/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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:47:03,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:47:03,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:47:03,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:47:03,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:47:03,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:47:03,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:47:03,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:47:03,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:47:03,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:47:03,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:47:03,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:47:03,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:47:03,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:47:03,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:47:03,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:47:03,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:47:03,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:47:03,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:47:03,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:47:03,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:47:03,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:47:03,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:47:03,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:47:03,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:47:03,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:47:03,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:47:03,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:47:03,258 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 01:47:03,288 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:47:03,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:47:03,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:47:03,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:47:03,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:47:03,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:47:03,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:47:03,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:47:03,290 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:47:03,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:47:03,291 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:47:03,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:47:03,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:47:03,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:47:03,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:47:03,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:47:03,294 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:47:03,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:47:03,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:47:03,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:47:03,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:47:03,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:47:03,548 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:47:03,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:47:04,727 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:47:05,015 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:47:05,015 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:47:05,030 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6deed4c91/035d9c7f92c14a0f9cae0437ffe2d6dd/FLAG32e6963f9 [2023-03-31 01:47:05,042 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6deed4c91/035d9c7f92c14a0f9cae0437ffe2d6dd [2023-03-31 01:47:05,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:47:05,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:47:05,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:47:05,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:47:05,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:47:05,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f0ec9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05, skipping insertion in model container [2023-03-31 01:47:05,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:47:05,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:47:05,324 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2023-03-31 01:47:05,363 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2023-03-31 01:47:05,373 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2023-03-31 01:47:05,387 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2023-03-31 01:47:05,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:47:05,596 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:47:05,657 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2023-03-31 01:47:05,692 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2023-03-31 01:47:05,704 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2023-03-31 01:47:05,707 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.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2023-03-31 01:47:05,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:47:05,825 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:47:05,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05 WrapperNode [2023-03-31 01:47:05,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:47:05,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:47:05,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:47:05,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:47:05,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:47:05,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:47:05,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:47:05,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:47:05,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (1/1) ... [2023-03-31 01:47:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:47:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:47:06,026 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 01:47:06,050 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 01:47:06,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:47:06,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:47:06,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:47:06,069 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:47:06,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:47:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:47:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:47:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:47:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:47:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:47:06,303 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:47:06,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:47:07,537 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:47:07,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:47:07,554 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:47:07,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:47:07 BoogieIcfgContainer [2023-03-31 01:47:07,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:47:07,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:47:07,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:47:07,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:47:07,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:47:05" (1/3) ... [2023-03-31 01:47:07,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@904ea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:47:07, skipping insertion in model container [2023-03-31 01:47:07,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:47:05" (2/3) ... [2023-03-31 01:47:07,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@904ea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:47:07, skipping insertion in model container [2023-03-31 01:47:07,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:47:07" (3/3) ... [2023-03-31 01:47:07,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:47:07,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:47:07,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-03-31 01:47:07,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:47:07,646 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;@4ee65c3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:47:07,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-03-31 01:47:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 446 states, 437 states have (on average 1.8558352402745995) internal successors, (811), 441 states have internal predecessors, (811), 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 01:47:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:47:07,667 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:07,668 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] [2023-03-31 01:47:07,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:07,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1722906326, now seen corresponding path program 1 times [2023-03-31 01:47:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943996672] [2023-03-31 01:47:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:07,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:08,667 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 01:47:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943996672] [2023-03-31 01:47:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943996672] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:08,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:08,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:08,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380665508] [2023-03-31 01:47:08,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:08,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:08,723 INFO L87 Difference]: Start difference. First operand has 446 states, 437 states have (on average 1.8558352402745995) internal successors, (811), 441 states have internal predecessors, (811), 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 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 701 states and 1229 transitions. [2023-03-31 01:47:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:11,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-03-31 01:47:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:11,413 INFO L225 Difference]: With dead ends: 701 [2023-03-31 01:47:11,413 INFO L226 Difference]: Without dead ends: 544 [2023-03-31 01:47:11,416 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 01:47:11,419 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 323 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:11,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1446 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 01:47:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-03-31 01:47:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2023-03-31 01:47:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 531 states have (on average 1.3370998116760828) internal successors, (710), 534 states have internal predecessors, (710), 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 01:47:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 713 transitions. [2023-03-31 01:47:11,493 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 713 transitions. Word has length 53 [2023-03-31 01:47:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:11,493 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 713 transitions. [2023-03-31 01:47:11,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:47:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 713 transitions. [2023-03-31 01:47:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:47:11,497 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:11,497 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] [2023-03-31 01:47:11,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:47:11,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:11,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash -774339817, now seen corresponding path program 1 times [2023-03-31 01:47:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:11,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904153410] [2023-03-31 01:47:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:11,971 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 01:47:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904153410] [2023-03-31 01:47:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904153410] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676487661] [2023-03-31 01:47:11,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:11,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:11,975 INFO L87 Difference]: Start difference. First operand 538 states and 713 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:47:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:13,851 INFO L93 Difference]: Finished difference Result 939 states and 1299 transitions. [2023-03-31 01:47:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-03-31 01:47:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:13,855 INFO L225 Difference]: With dead ends: 939 [2023-03-31 01:47:13,855 INFO L226 Difference]: Without dead ends: 717 [2023-03-31 01:47:13,857 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 01:47:13,858 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 312 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:13,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1016 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:47:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-03-31 01:47:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2023-03-31 01:47:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 704 states have (on average 1.3650568181818181) internal successors, (961), 707 states have internal predecessors, (961), 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 01:47:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 964 transitions. [2023-03-31 01:47:13,897 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 964 transitions. Word has length 53 [2023-03-31 01:47:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:13,898 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 964 transitions. [2023-03-31 01:47:13,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:47:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 964 transitions. [2023-03-31 01:47:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:47:13,900 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:13,900 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] [2023-03-31 01:47:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:47:13,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:13,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 904158291, now seen corresponding path program 1 times [2023-03-31 01:47:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:13,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263701279] [2023-03-31 01:47:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:14,347 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 01:47:14,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263701279] [2023-03-31 01:47:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263701279] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970631197] [2023-03-31 01:47:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:14,355 INFO L87 Difference]: Start difference. First operand 711 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:47:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:16,277 INFO L93 Difference]: Finished difference Result 1367 states and 1915 transitions. [2023-03-31 01:47:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-03-31 01:47:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:16,281 INFO L225 Difference]: With dead ends: 1367 [2023-03-31 01:47:16,281 INFO L226 Difference]: Without dead ends: 1038 [2023-03-31 01:47:16,283 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 01:47:16,284 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 298 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:16,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1080 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 01:47:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-03-31 01:47:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2023-03-31 01:47:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1024 states have (on average 1.3798828125) internal successors, (1413), 1027 states have internal predecessors, (1413), 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 01:47:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1416 transitions. [2023-03-31 01:47:16,345 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1416 transitions. Word has length 53 [2023-03-31 01:47:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:16,345 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1416 transitions. [2023-03-31 01:47:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 01:47:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1416 transitions. [2023-03-31 01:47:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-03-31 01:47:16,347 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:16,347 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] [2023-03-31 01:47:16,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:47:16,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:16,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash 798117360, now seen corresponding path program 1 times [2023-03-31 01:47:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:16,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391779559] [2023-03-31 01:47:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:16,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:16,876 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 01:47:16,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391779559] [2023-03-31 01:47:16,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391779559] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:16,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:16,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573281838] [2023-03-31 01:47:16,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:16,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:16,878 INFO L87 Difference]: Start difference. First operand 1031 states and 1416 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 01:47:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:18,579 INFO L93 Difference]: Finished difference Result 2120 states and 2963 transitions. [2023-03-31 01:47:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 53 [2023-03-31 01:47:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:18,585 INFO L225 Difference]: With dead ends: 2120 [2023-03-31 01:47:18,585 INFO L226 Difference]: Without dead ends: 1258 [2023-03-31 01:47:18,588 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 01:47:18,590 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1698 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:18,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 410 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-03-31 01:47:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1248. [2023-03-31 01:47:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1241 states have (on average 1.3932312651087833) internal successors, (1729), 1244 states have internal predecessors, (1729), 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 01:47:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1732 transitions. [2023-03-31 01:47:18,679 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1732 transitions. Word has length 53 [2023-03-31 01:47:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:18,680 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1732 transitions. [2023-03-31 01:47:18,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 01:47:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1732 transitions. [2023-03-31 01:47:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 01:47:18,683 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:18,683 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 01:47:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:47:18,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:18,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2036265882, now seen corresponding path program 1 times [2023-03-31 01:47:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578635124] [2023-03-31 01:47:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578635124] [2023-03-31 01:47:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578635124] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:19,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658330816] [2023-03-31 01:47:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:19,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:19,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:19,209 INFO L87 Difference]: Start difference. First operand 1248 states and 1732 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 01:47:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:20,871 INFO L93 Difference]: Finished difference Result 2675 states and 3755 transitions. [2023-03-31 01:47:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:20,871 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 01:47:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:20,877 INFO L225 Difference]: With dead ends: 2675 [2023-03-31 01:47:20,877 INFO L226 Difference]: Without dead ends: 1596 [2023-03-31 01:47:20,879 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 01:47:20,880 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1504 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:20,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 366 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:47:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-03-31 01:47:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1583. [2023-03-31 01:47:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1576 states have (on average 1.3908629441624365) internal successors, (2192), 1579 states have internal predecessors, (2192), 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 01:47:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2195 transitions. [2023-03-31 01:47:21,000 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2195 transitions. Word has length 54 [2023-03-31 01:47:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:21,000 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2195 transitions. [2023-03-31 01:47:21,001 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 01:47:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2195 transitions. [2023-03-31 01:47:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 01:47:21,003 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:21,003 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 01:47:21,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:47:21,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:21,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1511705956, now seen corresponding path program 1 times [2023-03-31 01:47:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857214473] [2023-03-31 01:47:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:21,546 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 01:47:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857214473] [2023-03-31 01:47:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857214473] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:21,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592127899] [2023-03-31 01:47:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:21,548 INFO L87 Difference]: Start difference. First operand 1583 states and 2195 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 01:47:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:23,782 INFO L93 Difference]: Finished difference Result 5044 states and 7192 transitions. [2023-03-31 01:47:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:23,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 01:47:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:23,800 INFO L225 Difference]: With dead ends: 5044 [2023-03-31 01:47:23,800 INFO L226 Difference]: Without dead ends: 4611 [2023-03-31 01:47:23,803 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 01:47:23,804 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 3298 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:23,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3298 Valid, 772 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:47:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2023-03-31 01:47:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 1595. [2023-03-31 01:47:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1588 states have (on average 1.3904282115869018) internal successors, (2208), 1591 states have internal predecessors, (2208), 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 01:47:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2211 transitions. [2023-03-31 01:47:24,043 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2211 transitions. Word has length 55 [2023-03-31 01:47:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:24,043 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2211 transitions. [2023-03-31 01:47:24,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 01:47:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2211 transitions. [2023-03-31 01:47:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 01:47:24,045 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:24,046 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 01:47:24,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:47:24,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:24,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:24,046 INFO L85 PathProgramCache]: Analyzing trace with hash -113047065, now seen corresponding path program 1 times [2023-03-31 01:47:24,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97549817] [2023-03-31 01:47:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:24,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:24,497 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 01:47:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97549817] [2023-03-31 01:47:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97549817] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:47:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374254586] [2023-03-31 01:47:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:47:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:47:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:47:24,499 INFO L87 Difference]: Start difference. First operand 1595 states and 2211 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 01:47:25,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:25,907 INFO L93 Difference]: Finished difference Result 3491 states and 4894 transitions. [2023-03-31 01:47:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:47:25,908 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 01:47:25,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:25,916 INFO L225 Difference]: With dead ends: 3491 [2023-03-31 01:47:25,916 INFO L226 Difference]: Without dead ends: 2074 [2023-03-31 01:47:25,919 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 01:47:25,920 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1357 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 334 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2023-03-31 01:47:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1536. [2023-03-31 01:47:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1529 states have (on average 1.3878351863963374) internal successors, (2122), 1532 states have internal predecessors, (2122), 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 01:47:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2125 transitions. [2023-03-31 01:47:26,097 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2125 transitions. Word has length 55 [2023-03-31 01:47:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:26,097 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2125 transitions. [2023-03-31 01:47:26,098 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 01:47:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2125 transitions. [2023-03-31 01:47:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:47:26,099 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:26,099 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 01:47:26,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:47:26,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:26,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash -704111551, now seen corresponding path program 1 times [2023-03-31 01:47:26,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:26,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440949210] [2023-03-31 01:47:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:26,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:26,583 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 01:47:26,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:26,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440949210] [2023-03-31 01:47:26,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440949210] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:26,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:26,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:26,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200401525] [2023-03-31 01:47:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:26,585 INFO L87 Difference]: Start difference. First operand 1536 states and 2125 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 01:47:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:28,697 INFO L93 Difference]: Finished difference Result 5320 states and 7571 transitions. [2023-03-31 01:47:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 56 [2023-03-31 01:47:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:28,717 INFO L225 Difference]: With dead ends: 5320 [2023-03-31 01:47:28,718 INFO L226 Difference]: Without dead ends: 4772 [2023-03-31 01:47:28,720 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 01:47:28,722 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1998 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:28,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 737 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2023-03-31 01:47:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 1558. [2023-03-31 01:47:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1551 states have (on average 1.3881366860090265) internal successors, (2153), 1554 states have internal predecessors, (2153), 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 01:47:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2156 transitions. [2023-03-31 01:47:28,972 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2156 transitions. Word has length 56 [2023-03-31 01:47:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:28,972 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2156 transitions. [2023-03-31 01:47:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 01:47:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2156 transitions. [2023-03-31 01:47:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 01:47:28,974 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:28,974 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 01:47:28,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:47:28,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:28,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 455389900, now seen corresponding path program 1 times [2023-03-31 01:47:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927534202] [2023-03-31 01:47:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:29,474 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 01:47:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927534202] [2023-03-31 01:47:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927534202] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:29,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:47:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732099726] [2023-03-31 01:47:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:29,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:47:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:47:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:47:29,477 INFO L87 Difference]: Start difference. First operand 1558 states and 2156 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 01:47:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:31,433 INFO L93 Difference]: Finished difference Result 4983 states and 7037 transitions. [2023-03-31 01:47:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:47:31,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 56 [2023-03-31 01:47:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:31,447 INFO L225 Difference]: With dead ends: 4983 [2023-03-31 01:47:31,447 INFO L226 Difference]: Without dead ends: 4268 [2023-03-31 01:47:31,450 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 01:47:31,451 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 2620 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 602 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2023-03-31 01:47:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 1572. [2023-03-31 01:47:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1565 states have (on average 1.387220447284345) internal successors, (2171), 1568 states have internal predecessors, (2171), 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 01:47:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2174 transitions. [2023-03-31 01:47:31,734 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2174 transitions. Word has length 56 [2023-03-31 01:47:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:31,734 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2174 transitions. [2023-03-31 01:47:31,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 01:47:31,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2174 transitions. [2023-03-31 01:47:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:47:31,736 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:31,736 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 01:47:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:47:31,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:31,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1621157358, now seen corresponding path program 1 times [2023-03-31 01:47:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808786101] [2023-03-31 01:47:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:31,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:32,453 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 01:47:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808786101] [2023-03-31 01:47:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808786101] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:47:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598731135] [2023-03-31 01:47:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:47:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:47:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:47:32,455 INFO L87 Difference]: Start difference. First operand 1572 states and 2174 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:35,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:35,077 INFO L93 Difference]: Finished difference Result 5350 states and 7649 transitions. [2023-03-31 01:47:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:35,102 INFO L225 Difference]: With dead ends: 5350 [2023-03-31 01:47:35,102 INFO L226 Difference]: Without dead ends: 4434 [2023-03-31 01:47:35,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:35,106 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 2376 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:35,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 1145 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2023-03-31 01:47:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 1543. [2023-03-31 01:47:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1536 states have (on average 1.38671875) internal successors, (2130), 1539 states have internal predecessors, (2130), 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 01:47:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2133 transitions. [2023-03-31 01:47:35,356 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2133 transitions. Word has length 57 [2023-03-31 01:47:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:35,356 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2133 transitions. [2023-03-31 01:47:35,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2133 transitions. [2023-03-31 01:47:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:47:35,359 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:35,359 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 01:47:35,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:47:35,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:35,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1619749354, now seen corresponding path program 1 times [2023-03-31 01:47:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033314574] [2023-03-31 01:47:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:47:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033314574] [2023-03-31 01:47:36,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033314574] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:36,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:36,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:47:36,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466725732] [2023-03-31 01:47:36,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:36,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 01:47:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:36,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 01:47:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-03-31 01:47:36,080 INFO L87 Difference]: Start difference. First operand 1543 states and 2133 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:38,376 INFO L93 Difference]: Finished difference Result 3571 states and 5055 transitions. [2023-03-31 01:47:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 01:47:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:38,385 INFO L225 Difference]: With dead ends: 3571 [2023-03-31 01:47:38,385 INFO L226 Difference]: Without dead ends: 3566 [2023-03-31 01:47:38,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-03-31 01:47:38,387 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2212 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:38,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1188 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:47:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2023-03-31 01:47:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 1543. [2023-03-31 01:47:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1536 states have (on average 1.3854166666666667) internal successors, (2128), 1539 states have internal predecessors, (2128), 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 01:47:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2131 transitions. [2023-03-31 01:47:38,693 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2131 transitions. Word has length 57 [2023-03-31 01:47:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:38,694 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2131 transitions. [2023-03-31 01:47:38,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 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 01:47:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2131 transitions. [2023-03-31 01:47:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-31 01:47:38,697 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:38,697 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 01:47:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:47:38,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:38,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash -672590849, now seen corresponding path program 1 times [2023-03-31 01:47:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611455731] [2023-03-31 01:47:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:39,351 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 01:47:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611455731] [2023-03-31 01:47:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611455731] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:39,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:39,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:47:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503479316] [2023-03-31 01:47:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:47:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:47:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:47:39,353 INFO L87 Difference]: Start difference. First operand 1543 states and 2131 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 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 01:47:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:41,470 INFO L93 Difference]: Finished difference Result 3990 states and 5627 transitions. [2023-03-31 01:47:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:47:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 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 01:47:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:41,475 INFO L225 Difference]: With dead ends: 3990 [2023-03-31 01:47:41,475 INFO L226 Difference]: Without dead ends: 2940 [2023-03-31 01:47:41,477 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 01:47:41,478 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2263 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:41,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 898 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:47:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-03-31 01:47:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1543. [2023-03-31 01:47:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1536 states have (on average 1.3821614583333333) internal successors, (2123), 1539 states have internal predecessors, (2123), 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 01:47:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2126 transitions. [2023-03-31 01:47:41,761 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2126 transitions. Word has length 57 [2023-03-31 01:47:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:41,761 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2126 transitions. [2023-03-31 01:47:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 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 01:47:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2126 transitions. [2023-03-31 01:47:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:41,764 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:41,764 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 01:47:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:47:41,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:41,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2124151305, now seen corresponding path program 1 times [2023-03-31 01:47:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:41,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788939366] [2023-03-31 01:47:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:42,170 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 01:47:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788939366] [2023-03-31 01:47:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788939366] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:42,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614104638] [2023-03-31 01:47:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:42,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:42,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:42,171 INFO L87 Difference]: Start difference. First operand 1543 states and 2126 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:43,435 INFO L93 Difference]: Finished difference Result 2200 states and 3059 transitions. [2023-03-31 01:47:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-03-31 01:47:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:43,438 INFO L225 Difference]: With dead ends: 2200 [2023-03-31 01:47:43,438 INFO L226 Difference]: Without dead ends: 1549 [2023-03-31 01:47:43,440 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 01:47:43,440 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 224 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:43,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 759 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:47:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-03-31 01:47:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1543. [2023-03-31 01:47:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1536 states have (on average 1.369140625) internal successors, (2103), 1539 states have internal predecessors, (2103), 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 01:47:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2106 transitions. [2023-03-31 01:47:43,776 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2106 transitions. Word has length 58 [2023-03-31 01:47:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:43,776 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2106 transitions. [2023-03-31 01:47:43,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2106 transitions. [2023-03-31 01:47:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:43,778 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:43,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:47:43,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:47:43,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:43,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2014394609, now seen corresponding path program 1 times [2023-03-31 01:47:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980127736] [2023-03-31 01:47:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:44,139 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 01:47:44,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980127736] [2023-03-31 01:47:44,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980127736] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:44,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:44,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742327023] [2023-03-31 01:47:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:44,141 INFO L87 Difference]: Start difference. First operand 1543 states and 2106 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:45,306 INFO L93 Difference]: Finished difference Result 2167 states and 2983 transitions. [2023-03-31 01:47:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-03-31 01:47:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:45,309 INFO L225 Difference]: With dead ends: 2167 [2023-03-31 01:47:45,309 INFO L226 Difference]: Without dead ends: 1550 [2023-03-31 01:47:45,310 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 01:47:45,311 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 208 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:45,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 748 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:47:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-03-31 01:47:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1543. [2023-03-31 01:47:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1536 states have (on average 1.353515625) internal successors, (2079), 1539 states have internal predecessors, (2079), 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 01:47:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2082 transitions. [2023-03-31 01:47:45,625 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2082 transitions. Word has length 58 [2023-03-31 01:47:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:45,625 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2082 transitions. [2023-03-31 01:47:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2082 transitions. [2023-03-31 01:47:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 01:47:45,628 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:45,628 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 01:47:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:47:45,628 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:45,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash 884737196, now seen corresponding path program 1 times [2023-03-31 01:47:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455980880] [2023-03-31 01:47:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:45,971 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 01:47:45,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:45,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455980880] [2023-03-31 01:47:45,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455980880] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:45,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349783637] [2023-03-31 01:47:45,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:45,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:45,973 INFO L87 Difference]: Start difference. First operand 1543 states and 2082 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:47,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:47,066 INFO L93 Difference]: Finished difference Result 2071 states and 2795 transitions. [2023-03-31 01:47:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:47:47,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-03-31 01:47:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:47,069 INFO L225 Difference]: With dead ends: 2071 [2023-03-31 01:47:47,069 INFO L226 Difference]: Without dead ends: 1512 [2023-03-31 01:47:47,070 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 01:47:47,071 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 259 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:47,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 684 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:47:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2023-03-31 01:47:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1510. [2023-03-31 01:47:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1503 states have (on average 1.3260146373918829) internal successors, (1993), 1506 states have internal predecessors, (1993), 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 01:47:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1996 transitions. [2023-03-31 01:47:47,341 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1996 transitions. Word has length 58 [2023-03-31 01:47:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:47,342 INFO L495 AbstractCegarLoop]: Abstraction has 1510 states and 1996 transitions. [2023-03-31 01:47:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 01:47:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1996 transitions. [2023-03-31 01:47:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:47,344 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:47,344 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 01:47:47,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:47:47,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:47,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash 119314598, now seen corresponding path program 1 times [2023-03-31 01:47:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566577061] [2023-03-31 01:47:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:47,706 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 01:47:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566577061] [2023-03-31 01:47:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566577061] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:47,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:47:47,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815466340] [2023-03-31 01:47:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:47,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:47:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:47:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:47:47,708 INFO L87 Difference]: Start difference. First operand 1510 states and 1996 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 01:47:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:48,924 INFO L93 Difference]: Finished difference Result 2668 states and 3571 transitions. [2023-03-31 01:47:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:47:48,924 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 01:47:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:48,927 INFO L225 Difference]: With dead ends: 2668 [2023-03-31 01:47:48,927 INFO L226 Difference]: Without dead ends: 1798 [2023-03-31 01:47:48,928 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 01:47:48,929 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 289 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:48,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 471 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:47:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-03-31 01:47:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1430. [2023-03-31 01:47:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1423 states have (on average 1.3281799016163036) internal successors, (1890), 1426 states have internal predecessors, (1890), 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 01:47:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1893 transitions. [2023-03-31 01:47:49,231 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1893 transitions. Word has length 60 [2023-03-31 01:47:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:49,232 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1893 transitions. [2023-03-31 01:47:49,232 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 01:47:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1893 transitions. [2023-03-31 01:47:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:49,233 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:49,233 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 01:47:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 01:47:49,233 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:49,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -840726246, now seen corresponding path program 1 times [2023-03-31 01:47:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563164019] [2023-03-31 01:47:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:47:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:47:50,307 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 01:47:50,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:47:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563164019] [2023-03-31 01:47:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563164019] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:47:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:47:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:47:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156853806] [2023-03-31 01:47:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:47:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:47:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:47:50,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:47:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:47:50,309 INFO L87 Difference]: Start difference. First operand 1430 states and 1893 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 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 01:47:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:47:53,722 INFO L93 Difference]: Finished difference Result 3705 states and 5054 transitions. [2023-03-31 01:47:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 01:47:53,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 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 01:47:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:47:53,727 INFO L225 Difference]: With dead ends: 3705 [2023-03-31 01:47:53,727 INFO L226 Difference]: Without dead ends: 3641 [2023-03-31 01:47:53,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2023-03-31 01:47:53,729 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1657 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:47:53,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 3022 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:47:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2023-03-31 01:47:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 1415. [2023-03-31 01:47:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1409 states have (on average 1.3286018452803408) internal successors, (1872), 1411 states have internal predecessors, (1872), 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 01:47:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1875 transitions. [2023-03-31 01:47:54,117 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1875 transitions. Word has length 60 [2023-03-31 01:47:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:47:54,117 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1875 transitions. [2023-03-31 01:47:54,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 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 01:47:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1875 transitions. [2023-03-31 01:47:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-31 01:47:54,119 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:47:54,119 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 01:47:54,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-03-31 01:47:54,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:47:54,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:47:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -148633903, now seen corresponding path program 1 times [2023-03-31 01:47:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:47:54,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426187397] [2023-03-31 01:47:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:47:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:47:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat