/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-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:46:25,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:46:25,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:46:25,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:46:25,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:46:25,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:46:25,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:46:25,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:46:25,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:46:25,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:46:25,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:46:25,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:46:25,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:46:25,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:46:25,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:46:25,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:46:25,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:46:25,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:46:25,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:46:25,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:46:25,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:46:25,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:46:25,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:46:25,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:46:25,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:46:25,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:46:25,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:46:25,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:46:25,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:46:25,343 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:46:25,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:46:25,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:46:25,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:46:25,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:46:25,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:46:25,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:46:25,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:46:25,352 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:46:25,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:46:25,352 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:46:25,353 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:46:25,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:46:25,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:46:25,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:46:25,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:46:25,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:25,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:46:25,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:46:25,356 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:46:25,356 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:46:25,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:46:25,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:46:25,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:46:25,587 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:46:25,588 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:46:25,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:46:26,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:46:27,109 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:46:27,110 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:46:27,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f217a688c/150ac187c88247199c3af7b26d913513/FLAG6a306bbc6 [2023-03-31 01:46:27,139 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f217a688c/150ac187c88247199c3af7b26d913513 [2023-03-31 01:46:27,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:46:27,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:46:27,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:27,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:46:27,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:46:27,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f973e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27, skipping insertion in model container [2023-03-31 01:46:27,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:46:27,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:46:27,517 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2023-03-31 01:46:27,570 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2023-03-31 01:46:27,592 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2023-03-31 01:46:27,597 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2023-03-31 01:46:27,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:27,762 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:46:27,796 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2023-03-31 01:46:27,831 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2023-03-31 01:46:27,835 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2023-03-31 01:46:27,838 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2023-03-31 01:46:27,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:46:27,916 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:46:27,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27 WrapperNode [2023-03-31 01:46:27,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:46:27,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:46:27,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:46:27,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:46:27,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:27,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:28,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:28,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:28,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:28,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:46:28,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:46:28,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:46:28,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:46:28,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (1/1) ... [2023-03-31 01:46:28,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:46:28,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:46:28,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:46:28,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:46:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:46:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:46:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:46:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:46:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:46:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:46:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:46:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:46:28,366 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:46:28,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:46:29,566 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:46:29,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:46:29,575 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:46:29,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:29 BoogieIcfgContainer [2023-03-31 01:46:29,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:46:29,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:46:29,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:46:29,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:46:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:46:27" (1/3) ... [2023-03-31 01:46:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5c5380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:29, skipping insertion in model container [2023-03-31 01:46:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:46:27" (2/3) ... [2023-03-31 01:46:29,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5c5380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:46:29, skipping insertion in model container [2023-03-31 01:46:29,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:46:29" (3/3) ... [2023-03-31 01:46:29,584 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:46:29,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:46:29,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-03-31 01:46:29,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:46:29,648 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;@37250a29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:46:29,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-03-31 01:46:29,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 461 states, 452 states have (on average 1.8473451327433628) internal successors, (835), 456 states have internal predecessors, (835), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:46:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:29,669 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:29,669 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] [2023-03-31 01:46:29,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:29,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash -811280710, now seen corresponding path program 1 times [2023-03-31 01:46:29,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:29,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741260760] [2023-03-31 01:46:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:29,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:30,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:30,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741260760] [2023-03-31 01:46:30,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741260760] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:30,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:30,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:30,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56675835] [2023-03-31 01:46:30,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:30,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:30,618 INFO L87 Difference]: Start difference. First operand has 461 states, 452 states have (on average 1.8473451327433628) internal successors, (835), 456 states have internal predecessors, (835), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:33,225 INFO L93 Difference]: Finished difference Result 731 states and 1276 transitions. [2023-03-31 01:46:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:46:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:33,239 INFO L225 Difference]: With dead ends: 731 [2023-03-31 01:46:33,239 INFO L226 Difference]: Without dead ends: 574 [2023-03-31 01:46:33,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:46:33,245 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 442 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:33,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1422 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 01:46:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-03-31 01:46:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2023-03-31 01:46:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 561 states have (on average 1.3511586452762923) internal successors, (758), 564 states have internal predecessors, (758), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 761 transitions. [2023-03-31 01:46:33,314 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 761 transitions. Word has length 54 [2023-03-31 01:46:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:33,315 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 761 transitions. [2023-03-31 01:46:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 761 transitions. [2023-03-31 01:46:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:33,318 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:33,318 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] [2023-03-31 01:46:33,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:46:33,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:33,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash -431152371, now seen corresponding path program 1 times [2023-03-31 01:46:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339896425] [2023-03-31 01:46:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339896425] [2023-03-31 01:46:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339896425] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:33,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569971657] [2023-03-31 01:46:33,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:33,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:33,855 INFO L87 Difference]: Start difference. First operand 568 states and 761 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:35,650 INFO L93 Difference]: Finished difference Result 1067 states and 1478 transitions. [2023-03-31 01:46:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:35,654 INFO L225 Difference]: With dead ends: 1067 [2023-03-31 01:46:35,655 INFO L226 Difference]: Without dead ends: 712 [2023-03-31 01:46:35,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:35,659 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1823 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:35,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 425 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:46:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-03-31 01:46:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 705. [2023-03-31 01:46:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 698 states have (on average 1.3724928366762177) internal successors, (958), 701 states have internal predecessors, (958), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 961 transitions. [2023-03-31 01:46:35,748 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 961 transitions. Word has length 54 [2023-03-31 01:46:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 961 transitions. [2023-03-31 01:46:35,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 961 transitions. [2023-03-31 01:46:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:35,752 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:35,752 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] [2023-03-31 01:46:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:46:35,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:35,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash -325111440, now seen corresponding path program 1 times [2023-03-31 01:46:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:35,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441736850] [2023-03-31 01:46:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:36,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441736850] [2023-03-31 01:46:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441736850] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:36,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:36,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896439878] [2023-03-31 01:46:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:36,186 INFO L87 Difference]: Start difference. First operand 705 states and 961 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:37,816 INFO L93 Difference]: Finished difference Result 1235 states and 1750 transitions. [2023-03-31 01:46:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:46:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:37,821 INFO L225 Difference]: With dead ends: 1235 [2023-03-31 01:46:37,821 INFO L226 Difference]: Without dead ends: 909 [2023-03-31 01:46:37,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:46:37,827 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 307 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:37,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 914 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:46:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-03-31 01:46:37,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 900. [2023-03-31 01:46:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 893 states have (on average 1.3863381858902575) internal successors, (1238), 896 states have internal predecessors, (1238), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1241 transitions. [2023-03-31 01:46:37,912 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1241 transitions. Word has length 54 [2023-03-31 01:46:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:37,914 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1241 transitions. [2023-03-31 01:46:37,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1241 transitions. [2023-03-31 01:46:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:46:37,917 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:37,917 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] [2023-03-31 01:46:37,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:46:37,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:37,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash 193285153, now seen corresponding path program 1 times [2023-03-31 01:46:37,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:37,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531795113] [2023-03-31 01:46:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:37,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:38,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531795113] [2023-03-31 01:46:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531795113] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5869279] [2023-03-31 01:46:38,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:38,395 INFO L87 Difference]: Start difference. First operand 900 states and 1241 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:40,002 INFO L93 Difference]: Finished difference Result 1858 states and 2629 transitions. [2023-03-31 01:46:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:40,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-03-31 01:46:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:40,007 INFO L225 Difference]: With dead ends: 1858 [2023-03-31 01:46:40,008 INFO L226 Difference]: Without dead ends: 1114 [2023-03-31 01:46:40,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:40,010 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1660 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:40,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 401 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:46:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2023-03-31 01:46:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1105. [2023-03-31 01:46:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1098 states have (on average 1.4116575591985427) internal successors, (1550), 1101 states have internal predecessors, (1550), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1553 transitions. [2023-03-31 01:46:40,100 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1553 transitions. Word has length 54 [2023-03-31 01:46:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:40,101 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1553 transitions. [2023-03-31 01:46:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1553 transitions. [2023-03-31 01:46:40,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 01:46:40,103 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:40,104 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] [2023-03-31 01:46:40,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:46:40,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:40,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1984444830, now seen corresponding path program 1 times [2023-03-31 01:46:40,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:40,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901578991] [2023-03-31 01:46:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:40,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:40,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901578991] [2023-03-31 01:46:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901578991] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:46:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080652892] [2023-03-31 01:46:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:40,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:46:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:46:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:46:40,606 INFO L87 Difference]: Start difference. First operand 1105 states and 1553 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:42,001 INFO L93 Difference]: Finished difference Result 2821 states and 4073 transitions. [2023-03-31 01:46:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:46:42,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-03-31 01:46:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:42,009 INFO L225 Difference]: With dead ends: 2821 [2023-03-31 01:46:42,009 INFO L226 Difference]: Without dead ends: 1807 [2023-03-31 01:46:42,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:42,013 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1496 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:42,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 352 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:46:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2023-03-31 01:46:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1801. [2023-03-31 01:46:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1794 states have (on average 1.4370122630992197) internal successors, (2578), 1797 states have internal predecessors, (2578), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2581 transitions. [2023-03-31 01:46:42,160 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2581 transitions. Word has length 55 [2023-03-31 01:46:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:42,162 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2581 transitions. [2023-03-31 01:46:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2581 transitions. [2023-03-31 01:46:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:46:42,164 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:42,164 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] [2023-03-31 01:46:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:46:42,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:42,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -308411865, now seen corresponding path program 1 times [2023-03-31 01:46:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268684345] [2023-03-31 01:46:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268684345] [2023-03-31 01:46:42,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268684345] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:42,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:42,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:46:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504374591] [2023-03-31 01:46:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:42,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:46:42,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:46:42,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:46:42,586 INFO L87 Difference]: Start difference. First operand 1801 states and 2581 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:44,119 INFO L93 Difference]: Finished difference Result 4623 states and 6675 transitions. [2023-03-31 01:46:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:46:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-03-31 01:46:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:44,131 INFO L225 Difference]: With dead ends: 4623 [2023-03-31 01:46:44,131 INFO L226 Difference]: Without dead ends: 2993 [2023-03-31 01:46:44,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:46:44,135 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 284 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:44,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 772 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:46:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2023-03-31 01:46:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2969. [2023-03-31 01:46:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2962 states have (on average 1.4145847400405132) internal successors, (4190), 2965 states have internal predecessors, (4190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4193 transitions. [2023-03-31 01:46:44,348 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4193 transitions. Word has length 56 [2023-03-31 01:46:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:44,349 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 4193 transitions. [2023-03-31 01:46:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4193 transitions. [2023-03-31 01:46:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:46:44,351 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:44,351 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] [2023-03-31 01:46:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:46:44,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:44,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1372373987, now seen corresponding path program 1 times [2023-03-31 01:46:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66091829] [2023-03-31 01:46:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66091829] [2023-03-31 01:46:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66091829] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:46:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917939904] [2023-03-31 01:46:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:46:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:46:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:46:44,866 INFO L87 Difference]: Start difference. First operand 2969 states and 4193 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:47,021 INFO L93 Difference]: Finished difference Result 9618 states and 13812 transitions. [2023-03-31 01:46:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:46:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:46:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:47,049 INFO L225 Difference]: With dead ends: 9618 [2023-03-31 01:46:47,050 INFO L226 Difference]: Without dead ends: 8315 [2023-03-31 01:46:47,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:46:47,054 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 2840 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:47,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2840 Valid, 616 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:46:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2023-03-31 01:46:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 2983. [2023-03-31 01:46:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2976 states have (on average 1.413978494623656) internal successors, (4208), 2979 states have internal predecessors, (4208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4211 transitions. [2023-03-31 01:46:47,458 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4211 transitions. Word has length 57 [2023-03-31 01:46:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:47,458 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 4211 transitions. [2023-03-31 01:46:47,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4211 transitions. [2023-03-31 01:46:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:46:47,460 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:47,461 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] [2023-03-31 01:46:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:46:47,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:47,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:47,461 INFO L85 PathProgramCache]: Analyzing trace with hash 952638482, now seen corresponding path program 1 times [2023-03-31 01:46:47,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142469760] [2023-03-31 01:46:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:47,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142469760] [2023-03-31 01:46:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142469760] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:46:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132095371] [2023-03-31 01:46:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:47,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:46:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:46:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:46:47,993 INFO L87 Difference]: Start difference. First operand 2983 states and 4211 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:50,578 INFO L93 Difference]: Finished difference Result 10651 states and 15326 transitions. [2023-03-31 01:46:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:46:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:46:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:50,607 INFO L225 Difference]: With dead ends: 10651 [2023-03-31 01:46:50,607 INFO L226 Difference]: Without dead ends: 9539 [2023-03-31 01:46:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:46:50,612 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2141 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 776 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 01:46:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2023-03-31 01:46:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 3005. [2023-03-31 01:46:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2998 states have (on average 1.413942628418946) internal successors, (4239), 3001 states have internal predecessors, (4239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 4242 transitions. [2023-03-31 01:46:51,065 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 4242 transitions. Word has length 57 [2023-03-31 01:46:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:51,065 INFO L495 AbstractCegarLoop]: Abstraction has 3005 states and 4242 transitions. [2023-03-31 01:46:51,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 4242 transitions. [2023-03-31 01:46:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:46:51,067 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:51,068 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] [2023-03-31 01:46:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:46:51,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:51,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1750795860, now seen corresponding path program 1 times [2023-03-31 01:46:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:51,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501245746] [2023-03-31 01:46:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:51,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501245746] [2023-03-31 01:46:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501245746] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:46:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761921129] [2023-03-31 01:46:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:51,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:46:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:46:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:46:51,556 INFO L87 Difference]: Start difference. First operand 3005 states and 4242 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:54,569 INFO L93 Difference]: Finished difference Result 12473 states and 17910 transitions. [2023-03-31 01:46:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:46:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-03-31 01:46:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:54,594 INFO L225 Difference]: With dead ends: 12473 [2023-03-31 01:46:54,595 INFO L226 Difference]: Without dead ends: 11505 [2023-03-31 01:46:54,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:46:54,600 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 3303 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:54,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 669 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:46:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11505 states. [2023-03-31 01:46:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11505 to 3039. [2023-03-31 01:46:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3032 states have (on average 1.412598944591029) internal successors, (4283), 3035 states have internal predecessors, (4283), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 4286 transitions. [2023-03-31 01:46:55,063 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 4286 transitions. Word has length 57 [2023-03-31 01:46:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:55,064 INFO L495 AbstractCegarLoop]: Abstraction has 3039 states and 4286 transitions. [2023-03-31 01:46:55,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:55,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 4286 transitions. [2023-03-31 01:46:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:46:55,066 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:55,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:46:55,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:55,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash 744592770, now seen corresponding path program 1 times [2023-03-31 01:46:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670988397] [2023-03-31 01:46:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670988397] [2023-03-31 01:46:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670988397] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:46:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250483157] [2023-03-31 01:46:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:46:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:46:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:46:55,709 INFO L87 Difference]: Start difference. First operand 3039 states and 4286 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:46:58,157 INFO L93 Difference]: Finished difference Result 7473 states and 10752 transitions. [2023-03-31 01:46:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:46:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:46:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:46:58,170 INFO L225 Difference]: With dead ends: 7473 [2023-03-31 01:46:58,170 INFO L226 Difference]: Without dead ends: 5524 [2023-03-31 01:46:58,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-03-31 01:46:58,175 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2498 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:46:58,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 951 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:46:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2023-03-31 01:46:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 2949. [2023-03-31 01:46:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2942 states have (on average 1.412304554724677) internal successors, (4155), 2945 states have internal predecessors, (4155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4158 transitions. [2023-03-31 01:46:58,660 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4158 transitions. Word has length 58 [2023-03-31 01:46:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:46:58,660 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4158 transitions. [2023-03-31 01:46:58,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:46:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4158 transitions. [2023-03-31 01:46:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:46:58,663 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:46:58,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:46:58,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:46:58,664 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:46:58,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:46:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1124721109, now seen corresponding path program 1 times [2023-03-31 01:46:58,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:46:58,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751908218] [2023-03-31 01:46:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:46:58,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:46:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:46:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:46:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:46:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:46:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751908218] [2023-03-31 01:46:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751908218] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:46:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:46:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:46:59,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350510399] [2023-03-31 01:46:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:46:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:46:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:46:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:46:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:46:59,311 INFO L87 Difference]: Start difference. First operand 2949 states and 4158 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:02,285 INFO L93 Difference]: Finished difference Result 8344 states and 11992 transitions. [2023-03-31 01:47:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:47:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:02,297 INFO L225 Difference]: With dead ends: 8344 [2023-03-31 01:47:02,297 INFO L226 Difference]: Without dead ends: 6555 [2023-03-31 01:47:02,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:02,301 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2493 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:02,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2493 Valid, 1172 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:47:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6555 states. [2023-03-31 01:47:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6555 to 2920. [2023-03-31 01:47:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2913 states have (on average 1.4122897356676964) internal successors, (4114), 2916 states have internal predecessors, (4114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4117 transitions. [2023-03-31 01:47:02,891 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4117 transitions. Word has length 58 [2023-03-31 01:47:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:02,892 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4117 transitions. [2023-03-31 01:47:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4117 transitions. [2023-03-31 01:47:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:02,894 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:02,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:47:02,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:02,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash 70660525, now seen corresponding path program 1 times [2023-03-31 01:47:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:02,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321828506] [2023-03-31 01:47:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:03,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321828506] [2023-03-31 01:47:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321828506] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:03,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:47:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265197496] [2023-03-31 01:47:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:47:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:47:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:47:03,516 INFO L87 Difference]: Start difference. First operand 2920 states and 4117 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:06,499 INFO L93 Difference]: Finished difference Result 7124 states and 10246 transitions. [2023-03-31 01:47:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-03-31 01:47:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:06,507 INFO L225 Difference]: With dead ends: 7124 [2023-03-31 01:47:06,507 INFO L226 Difference]: Without dead ends: 7119 [2023-03-31 01:47:06,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:06,509 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2406 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:06,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 1244 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7119 states. [2023-03-31 01:47:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7119 to 2920. [2023-03-31 01:47:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2913 states have (on average 1.4116031582560933) internal successors, (4112), 2916 states have internal predecessors, (4112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4115 transitions. [2023-03-31 01:47:07,205 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4115 transitions. Word has length 58 [2023-03-31 01:47:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:07,206 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4115 transitions. [2023-03-31 01:47:07,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4115 transitions. [2023-03-31 01:47:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:07,209 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:07,209 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] [2023-03-31 01:47:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:47:07,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:07,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1237281206, now seen corresponding path program 1 times [2023-03-31 01:47:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514595228] [2023-03-31 01:47:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:07,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514595228] [2023-03-31 01:47:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514595228] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:07,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57989973] [2023-03-31 01:47:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:07,608 INFO L87 Difference]: Start difference. First operand 2920 states and 4115 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:09,066 INFO L93 Difference]: Finished difference Result 4190 states and 5956 transitions. [2023-03-31 01:47:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:09,070 INFO L225 Difference]: With dead ends: 4190 [2023-03-31 01:47:09,070 INFO L226 Difference]: Without dead ends: 2927 [2023-03-31 01:47:09,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:09,073 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 226 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:09,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 807 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2023-03-31 01:47:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2920. [2023-03-31 01:47:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2913 states have (on average 1.3978716100240303) internal successors, (4072), 2916 states have internal predecessors, (4072), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4075 transitions. [2023-03-31 01:47:09,605 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4075 transitions. Word has length 59 [2023-03-31 01:47:09,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:09,605 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4075 transitions. [2023-03-31 01:47:09,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4075 transitions. [2023-03-31 01:47:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:09,607 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:09,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:09,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:47:09,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:09,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1347037902, now seen corresponding path program 1 times [2023-03-31 01:47:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661218206] [2023-03-31 01:47:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661218206] [2023-03-31 01:47:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661218206] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:09,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:09,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948573963] [2023-03-31 01:47:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:09,969 INFO L87 Difference]: Start difference. First operand 2920 states and 4075 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:11,398 INFO L93 Difference]: Finished difference Result 4259 states and 5992 transitions. [2023-03-31 01:47:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:11,403 INFO L225 Difference]: With dead ends: 4259 [2023-03-31 01:47:11,404 INFO L226 Difference]: Without dead ends: 2926 [2023-03-31 01:47:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:11,406 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 242 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:11,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 813 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2023-03-31 01:47:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2920. [2023-03-31 01:47:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2913 states have (on average 1.3855132166151733) internal successors, (4036), 2916 states have internal predecessors, (4036), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4039 transitions. [2023-03-31 01:47:11,959 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4039 transitions. Word has length 59 [2023-03-31 01:47:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:11,959 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4039 transitions. [2023-03-31 01:47:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4039 transitions. [2023-03-31 01:47:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 01:47:11,962 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:11,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:47:11,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:11,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 810287511, now seen corresponding path program 1 times [2023-03-31 01:47:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:11,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450683869] [2023-03-31 01:47:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450683869] [2023-03-31 01:47:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450683869] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:12,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105464218] [2023-03-31 01:47:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:12,333 INFO L87 Difference]: Start difference. First operand 2920 states and 4039 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:13,728 INFO L93 Difference]: Finished difference Result 4001 states and 5545 transitions. [2023-03-31 01:47:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-03-31 01:47:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:13,731 INFO L225 Difference]: With dead ends: 4001 [2023-03-31 01:47:13,732 INFO L226 Difference]: Without dead ends: 2911 [2023-03-31 01:47:13,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:13,734 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 261 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:13,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 824 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-03-31 01:47:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2905. [2023-03-31 01:47:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2898 states have (on average 1.3581780538302277) internal successors, (3936), 2901 states have internal predecessors, (3936), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3939 transitions. [2023-03-31 01:47:14,268 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3939 transitions. Word has length 59 [2023-03-31 01:47:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:14,268 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 3939 transitions. [2023-03-31 01:47:14,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3939 transitions. [2023-03-31 01:47:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:14,270 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:14,270 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] [2023-03-31 01:47:14,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:47:14,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:14,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash -484882279, now seen corresponding path program 1 times [2023-03-31 01:47:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402675459] [2023-03-31 01:47:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402675459] [2023-03-31 01:47:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402675459] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:14,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:14,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507894997] [2023-03-31 01:47:14,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:14,616 INFO L87 Difference]: Start difference. First operand 2905 states and 3939 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:16,155 INFO L93 Difference]: Finished difference Result 4580 states and 6268 transitions. [2023-03-31 01:47:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-03-31 01:47:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:16,159 INFO L225 Difference]: With dead ends: 4580 [2023-03-31 01:47:16,159 INFO L226 Difference]: Without dead ends: 3323 [2023-03-31 01:47:16,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:47:16,162 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 329 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:16,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 528 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:47:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2023-03-31 01:47:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 2723. [2023-03-31 01:47:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2716 states have (on average 1.362297496318115) internal successors, (3700), 2719 states have internal predecessors, (3700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3703 transitions. [2023-03-31 01:47:16,630 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3703 transitions. Word has length 60 [2023-03-31 01:47:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:16,630 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3703 transitions. [2023-03-31 01:47:16,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:47:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3703 transitions. [2023-03-31 01:47:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-03-31 01:47:16,632 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:16,632 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] [2023-03-31 01:47:16,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:47:16,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:16,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2104042954, now seen corresponding path program 1 times [2023-03-31 01:47:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56582066] [2023-03-31 01:47:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56582066] [2023-03-31 01:47:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56582066] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:17,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:17,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:47:17,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082469560] [2023-03-31 01:47:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:17,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:47:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:47:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:47:17,714 INFO L87 Difference]: Start difference. First operand 2723 states and 3703 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)