08,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40176344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:27:08, skipping insertion in model container [2023-04-02 05:27:08,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:27:07" (2/3) ... [2023-04-02 05:27:08,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40176344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:27:08, skipping insertion in model container [2023-04-02 05:27:08,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:27:08" (3/3) ... [2023-04-02 05:27:08,136 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4_overflow.ufo.UNBOUNDED.pals.c [2023-04-02 05:27:08,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:27:08,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:27:08,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:27:08,211 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;@17357a75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:27:08,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:27:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 311 states have (on average 1.797427652733119) internal successors, (559), 313 states have internal predecessors, (559), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:27:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:27:08,230 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:08,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:08,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:08,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -363403663, now seen corresponding path program 1 times [2023-04-02 05:27:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340001135] [2023-04-02 05:27:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:27:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:27:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:27:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:27:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:27:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:27:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340001135] [2023-04-02 05:27:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340001135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:09,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:27:09,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186872066] [2023-04-02 05:27:09,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:09,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 05:27:09,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 05:27:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 05:27:09,140 INFO L87 Difference]: Start difference. First operand has 333 states, 311 states have (on average 1.797427652733119) internal successors, (559), 313 states have internal predecessors, (559), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:11,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:11,167 INFO L93 Difference]: Finished difference Result 476 states and 819 transitions. [2023-04-02 05:27:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:27:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 108 [2023-04-02 05:27:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:11,185 INFO L225 Difference]: With dead ends: 476 [2023-04-02 05:27:11,185 INFO L226 Difference]: Without dead ends: 348 [2023-04-02 05:27:11,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:11,190 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 844 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:11,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 48 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 05:27:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-04-02 05:27:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 328. [2023-04-02 05:27:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 308 states have (on average 1.7922077922077921) internal successors, (552), 309 states have internal predecessors, (552), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:27:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 571 transitions. [2023-04-02 05:27:11,280 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 571 transitions. Word has length 108 [2023-04-02 05:27:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:11,281 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 571 transitions. [2023-04-02 05:27:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 571 transitions. [2023-04-02 05:27:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:27:11,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:11,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:11,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:27:11,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:11,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 530082675, now seen corresponding path program 1 times [2023-04-02 05:27:11,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478999646] [2023-04-02 05:27:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:27:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:27:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:27:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:27:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:27:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:27:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478999646] [2023-04-02 05:27:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478999646] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:27:11,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692174138] [2023-04-02 05:27:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:11,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:27:11,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:11,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:27:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:27:11,944 INFO L87 Difference]: Start difference. First operand 328 states and 571 transitions. Second operand has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:15,678 INFO L93 Difference]: Finished difference Result 474 states and 811 transitions. [2023-04-02 05:27:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:27:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 108 [2023-04-02 05:27:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:15,680 INFO L225 Difference]: With dead ends: 474 [2023-04-02 05:27:15,680 INFO L226 Difference]: Without dead ends: 348 [2023-04-02 05:27:15,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:27:15,682 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 853 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:15,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 134 Invalid, 4183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 05:27:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-04-02 05:27:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 328. [2023-04-02 05:27:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 308 states have (on average 1.6428571428571428) internal successors, (506), 309 states have internal predecessors, (506), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:27:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2023-04-02 05:27:15,725 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 108 [2023-04-02 05:27:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:15,725 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2023-04-02 05:27:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:27:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2023-04-02 05:27:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 05:27:15,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:15,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:27:15,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:15,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 754326943, now seen corresponding path program 1 times [2023-04-02 05:27:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401084215] [2023-04-02 05:27:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:27:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:27:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:27:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:27:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:27:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401084215] [2023-04-02 05:27:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401084215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:27:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502740295] [2023-04-02 05:27:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:27:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:27:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:27:16,634 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:29,960 INFO L93 Difference]: Finished difference Result 1993 states and 3315 transitions. [2023-04-02 05:27:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-04-02 05:27:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2023-04-02 05:27:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:29,972 INFO L225 Difference]: With dead ends: 1993 [2023-04-02 05:27:29,973 INFO L226 Difference]: Without dead ends: 1873 [2023-04-02 05:27:29,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-04-02 05:27:29,982 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 7808 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6321 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7819 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 6321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:29,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7819 Valid, 199 Invalid, 6604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 6321 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-02 05:27:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2023-04-02 05:27:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 918. [2023-04-02 05:27:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 830 states have (on average 1.6722891566265061) internal successors, (1388), 839 states have internal predecessors, (1388), 40 states have call successors, (40), 40 states have call predecessors, (40), 47 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2023-04-02 05:27:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1495 transitions. [2023-04-02 05:27:30,135 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1495 transitions. Word has length 153 [2023-04-02 05:27:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:30,136 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1495 transitions. [2023-04-02 05:27:30,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1495 transitions. [2023-04-02 05:27:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:27:30,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:30,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:27:30,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:30,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 671836829, now seen corresponding path program 1 times [2023-04-02 05:27:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85606710] [2023-04-02 05:27:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:27:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:27:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:27:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:27:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:27:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:30,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:30,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85606710] [2023-04-02 05:27:30,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85606710] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:30,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:30,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:27:30,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33622284] [2023-04-02 05:27:30,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:27:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:27:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:30,853 INFO L87 Difference]: Start difference. First operand 918 states and 1495 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:36,877 INFO L93 Difference]: Finished difference Result 2969 states and 4904 transitions. [2023-04-02 05:27:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:27:36,878 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 154 [2023-04-02 05:27:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:36,885 INFO L225 Difference]: With dead ends: 2969 [2023-04-02 05:27:36,886 INFO L226 Difference]: Without dead ends: 2259 [2023-04-02 05:27:36,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:27:36,888 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3439 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:36,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3449 Valid, 117 Invalid, 3834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 05:27:36,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2023-04-02 05:27:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1945. [2023-04-02 05:27:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1732 states have (on average 1.670323325635104) internal successors, (2893), 1758 states have internal predecessors, (2893), 94 states have call successors, (94), 94 states have call predecessors, (94), 118 states have return successors, (180), 93 states have call predecessors, (180), 93 states have call successors, (180) [2023-04-02 05:27:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3167 transitions. [2023-04-02 05:27:37,077 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3167 transitions. Word has length 154 [2023-04-02 05:27:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:37,078 INFO L495 AbstractCegarLoop]: Abstraction has 1945 states and 3167 transitions. [2023-04-02 05:27:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3167 transitions. [2023-04-02 05:27:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:27:37,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:37,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:37,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:27:37,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:37,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:37,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1937041642, now seen corresponding path program 1 times [2023-04-02 05:27:37,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715504894] [2023-04-02 05:27:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:27:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:27:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:27:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:27:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:27:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:37,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:37,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715504894] [2023-04-02 05:27:37,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715504894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:37,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:37,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:27:37,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248416521] [2023-04-02 05:27:37,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:37,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:27:37,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:37,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:27:37,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:37,759 INFO L87 Difference]: Start difference. First operand 1945 states and 3167 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:44,132 INFO L93 Difference]: Finished difference Result 12055 states and 19963 transitions. [2023-04-02 05:27:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:27:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 155 [2023-04-02 05:27:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:44,167 INFO L225 Difference]: With dead ends: 12055 [2023-04-02 05:27:44,168 INFO L226 Difference]: Without dead ends: 10318 [2023-04-02 05:27:44,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:27:44,175 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3288 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:44,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3298 Valid, 125 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 05:27:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2023-04-02 05:27:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 8780. [2023-04-02 05:27:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8780 states, 7732 states have (on average 1.667744438696327) internal successors, (12895), 7873 states have internal predecessors, (12895), 454 states have call successors, (454), 454 states have call predecessors, (454), 593 states have return successors, (969), 453 states have call predecessors, (969), 453 states have call successors, (969) [2023-04-02 05:27:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 14318 transitions. [2023-04-02 05:27:45,053 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 14318 transitions. Word has length 155 [2023-04-02 05:27:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:45,053 INFO L495 AbstractCegarLoop]: Abstraction has 8780 states and 14318 transitions. [2023-04-02 05:27:45,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 14318 transitions. [2023-04-02 05:27:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:27:45,056 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:45,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:27:45,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:45,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1259580556, now seen corresponding path program 1 times [2023-04-02 05:27:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481180811] [2023-04-02 05:27:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:27:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:27:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:27:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:27:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:27:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:45,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:45,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481180811] [2023-04-02 05:27:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481180811] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:27:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259932063] [2023-04-02 05:27:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:45,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:27:45,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:27:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:45,678 INFO L87 Difference]: Start difference. First operand 8780 states and 14318 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:27:54,531 INFO L93 Difference]: Finished difference Result 59041 states and 97753 transitions. [2023-04-02 05:27:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:27:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 156 [2023-04-02 05:27:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:27:54,716 INFO L225 Difference]: With dead ends: 59041 [2023-04-02 05:27:54,716 INFO L226 Difference]: Without dead ends: 50469 [2023-04-02 05:27:54,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:27:54,747 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3828 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3838 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:27:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3838 Valid, 125 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 05:27:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50469 states. [2023-04-02 05:27:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50469 to 42811. [2023-04-02 05:27:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42811 states, 37528 states have (on average 1.6615060754636537) internal successors, (62353), 38304 states have internal predecessors, (62353), 2254 states have call successors, (2254), 2254 states have call predecessors, (2254), 3028 states have return successors, (5226), 2253 states have call predecessors, (5226), 2253 states have call successors, (5226) [2023-04-02 05:27:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42811 states to 42811 states and 69833 transitions. [2023-04-02 05:27:58,683 INFO L78 Accepts]: Start accepts. Automaton has 42811 states and 69833 transitions. Word has length 156 [2023-04-02 05:27:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:27:58,684 INFO L495 AbstractCegarLoop]: Abstraction has 42811 states and 69833 transitions. [2023-04-02 05:27:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:27:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42811 states and 69833 transitions. [2023-04-02 05:27:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:27:58,693 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:27:58,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:27:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:27:58,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:27:58,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:27:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1784808307, now seen corresponding path program 1 times [2023-04-02 05:27:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:27:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709276122] [2023-04-02 05:27:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:27:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:27:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:27:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:27:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:27:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:27:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:27:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:27:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:27:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:27:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:27:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:27:59,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:27:59,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709276122] [2023-04-02 05:27:59,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709276122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:27:59,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:27:59,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:27:59,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491031395] [2023-04-02 05:27:59,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:27:59,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:27:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:27:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:27:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:27:59,292 INFO L87 Difference]: Start difference. First operand 42811 states and 69833 transitions. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:28:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:28:19,213 INFO L93 Difference]: Finished difference Result 272204 states and 450234 transitions. [2023-04-02 05:28:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-02 05:28:19,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 157 [2023-04-02 05:28:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:28:20,278 INFO L225 Difference]: With dead ends: 272204 [2023-04-02 05:28:20,278 INFO L226 Difference]: Without dead ends: 229601 [2023-04-02 05:28:20,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 05:28:20,370 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2841 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:28:20,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2851 Valid, 94 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 05:28:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229601 states. [2023-04-02 05:28:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229601 to 194637. [2023-04-02 05:28:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194637 states, 170093 states have (on average 1.6545536853368452) internal successors, (281428), 174074 states have internal predecessors, (281428), 10282 states have call successors, (10282), 10282 states have call predecessors, (10282), 14261 states have return successors, (25617), 10281 states have call predecessors, (25617), 10281 states have call successors, (25617) [2023-04-02 05:28:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194637 states to 194637 states and 317327 transitions. [2023-04-02 05:28:37,490 INFO L78 Accepts]: Start accepts. Automaton has 194637 states and 317327 transitions. Word has length 157 [2023-04-02 05:28:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:28:37,491 INFO L495 AbstractCegarLoop]: Abstraction has 194637 states and 317327 transitions. [2023-04-02 05:28:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 6 states have internal predecessors, (139), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 05:28:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 194637 states and 317327 transitions. [2023-04-02 05:28:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 05:28:37,500 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:28:37,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:28:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:28:37,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:28:37,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:28:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1211743197, now seen corresponding path program 1 times [2023-04-02 05:28:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:28:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262272662] [2023-04-02 05:28:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:28:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:28:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:28:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:28:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:28:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:28:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:28:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:28:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:28:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:28:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:28:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:28:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:28:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262272662] [2023-04-02 05:28:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262272662] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:28:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:28:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:28:38,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310345230] [2023-04-02 05:28:38,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:28:38,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:28:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:28:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:28:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:28:38,335 INFO L87 Difference]: Start difference. First operand 194637 states and 317327 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:29:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:29:10,009 INFO L93 Difference]: Finished difference Result 328566 states and 543123 transitions. [2023-04-02 05:29:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-04-02 05:29:10,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2023-04-02 05:29:10,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:29:11,009 INFO L225 Difference]: With dead ends: 328566 [2023-04-02 05:29:11,010 INFO L226 Difference]: Without dead ends: 243467 [2023-04-02 05:29:11,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5030 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2051, Invalid=11521, Unknown=0, NotChecked=0, Total=13572 [2023-04-02 05:29:11,134 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 7547 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 8165 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7563 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 8437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 8165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:29:11,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7563 Valid, 272 Invalid, 8437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [272 Valid, 8165 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-02 05:29:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243467 states. [2023-04-02 05:29:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243467 to 201465. [2023-04-02 05:29:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201465 states, 176194 states have (on average 1.6555841856135851) internal successors, (291704), 180174 states have internal predecessors, (291704), 10646 states have call successors, (10646), 10646 states have call predecessors, (10646), 14624 states have return successors, (26479), 10645 states have call predecessors, (26479), 10645 states have call successors, (26479) [2023-04-02 05:29:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201465 states to 201465 states and 328829 transitions. [2023-04-02 05:29:28,890 INFO L78 Accepts]: Start accepts. Automaton has 201465 states and 328829 transitions. Word has length 158 [2023-04-02 05:29:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:29:28,891 INFO L495 AbstractCegarLoop]: Abstraction has 201465 states and 328829 transitions. [2023-04-02 05:29:28,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:29:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 201465 states and 328829 transitions. [2023-04-02 05:29:28,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 05:29:28,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:29:28,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:29:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:29:28,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:29:28,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:29:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1726620508, now seen corresponding path program 1 times [2023-04-02 05:29:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:29:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220245926] [2023-04-02 05:29:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:29:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:29:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:29:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:29:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:29:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:29:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:29:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:29:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:29:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:29:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:29:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:29:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:29:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220245926] [2023-04-02 05:29:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220245926] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:29:29,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:29:29,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:29:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234986518] [2023-04-02 05:29:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:29:29,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:29:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:29:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:29:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:29:29,688 INFO L87 Difference]: Start difference. First operand 201465 states and 328829 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:30:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:30:01,285 INFO L93 Difference]: Finished difference Result 342964 states and 566982 transitions. [2023-04-02 05:30:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-04-02 05:30:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2023-04-02 05:30:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:30:02,174 INFO L225 Difference]: With dead ends: 342964 [2023-04-02 05:30:02,174 INFO L226 Difference]: Without dead ends: 251545 [2023-04-02 05:30:02,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4845 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1995, Invalid=11115, Unknown=0, NotChecked=0, Total=13110 [2023-04-02 05:30:02,307 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 8709 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 7043 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8724 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 7344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 7043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:30:02,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8724 Valid, 207 Invalid, 7344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 7043 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-02 05:30:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251545 states. [2023-04-02 05:30:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251545 to 203851. [2023-04-02 05:30:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203851 states, 178327 states have (on average 1.655767214162746) internal successors, (295268), 182384 states have internal predecessors, (295268), 10734 states have call successors, (10734), 10734 states have call predecessors, (10734), 14789 states have return successors, (26713), 10733 states have call predecessors, (26713), 10733 states have call successors, (26713) [2023-04-02 05:30:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203851 states to 203851 states and 332715 transitions. [2023-04-02 05:30:20,032 INFO L78 Accepts]: Start accepts. Automaton has 203851 states and 332715 transitions. Word has length 158 [2023-04-02 05:30:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:30:20,032 INFO L495 AbstractCegarLoop]: Abstraction has 203851 states and 332715 transitions. [2023-04-02 05:30:20,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:30:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 203851 states and 332715 transitions. [2023-04-02 05:30:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 05:30:20,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:30:20,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:30:20,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:30:20,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:30:20,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:30:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1563067696, now seen corresponding path program 1 times [2023-04-02 05:30:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:30:20,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044785582] [2023-04-02 05:30:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:30:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:30:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:30:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:30:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:30:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:30:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:30:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:30:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-04-02 05:30:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:30:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:30:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:30:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:30:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044785582] [2023-04-02 05:30:20,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044785582] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:30:20,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:30:20,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:30:20,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069975259] [2023-04-02 05:30:20,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:30:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:30:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:30:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:30:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:30:20,704 INFO L87 Difference]: Start difference. First operand 203851 states and 332715 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 05:30:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:30:52,594 INFO L93 Difference]: Finished difference Result 344182 states and 568192 transitions. [2023-04-02 05:30:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-04-02 05:30:52,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 11 states have internal predecessors, (140), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2023-04-02 05:30:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:30:53,515 INFO L225 Difference]: With dead ends: 344182 [2023-04-02 05:30:53,515 INFO L226 Difference]: Without dead ends: 248751 [2023-04-02 05:30:53,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1809, Invalid=9747, Unknown=0, NotChecked=0, Total=11556 [2023-04-02 05:30:53,672 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 6701 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 8369 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6716 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 8606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 8369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:30:53,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6716 Valid, 276 Invalid, 8606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 8369 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 05:30:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248751 states.