/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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:24:26,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:24:26,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:24:26,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:24:26,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:24:26,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:24:26,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:24:26,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:24:26,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:24:26,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:24:26,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:24:26,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:24:26,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:24:26,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:24:26,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:24:26,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:24:26,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:24:26,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:24:26,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:24:26,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:24:26,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:24:26,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:24:26,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:24:26,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:24:26,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:24:26,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:24:26,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:24:26,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:24:26,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:24:26,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:24:26,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:24:26,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:24:26,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:24:26,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:24:26,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:24:26,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:24:26,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:24:26,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:24:26,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:24:26,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:24:26,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:24:26,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:24:26,248 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:24:26,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:24:26,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:24:26,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:24:26,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:24:26,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:24:26,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:24:26,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:24:26,252 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:24:26,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:24:26,253 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:24:26,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:24:26,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:24:26,254 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:24:26,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:24:26,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:24:26,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:24:26,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:24:26,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:24:26,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:24:26,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:24:26,256 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:24:26,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:24:26,257 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:24:26,257 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:24:26,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:24:26,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:24:26,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:24:26,537 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:24:26,538 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:24:26,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:24:27,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:24:27,999 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:24:28,003 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:24:28,014 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c981f11c/8742a245887742a1b5c799be3c1c7389/FLAGa7ddb95a3 [2023-04-02 06:24:28,038 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c981f11c/8742a245887742a1b5c799be3c1c7389 [2023-04-02 06:24:28,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:24:28,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:24:28,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:24:28,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:24:28,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:24:28,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c644824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28, skipping insertion in model container [2023-04-02 06:24:28,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:24:28,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:24:28,271 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2023-04-02 06:24:28,288 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2023-04-02 06:24:28,319 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2023-04-02 06:24:28,323 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2023-04-02 06:24:28,330 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2023-04-02 06:24:28,333 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2023-04-02 06:24:28,337 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2023-04-02 06:24:28,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:24:28,398 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:24:28,449 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2023-04-02 06:24:28,457 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2023-04-02 06:24:28,461 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2023-04-02 06:24:28,464 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2023-04-02 06:24:28,474 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2023-04-02 06:24:28,477 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2023-04-02 06:24:28,480 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.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2023-04-02 06:24:28,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:24:28,537 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:24:28,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28 WrapperNode [2023-04-02 06:24:28,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:24:28,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:24:28,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:24:28,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:24:28,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:24:28,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:24:28,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:24:28,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:24:28,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (1/1) ... [2023-04-02 06:24:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:24:28,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:24:28,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:24:28,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:24:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:24:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:24:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:24:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:24:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:24:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:24:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:24:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:24:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:24:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:24:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:24:28,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:24:28,847 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:24:28,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:24:29,607 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:24:29,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:24:29,618 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:24:29,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:24:29 BoogieIcfgContainer [2023-04-02 06:24:29,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:24:29,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:24:29,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:24:29,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:24:29,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:24:28" (1/3) ... [2023-04-02 06:24:29,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa03d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:24:29, skipping insertion in model container [2023-04-02 06:24:29,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:24:28" (2/3) ... [2023-04-02 06:24:29,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa03d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:24:29, skipping insertion in model container [2023-04-02 06:24:29,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:24:29" (3/3) ... [2023-04-02 06:24:29,632 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:24:29,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:24:29,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 06:24:29,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:24:29,710 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;@16190736, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:24:29,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 06:24:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 200 states have (on average 1.82) internal successors, (364), 208 states have internal predecessors, (364), 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) [2023-04-02 06:24:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 06:24:29,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:29,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:29,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:29,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash -594872832, now seen corresponding path program 1 times [2023-04-02 06:24:29,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610875121] [2023-04-02 06:24:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610875121] [2023-04-02 06:24:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610875121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:24:30,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862971735] [2023-04-02 06:24:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:30,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:24:30,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:24:30,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:24:30,601 INFO L87 Difference]: Start difference. First operand has 213 states, 200 states have (on average 1.82) internal successors, (364), 208 states have internal predecessors, (364), 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 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-04-02 06:24:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:31,679 INFO L93 Difference]: Finished difference Result 349 states and 578 transitions. [2023-04-02 06:24:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:24:31,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 51 [2023-04-02 06:24:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:31,692 INFO L225 Difference]: With dead ends: 349 [2023-04-02 06:24:31,693 INFO L226 Difference]: Without dead ends: 181 [2023-04-02 06:24:31,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:24:31,702 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 850 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 249 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:24:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-04-02 06:24:31,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-04-02 06:24:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 171 states have (on average 1.2690058479532165) internal successors, (217), 177 states have internal predecessors, (217), 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) [2023-04-02 06:24:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2023-04-02 06:24:31,761 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 51 [2023-04-02 06:24:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:31,762 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2023-04-02 06:24:31,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-04-02 06:24:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2023-04-02 06:24:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-02 06:24:31,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:31,769 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] [2023-04-02 06:24:31,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:24:31,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:31,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash 371764749, now seen corresponding path program 1 times [2023-04-02 06:24:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:31,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478935597] [2023-04-02 06:24:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478935597] [2023-04-02 06:24:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478935597] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:32,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:32,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:24:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109326046] [2023-04-02 06:24:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:32,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:24:32,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:24:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:24:32,148 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-04-02 06:24:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:32,748 INFO L93 Difference]: Finished difference Result 303 states and 378 transitions. [2023-04-02 06:24:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:24:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 52 [2023-04-02 06:24:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:32,753 INFO L225 Difference]: With dead ends: 303 [2023-04-02 06:24:32,753 INFO L226 Difference]: Without dead ends: 171 [2023-04-02 06:24:32,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:24:32,756 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 556 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:32,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 138 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:24:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-04-02 06:24:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-04-02 06:24:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 161 states have (on average 1.2670807453416149) internal successors, (204), 167 states have internal predecessors, (204), 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) [2023-04-02 06:24:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2023-04-02 06:24:32,773 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 52 [2023-04-02 06:24:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:32,774 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2023-04-02 06:24:32,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-04-02 06:24:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2023-04-02 06:24:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 06:24:32,775 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:32,775 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] [2023-04-02 06:24:32,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:24:32,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:32,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 511879490, now seen corresponding path program 1 times [2023-04-02 06:24:32,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120148880] [2023-04-02 06:24:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120148880] [2023-04-02 06:24:33,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120148880] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:33,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:33,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:24:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995917184] [2023-04-02 06:24:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:24:33,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:24:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:24:33,069 INFO L87 Difference]: Start difference. First operand 171 states and 207 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) [2023-04-02 06:24:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:33,626 INFO L93 Difference]: Finished difference Result 293 states and 364 transitions. [2023-04-02 06:24:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:24:33,626 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 [2023-04-02 06:24:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:33,627 INFO L225 Difference]: With dead ends: 293 [2023-04-02 06:24:33,627 INFO L226 Difference]: Without dead ends: 160 [2023-04-02 06:24:33,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:24:33,629 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 541 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:33,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 124 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:24:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-04-02 06:24:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-04-02 06:24:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.2733333333333334) internal successors, (191), 156 states have internal predecessors, (191), 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) [2023-04-02 06:24:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 194 transitions. [2023-04-02 06:24:33,652 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 194 transitions. Word has length 53 [2023-04-02 06:24:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 194 transitions. [2023-04-02 06:24:33,652 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) [2023-04-02 06:24:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 194 transitions. [2023-04-02 06:24:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:24:33,656 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:33,656 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] [2023-04-02 06:24:33,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:24:33,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:33,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1148094681, now seen corresponding path program 1 times [2023-04-02 06:24:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:33,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020328272] [2023-04-02 06:24:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020328272] [2023-04-02 06:24:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020328272] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:34,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:34,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:24:34,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429146728] [2023-04-02 06:24:34,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:24:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:24:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:24:34,202 INFO L87 Difference]: Start difference. First operand 160 states and 194 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-04-02 06:24:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:34,832 INFO L93 Difference]: Finished difference Result 313 states and 386 transitions. [2023-04-02 06:24:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:24:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 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 [2023-04-02 06:24:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:34,835 INFO L225 Difference]: With dead ends: 313 [2023-04-02 06:24:34,835 INFO L226 Difference]: Without dead ends: 231 [2023-04-02 06:24:34,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:24:34,841 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1008 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:34,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 300 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:24:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-04-02 06:24:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2023-04-02 06:24:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.2666666666666666) internal successors, (190), 156 states have internal predecessors, (190), 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) [2023-04-02 06:24:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2023-04-02 06:24:34,874 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 54 [2023-04-02 06:24:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:34,874 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2023-04-02 06:24:34,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 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) [2023-04-02 06:24:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2023-04-02 06:24:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:24:34,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:34,876 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] [2023-04-02 06:24:34,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:24:34,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:34,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:34,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1625805454, now seen corresponding path program 1 times [2023-04-02 06:24:34,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:34,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482842111] [2023-04-02 06:24:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:35,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482842111] [2023-04-02 06:24:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482842111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:35,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:35,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:24:35,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099435614] [2023-04-02 06:24:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:35,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:24:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:24:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:24:35,328 INFO L87 Difference]: Start difference. First operand 160 states and 193 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2023-04-02 06:24:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:36,360 INFO L93 Difference]: Finished difference Result 390 states and 503 transitions. [2023-04-02 06:24:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:24:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 [2023-04-02 06:24:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:36,362 INFO L225 Difference]: With dead ends: 390 [2023-04-02 06:24:36,362 INFO L226 Difference]: Without dead ends: 331 [2023-04-02 06:24:36,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:24:36,363 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1161 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:36,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 647 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:24:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-04-02 06:24:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 160. [2023-04-02 06:24:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.26) internal successors, (189), 156 states have internal predecessors, (189), 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) [2023-04-02 06:24:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2023-04-02 06:24:36,379 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 54 [2023-04-02 06:24:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:36,379 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2023-04-02 06:24:36,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2023-04-02 06:24:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2023-04-02 06:24:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:24:36,380 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:36,380 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] [2023-04-02 06:24:36,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:24:36,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:36,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2111729042, now seen corresponding path program 1 times [2023-04-02 06:24:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:36,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202864490] [2023-04-02 06:24:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:36,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202864490] [2023-04-02 06:24:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202864490] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:36,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:36,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:24:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328935337] [2023-04-02 06:24:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:36,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:24:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:24:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:24:36,862 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2023-04-02 06:24:37,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:37,964 INFO L93 Difference]: Finished difference Result 332 states and 421 transitions. [2023-04-02 06:24:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:24:37,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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 [2023-04-02 06:24:37,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:37,966 INFO L225 Difference]: With dead ends: 332 [2023-04-02 06:24:37,966 INFO L226 Difference]: Without dead ends: 327 [2023-04-02 06:24:37,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:24:37,967 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1023 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:37,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 677 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:24:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-04-02 06:24:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 160. [2023-04-02 06:24:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.2533333333333334) internal successors, (188), 156 states have internal predecessors, (188), 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) [2023-04-02 06:24:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2023-04-02 06:24:37,984 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 54 [2023-04-02 06:24:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:37,984 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2023-04-02 06:24:37,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 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) [2023-04-02 06:24:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2023-04-02 06:24:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:24:37,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:37,985 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] [2023-04-02 06:24:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:24:37,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:37,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 493112010, now seen corresponding path program 1 times [2023-04-02 06:24:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525879308] [2023-04-02 06:24:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:38,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525879308] [2023-04-02 06:24:38,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525879308] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:38,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:24:38,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2571794] [2023-04-02 06:24:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:38,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:38,751 INFO L87 Difference]: Start difference. First operand 160 states and 191 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:40,006 INFO L93 Difference]: Finished difference Result 293 states and 362 transitions. [2023-04-02 06:24:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:24:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-02 06:24:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:40,007 INFO L225 Difference]: With dead ends: 293 [2023-04-02 06:24:40,008 INFO L226 Difference]: Without dead ends: 247 [2023-04-02 06:24:40,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:24:40,009 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 889 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:40,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 843 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:24:40,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-04-02 06:24:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 156. [2023-04-02 06:24:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 147 states have (on average 1.2448979591836735) internal successors, (183), 152 states have internal predecessors, (183), 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) [2023-04-02 06:24:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2023-04-02 06:24:40,035 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 56 [2023-04-02 06:24:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:40,054 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2023-04-02 06:24:40,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2023-04-02 06:24:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:24:40,057 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:40,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:40,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:24:40,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:40,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1790629557, now seen corresponding path program 1 times [2023-04-02 06:24:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914660447] [2023-04-02 06:24:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914660447] [2023-04-02 06:24:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914660447] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:40,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:24:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542620964] [2023-04-02 06:24:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:40,713 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:42,055 INFO L93 Difference]: Finished difference Result 295 states and 368 transitions. [2023-04-02 06:24:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:24:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-02 06:24:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:42,057 INFO L225 Difference]: With dead ends: 295 [2023-04-02 06:24:42,057 INFO L226 Difference]: Without dead ends: 242 [2023-04-02 06:24:42,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:24:42,058 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 820 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:42,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1326 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:24:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-04-02 06:24:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 145. [2023-04-02 06:24:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 137 states have (on average 1.2408759124087592) internal successors, (170), 141 states have internal predecessors, (170), 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) [2023-04-02 06:24:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2023-04-02 06:24:42,084 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 56 [2023-04-02 06:24:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:42,085 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2023-04-02 06:24:42,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:42,086 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2023-04-02 06:24:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:24:42,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:42,086 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] [2023-04-02 06:24:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:24:42,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:42,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1142812502, now seen corresponding path program 1 times [2023-04-02 06:24:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:42,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286764630] [2023-04-02 06:24:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286764630] [2023-04-02 06:24:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286764630] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:42,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:42,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:24:42,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998269981] [2023-04-02 06:24:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:42,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:42,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:42,757 INFO L87 Difference]: Start difference. First operand 145 states and 173 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:43,941 INFO L93 Difference]: Finished difference Result 228 states and 276 transitions. [2023-04-02 06:24:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:24:43,942 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-02 06:24:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:43,943 INFO L225 Difference]: With dead ends: 228 [2023-04-02 06:24:43,943 INFO L226 Difference]: Without dead ends: 224 [2023-04-02 06:24:43,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:24:43,944 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 938 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:43,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 803 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:24:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-04-02 06:24:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 141. [2023-04-02 06:24:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 137 states have internal predecessors, (166), 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) [2023-04-02 06:24:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 169 transitions. [2023-04-02 06:24:43,971 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 169 transitions. Word has length 56 [2023-04-02 06:24:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:43,971 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 169 transitions. [2023-04-02 06:24:43,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 169 transitions. [2023-04-02 06:24:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:24:43,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:43,972 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] [2023-04-02 06:24:43,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:24:43,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:43,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1347438915, now seen corresponding path program 1 times [2023-04-02 06:24:43,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:43,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923802196] [2023-04-02 06:24:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:43,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923802196] [2023-04-02 06:24:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923802196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:44,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:44,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:24:44,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141275563] [2023-04-02 06:24:44,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:44,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:44,515 INFO L87 Difference]: Start difference. First operand 141 states and 169 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 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) [2023-04-02 06:24:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:45,973 INFO L93 Difference]: Finished difference Result 350 states and 445 transitions. [2023-04-02 06:24:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:24:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 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 [2023-04-02 06:24:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:45,976 INFO L225 Difference]: With dead ends: 350 [2023-04-02 06:24:45,976 INFO L226 Difference]: Without dead ends: 343 [2023-04-02 06:24:45,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:24:45,977 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:45,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 487 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:24:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-04-02 06:24:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 145. [2023-04-02 06:24:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 141 states have internal predecessors, (170), 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) [2023-04-02 06:24:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 173 transitions. [2023-04-02 06:24:46,013 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 173 transitions. Word has length 57 [2023-04-02 06:24:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:46,013 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 173 transitions. [2023-04-02 06:24:46,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 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) [2023-04-02 06:24:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 173 transitions. [2023-04-02 06:24:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:24:46,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:46,014 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] [2023-04-02 06:24:46,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:24:46,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:46,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash -514255037, now seen corresponding path program 1 times [2023-04-02 06:24:46,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960237815] [2023-04-02 06:24:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:46,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960237815] [2023-04-02 06:24:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960237815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:24:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762523913] [2023-04-02 06:24:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:24:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:24:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:24:46,419 INFO L87 Difference]: Start difference. First operand 145 states and 173 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) [2023-04-02 06:24:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:47,368 INFO L93 Difference]: Finished difference Result 286 states and 358 transitions. [2023-04-02 06:24:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:24:47,369 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 [2023-04-02 06:24:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:47,370 INFO L225 Difference]: With dead ends: 286 [2023-04-02 06:24:47,370 INFO L226 Difference]: Without dead ends: 226 [2023-04-02 06:24:47,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:24:47,371 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 440 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:47,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 529 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:24:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-04-02 06:24:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 145. [2023-04-02 06:24:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 138 states have (on average 1.2246376811594204) internal successors, (169), 141 states have internal predecessors, (169), 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) [2023-04-02 06:24:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2023-04-02 06:24:47,419 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 57 [2023-04-02 06:24:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:47,419 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2023-04-02 06:24:47,420 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) [2023-04-02 06:24:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2023-04-02 06:24:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:24:47,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:47,424 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] [2023-04-02 06:24:47,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:24:47,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:47,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1285882842, now seen corresponding path program 1 times [2023-04-02 06:24:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:47,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130118863] [2023-04-02 06:24:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:47,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130118863] [2023-04-02 06:24:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130118863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:24:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70824275] [2023-04-02 06:24:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:24:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:24:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:24:47,818 INFO L87 Difference]: Start difference. First operand 145 states and 172 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) [2023-04-02 06:24:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:48,767 INFO L93 Difference]: Finished difference Result 225 states and 271 transitions. [2023-04-02 06:24:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:24:48,767 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 [2023-04-02 06:24:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:48,769 INFO L225 Difference]: With dead ends: 225 [2023-04-02 06:24:48,769 INFO L226 Difference]: Without dead ends: 218 [2023-04-02 06:24:48,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:24:48,770 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 690 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:48,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 610 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:24:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-04-02 06:24:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 145. [2023-04-02 06:24:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 138 states have (on average 1.2173913043478262) internal successors, (168), 141 states have internal predecessors, (168), 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) [2023-04-02 06:24:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2023-04-02 06:24:48,802 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 57 [2023-04-02 06:24:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:48,803 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2023-04-02 06:24:48,803 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) [2023-04-02 06:24:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2023-04-02 06:24:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:24:48,803 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:48,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:48,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:24:48,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:48,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash -995838873, now seen corresponding path program 1 times [2023-04-02 06:24:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199397609] [2023-04-02 06:24:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:48,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199397609] [2023-04-02 06:24:49,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199397609] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:49,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:24:49,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186304542] [2023-04-02 06:24:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:49,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:24:49,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:24:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:24:49,151 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:50,058 INFO L93 Difference]: Finished difference Result 225 states and 270 transitions. [2023-04-02 06:24:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:24:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-02 06:24:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:50,060 INFO L225 Difference]: With dead ends: 225 [2023-04-02 06:24:50,060 INFO L226 Difference]: Without dead ends: 218 [2023-04-02 06:24:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:24:50,061 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 350 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:50,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 608 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:24:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-04-02 06:24:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 141. [2023-04-02 06:24:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 134 states have (on average 1.2164179104477613) internal successors, (163), 137 states have internal predecessors, (163), 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) [2023-04-02 06:24:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2023-04-02 06:24:50,088 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 58 [2023-04-02 06:24:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:50,089 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2023-04-02 06:24:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2023-04-02 06:24:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:24:50,089 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:50,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:24:50,090 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:50,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash -512043110, now seen corresponding path program 1 times [2023-04-02 06:24:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143122491] [2023-04-02 06:24:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:50,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143122491] [2023-04-02 06:24:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143122491] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:50,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:24:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886674676] [2023-04-02 06:24:50,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:50,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:24:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:24:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:24:50,922 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:53,095 INFO L93 Difference]: Finished difference Result 368 states and 450 transitions. [2023-04-02 06:24:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:24:53,096 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-02 06:24:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:53,097 INFO L225 Difference]: With dead ends: 368 [2023-04-02 06:24:53,097 INFO L226 Difference]: Without dead ends: 360 [2023-04-02 06:24:53,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 06:24:53,098 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 911 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:53,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2921 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:24:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-04-02 06:24:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 146. [2023-04-02 06:24:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 139 states have (on average 1.20863309352518) internal successors, (168), 142 states have internal predecessors, (168), 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) [2023-04-02 06:24:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2023-04-02 06:24:53,140 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2023-04-02 06:24:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:53,140 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2023-04-02 06:24:53,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2023-04-02 06:24:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:24:53,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:53,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:53,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:24:53,141 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:53,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:53,142 INFO L85 PathProgramCache]: Analyzing trace with hash 367827498, now seen corresponding path program 1 times [2023-04-02 06:24:53,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:53,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837722125] [2023-04-02 06:24:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:53,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837722125] [2023-04-02 06:24:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837722125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:53,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:53,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:24:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042054015] [2023-04-02 06:24:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:53,695 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:55,204 INFO L93 Difference]: Finished difference Result 308 states and 389 transitions. [2023-04-02 06:24:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:24:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-02 06:24:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:55,206 INFO L225 Difference]: With dead ends: 308 [2023-04-02 06:24:55,206 INFO L226 Difference]: Without dead ends: 302 [2023-04-02 06:24:55,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:24:55,207 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 736 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:55,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1501 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:24:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-04-02 06:24:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 140. [2023-04-02 06:24:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.208955223880597) internal successors, (162), 136 states have internal predecessors, (162), 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) [2023-04-02 06:24:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-04-02 06:24:55,250 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 59 [2023-04-02 06:24:55,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:55,250 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-04-02 06:24:55,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-04-02 06:24:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:24:55,251 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:55,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:24:55,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:24:55,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:55,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1345343886, now seen corresponding path program 1 times [2023-04-02 06:24:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:55,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403382295] [2023-04-02 06:24:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403382295] [2023-04-02 06:24:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403382295] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:24:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560272986] [2023-04-02 06:24:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:24:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:24:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:24:56,121 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:24:58,197 INFO L93 Difference]: Finished difference Result 353 states and 434 transitions. [2023-04-02 06:24:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:24:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-02 06:24:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:24:58,199 INFO L225 Difference]: With dead ends: 353 [2023-04-02 06:24:58,199 INFO L226 Difference]: Without dead ends: 345 [2023-04-02 06:24:58,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:24:58,200 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1050 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:24:58,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2590 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:24:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-04-02 06:24:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 149. [2023-04-02 06:24:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 143 states have (on average 1.2097902097902098) internal successors, (173), 145 states have internal predecessors, (173), 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) [2023-04-02 06:24:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2023-04-02 06:24:58,248 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2023-04-02 06:24:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:24:58,248 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2023-04-02 06:24:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:24:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2023-04-02 06:24:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:24:58,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:24:58,249 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] [2023-04-02 06:24:58,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:24:58,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:24:58,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:24:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2126187847, now seen corresponding path program 1 times [2023-04-02 06:24:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:24:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731199674] [2023-04-02 06:24:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:24:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:24:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:24:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:24:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:24:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:24:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731199674] [2023-04-02 06:24:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731199674] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:24:58,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:24:58,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:24:58,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365819424] [2023-04-02 06:24:58,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:24:58,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:24:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:24:58,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:24:58,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:24:58,806 INFO L87 Difference]: Start difference. First operand 149 states and 176 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) [2023-04-02 06:25:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:00,330 INFO L93 Difference]: Finished difference Result 314 states and 401 transitions. [2023-04-02 06:25:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:25:00,330 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 [2023-04-02 06:25:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:00,331 INFO L225 Difference]: With dead ends: 314 [2023-04-02 06:25:00,331 INFO L226 Difference]: Without dead ends: 299 [2023-04-02 06:25:00,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:25:00,332 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 694 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:00,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1519 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:25:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-04-02 06:25:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 128. [2023-04-02 06:25:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.2113821138211383) internal successors, (149), 124 states have internal predecessors, (149), 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) [2023-04-02 06:25:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2023-04-02 06:25:00,367 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 60 [2023-04-02 06:25:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:00,368 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2023-04-02 06:25:00,368 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) [2023-04-02 06:25:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2023-04-02 06:25:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:25:00,368 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:00,368 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] [2023-04-02 06:25:00,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:25:00,369 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:00,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -863294807, now seen corresponding path program 1 times [2023-04-02 06:25:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067335408] [2023-04-02 06:25:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:01,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067335408] [2023-04-02 06:25:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067335408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 06:25:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105096716] [2023-04-02 06:25:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:01,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 06:25:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 06:25:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:25:01,114 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 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) [2023-04-02 06:25:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:02,710 INFO L93 Difference]: Finished difference Result 255 states and 316 transitions. [2023-04-02 06:25:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:25:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 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 [2023-04-02 06:25:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:02,712 INFO L225 Difference]: With dead ends: 255 [2023-04-02 06:25:02,712 INFO L226 Difference]: Without dead ends: 241 [2023-04-02 06:25:02,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:25:02,714 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 783 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:02,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1249 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:25:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-04-02 06:25:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 123. [2023-04-02 06:25:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 119 states have internal predecessors, (143), 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) [2023-04-02 06:25:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2023-04-02 06:25:02,757 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 60 [2023-04-02 06:25:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:02,757 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2023-04-02 06:25:02,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 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) [2023-04-02 06:25:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2023-04-02 06:25:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:25:02,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:02,760 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] [2023-04-02 06:25:02,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:25:02,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:02,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:02,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1839134274, now seen corresponding path program 1 times [2023-04-02 06:25:02,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:02,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760551878] [2023-04-02 06:25:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:02,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760551878] [2023-04-02 06:25:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760551878] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:03,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 06:25:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437959234] [2023-04-02 06:25:03,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:03,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 06:25:03,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 06:25:03,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:25:03,665 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 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) [2023-04-02 06:25:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:05,295 INFO L93 Difference]: Finished difference Result 241 states and 302 transitions. [2023-04-02 06:25:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 06:25:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 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 [2023-04-02 06:25:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:05,296 INFO L225 Difference]: With dead ends: 241 [2023-04-02 06:25:05,296 INFO L226 Difference]: Without dead ends: 233 [2023-04-02 06:25:05,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 06:25:05,297 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 672 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:05,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1444 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:25:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-04-02 06:25:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 123. [2023-04-02 06:25:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 119 states have internal predecessors, (142), 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) [2023-04-02 06:25:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2023-04-02 06:25:05,335 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 60 [2023-04-02 06:25:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:05,335 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2023-04-02 06:25:05,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 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) [2023-04-02 06:25:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2023-04-02 06:25:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:25:05,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:05,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:25:05,336 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:05,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 946552069, now seen corresponding path program 1 times [2023-04-02 06:25:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020545143] [2023-04-02 06:25:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:06,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020545143] [2023-04-02 06:25:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020545143] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:06,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:06,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:25:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373346646] [2023-04-02 06:25:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:25:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:25:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:25:06,050 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:25:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:07,938 INFO L93 Difference]: Finished difference Result 288 states and 369 transitions. [2023-04-02 06:25:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:25:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-04-02 06:25:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:07,939 INFO L225 Difference]: With dead ends: 288 [2023-04-02 06:25:07,939 INFO L226 Difference]: Without dead ends: 270 [2023-04-02 06:25:07,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 06:25:07,940 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 634 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 2216 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:25:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-04-02 06:25:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 105. [2023-04-02 06:25:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 101 states have internal predecessors, (124), 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) [2023-04-02 06:25:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2023-04-02 06:25:07,988 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 61 [2023-04-02 06:25:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:07,989 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-04-02 06:25:07,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:25:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2023-04-02 06:25:07,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:25:07,990 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:07,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:07,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:25:07,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:07,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1755484625, now seen corresponding path program 1 times [2023-04-02 06:25:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941178995] [2023-04-02 06:25:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941178995] [2023-04-02 06:25:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941178995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:25:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756997927] [2023-04-02 06:25:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:25:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:25:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:25:08,208 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-04-02 06:25:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:08,789 INFO L93 Difference]: Finished difference Result 357 states and 487 transitions. [2023-04-02 06:25:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:25:08,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 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 77 [2023-04-02 06:25:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:08,791 INFO L225 Difference]: With dead ends: 357 [2023-04-02 06:25:08,791 INFO L226 Difference]: Without dead ends: 315 [2023-04-02 06:25:08,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:25:08,792 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 465 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:08,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 595 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-04-02 06:25:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 145. [2023-04-02 06:25:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.2907801418439717) internal successors, (182), 141 states have internal predecessors, (182), 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) [2023-04-02 06:25:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 185 transitions. [2023-04-02 06:25:08,857 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 185 transitions. Word has length 77 [2023-04-02 06:25:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:08,857 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 185 transitions. [2023-04-02 06:25:08,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-04-02 06:25:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 185 transitions. [2023-04-02 06:25:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:25:08,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:08,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:08,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:25:08,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:08,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -765407760, now seen corresponding path program 1 times [2023-04-02 06:25:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039587537] [2023-04-02 06:25:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:09,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039587537] [2023-04-02 06:25:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039587537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:09,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:25:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180222518] [2023-04-02 06:25:09,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:09,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:25:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:25:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:25:09,090 INFO L87 Difference]: Start difference. First operand 145 states and 185 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:09,718 INFO L93 Difference]: Finished difference Result 433 states and 598 transitions. [2023-04-02 06:25:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:25:09,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:25:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:09,722 INFO L225 Difference]: With dead ends: 433 [2023-04-02 06:25:09,722 INFO L226 Difference]: Without dead ends: 351 [2023-04-02 06:25:09,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:25:09,723 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:09,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 435 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:25:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-04-02 06:25:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 185. [2023-04-02 06:25:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 181 states have (on average 1.3259668508287292) internal successors, (240), 181 states have internal predecessors, (240), 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) [2023-04-02 06:25:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2023-04-02 06:25:09,822 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 79 [2023-04-02 06:25:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:09,822 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2023-04-02 06:25:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2023-04-02 06:25:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:25:09,823 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:09,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:25:09,824 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:09,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1313810588, now seen corresponding path program 1 times [2023-04-02 06:25:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590679113] [2023-04-02 06:25:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:10,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590679113] [2023-04-02 06:25:10,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590679113] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:10,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:10,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:25:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070687281] [2023-04-02 06:25:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:25:10,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:25:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:25:10,037 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:10,633 INFO L93 Difference]: Finished difference Result 473 states and 656 transitions. [2023-04-02 06:25:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:25:10,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:25:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:10,635 INFO L225 Difference]: With dead ends: 473 [2023-04-02 06:25:10,635 INFO L226 Difference]: Without dead ends: 391 [2023-04-02 06:25:10,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:25:10,636 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 280 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:10,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 429 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:25:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-04-02 06:25:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 265. [2023-04-02 06:25:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.3639846743295019) internal successors, (356), 261 states have internal predecessors, (356), 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) [2023-04-02 06:25:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 359 transitions. [2023-04-02 06:25:10,790 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 359 transitions. Word has length 79 [2023-04-02 06:25:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:10,791 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 359 transitions. [2023-04-02 06:25:10,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 359 transitions. [2023-04-02 06:25:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:25:10,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:10,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:10,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:25:10,792 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:10,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1335154477, now seen corresponding path program 1 times [2023-04-02 06:25:10,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175192485] [2023-04-02 06:25:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:11,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175192485] [2023-04-02 06:25:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175192485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:11,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:11,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:25:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71105647] [2023-04-02 06:25:11,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:11,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:25:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:25:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:25:11,050 INFO L87 Difference]: Start difference. First operand 265 states and 359 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:11,588 INFO L93 Difference]: Finished difference Result 549 states and 768 transitions. [2023-04-02 06:25:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:25:11,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:25:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:11,590 INFO L225 Difference]: With dead ends: 549 [2023-04-02 06:25:11,590 INFO L226 Difference]: Without dead ends: 347 [2023-04-02 06:25:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:25:11,591 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 104 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 239 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-04-02 06:25:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-04-02 06:25:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 341 states have (on average 1.3724340175953078) internal successors, (468), 341 states have internal predecessors, (468), 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) [2023-04-02 06:25:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 471 transitions. [2023-04-02 06:25:11,795 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 471 transitions. Word has length 79 [2023-04-02 06:25:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:11,795 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 471 transitions. [2023-04-02 06:25:11,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 471 transitions. [2023-04-02 06:25:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:25:11,796 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:11,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:25:11,796 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:11,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2074894798, now seen corresponding path program 1 times [2023-04-02 06:25:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736916034] [2023-04-02 06:25:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:11,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:11,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736916034] [2023-04-02 06:25:11,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736916034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:11,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:11,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:25:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043859463] [2023-04-02 06:25:11,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:11,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:25:11,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:25:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:25:11,948 INFO L87 Difference]: Start difference. First operand 345 states and 471 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-04-02 06:25:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:12,280 INFO L93 Difference]: Finished difference Result 631 states and 879 transitions. [2023-04-02 06:25:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:25:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 79 [2023-04-02 06:25:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:12,282 INFO L225 Difference]: With dead ends: 631 [2023-04-02 06:25:12,282 INFO L226 Difference]: Without dead ends: 342 [2023-04-02 06:25:12,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:25:12,283 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:12,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 06:25:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-04-02 06:25:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-04-02 06:25:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 338 states have (on average 1.3550295857988166) internal successors, (458), 338 states have internal predecessors, (458), 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) [2023-04-02 06:25:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 461 transitions. [2023-04-02 06:25:12,534 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 461 transitions. Word has length 79 [2023-04-02 06:25:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:12,535 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 461 transitions. [2023-04-02 06:25:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-04-02 06:25:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 461 transitions. [2023-04-02 06:25:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:25:12,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:12,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:25:12,542 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:12,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2045075862, now seen corresponding path program 1 times [2023-04-02 06:25:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449851780] [2023-04-02 06:25:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449851780] [2023-04-02 06:25:12,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449851780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:12,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:12,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:25:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930499441] [2023-04-02 06:25:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:12,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:25:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:25:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:25:12,746 INFO L87 Difference]: Start difference. First operand 342 states and 461 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:13,382 INFO L93 Difference]: Finished difference Result 587 states and 804 transitions. [2023-04-02 06:25:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:25:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:25:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:13,384 INFO L225 Difference]: With dead ends: 587 [2023-04-02 06:25:13,384 INFO L226 Difference]: Without dead ends: 506 [2023-04-02 06:25:13,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:25:13,385 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 270 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:13,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 455 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:13,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-04-02 06:25:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 421. [2023-04-02 06:25:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 417 states have (on average 1.3669064748201438) internal successors, (570), 417 states have internal predecessors, (570), 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) [2023-04-02 06:25:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 573 transitions. [2023-04-02 06:25:13,630 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 573 transitions. Word has length 79 [2023-04-02 06:25:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:13,630 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 573 transitions. [2023-04-02 06:25:13,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-04-02 06:25:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 573 transitions. [2023-04-02 06:25:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:25:13,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:13,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:25:13,631 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:13,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:13,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1500716567, now seen corresponding path program 1 times [2023-04-02 06:25:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:13,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982004750] [2023-04-02 06:25:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:13,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:13,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982004750] [2023-04-02 06:25:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982004750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:13,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:13,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:25:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924648797] [2023-04-02 06:25:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:13,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:25:13,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:25:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:25:13,829 INFO L87 Difference]: Start difference. First operand 421 states and 573 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-04-02 06:25:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:14,555 INFO L93 Difference]: Finished difference Result 1101 states and 1522 transitions. [2023-04-02 06:25:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:25:14,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-02 06:25:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:14,558 INFO L225 Difference]: With dead ends: 1101 [2023-04-02 06:25:14,558 INFO L226 Difference]: Without dead ends: 743 [2023-04-02 06:25:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:25:14,560 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 258 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-04-02 06:25:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 705. [2023-04-02 06:25:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 701 states have (on average 1.3666191155492153) internal successors, (958), 701 states have internal predecessors, (958), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:25:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 961 transitions. [2023-04-02 06:25:14,958 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 961 transitions. Word has length 80 [2023-04-02 06:25:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:14,958 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 961 transitions. [2023-04-02 06:25:14,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-04-02 06:25:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 961 transitions. [2023-04-02 06:25:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:25:14,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:14,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:25:14,959 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:14,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1650729809, now seen corresponding path program 1 times [2023-04-02 06:25:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497318175] [2023-04-02 06:25:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497318175] [2023-04-02 06:25:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497318175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:25:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130595365] [2023-04-02 06:25:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:25:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:25:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:25:15,187 INFO L87 Difference]: Start difference. First operand 705 states and 961 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-04-02 06:25:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:16,241 INFO L93 Difference]: Finished difference Result 1917 states and 2623 transitions. [2023-04-02 06:25:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:25:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-02 06:25:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:16,245 INFO L225 Difference]: With dead ends: 1917 [2023-04-02 06:25:16,245 INFO L226 Difference]: Without dead ends: 1275 [2023-04-02 06:25:16,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:25:16,247 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:16,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-04-02 06:25:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1201. [2023-04-02 06:25:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1197 states have (on average 1.3508771929824561) internal successors, (1617), 1197 states have internal predecessors, (1617), 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) [2023-04-02 06:25:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1620 transitions. [2023-04-02 06:25:16,957 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1620 transitions. Word has length 81 [2023-04-02 06:25:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:16,957 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1620 transitions. [2023-04-02 06:25:16,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-04-02 06:25:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1620 transitions. [2023-04-02 06:25:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:25:16,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:16,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:16,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:25:16,958 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:16,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1113382500, now seen corresponding path program 1 times [2023-04-02 06:25:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024780960] [2023-04-02 06:25:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:17,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:17,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024780960] [2023-04-02 06:25:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024780960] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:25:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463939840] [2023-04-02 06:25:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:17,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:25:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:25:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:25:17,167 INFO L87 Difference]: Start difference. First operand 1201 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-04-02 06:25:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:18,820 INFO L93 Difference]: Finished difference Result 3333 states and 4474 transitions. [2023-04-02 06:25:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:25:18,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 82 [2023-04-02 06:25:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:18,826 INFO L225 Difference]: With dead ends: 3333 [2023-04-02 06:25:18,826 INFO L226 Difference]: Without dead ends: 2195 [2023-04-02 06:25:18,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:25:18,828 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 41 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:18,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2023-04-02 06:25:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2049. [2023-04-02 06:25:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2045 states have (on average 1.3207823960880196) internal successors, (2701), 2045 states have internal predecessors, (2701), 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) [2023-04-02 06:25:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2704 transitions. [2023-04-02 06:25:20,196 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2704 transitions. Word has length 82 [2023-04-02 06:25:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:20,196 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 2704 transitions. [2023-04-02 06:25:20,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-04-02 06:25:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2704 transitions. [2023-04-02 06:25:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:25:20,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:20,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:20,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:25:20,197 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:20,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash 292032224, now seen corresponding path program 1 times [2023-04-02 06:25:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:20,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931681858] [2023-04-02 06:25:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931681858] [2023-04-02 06:25:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931681858] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:25:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:25:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:25:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862006787] [2023-04-02 06:25:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:25:20,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:25:20,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:20,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:25:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:25:20,539 INFO L87 Difference]: Start difference. First operand 2049 states and 2704 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 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) [2023-04-02 06:25:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:25:22,415 INFO L93 Difference]: Finished difference Result 2438 states and 3176 transitions. [2023-04-02 06:25:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:25:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 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 83 [2023-04-02 06:25:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:25:22,422 INFO L225 Difference]: With dead ends: 2438 [2023-04-02 06:25:22,422 INFO L226 Difference]: Without dead ends: 2436 [2023-04-02 06:25:22,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:25:22,423 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 193 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:25:22,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 618 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:25:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2023-04-02 06:25:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2049. [2023-04-02 06:25:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2045 states have (on average 1.3012224938875305) internal successors, (2661), 2045 states have internal predecessors, (2661), 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) [2023-04-02 06:25:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2664 transitions. [2023-04-02 06:25:23,842 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2664 transitions. Word has length 83 [2023-04-02 06:25:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:25:23,842 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 2664 transitions. [2023-04-02 06:25:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 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) [2023-04-02 06:25:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2664 transitions. [2023-04-02 06:25:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:25:23,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:25:23,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:25:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:25:23,844 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:25:23,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:25:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash 434202636, now seen corresponding path program 1 times [2023-04-02 06:25:23,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:25:23,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350436817] [2023-04-02 06:25:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:23,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:25:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:25:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:24,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:25:24,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350436817] [2023-04-02 06:25:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350436817] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:25:24,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508494431] [2023-04-02 06:25:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:25:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:25:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:25:24,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:25:24,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 06:25:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:25:24,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 06:25:24,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:25:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:25,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:25:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:25:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508494431] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:25:26,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:25:26,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 30 [2023-04-02 06:25:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086773912] [2023-04-02 06:25:26,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:25:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-02 06:25:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:25:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-02 06:25:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:25:26,355 INFO L87 Difference]: Start difference. First operand 2049 states and 2664 transitions. Second operand has 30 states, 30 states have (on average 9.166666666666666) internal successors, (275), 29 states have internal predecessors, (275), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 06:26:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:26:51,139 INFO L93 Difference]: Finished difference Result 50886 states and 63760 transitions. [2023-04-02 06:26:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 538 states. [2023-04-02 06:26:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.166666666666666) internal successors, (275), 29 states have internal predecessors, (275), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-04-02 06:26:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:26:51,284 INFO L225 Difference]: With dead ends: 50886 [2023-04-02 06:26:51,284 INFO L226 Difference]: Without dead ends: 48900 [2023-04-02 06:26:51,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 563 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149326 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=35540, Invalid=283120, Unknown=0, NotChecked=0, Total=318660 [2023-04-02 06:26:51,349 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 11871 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 5483 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11871 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 5483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:26:51,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11871 Valid, 3747 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 5483 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:26:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48900 states. [2023-04-02 06:26:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48900 to 10394. [2023-04-02 06:26:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10394 states, 10390 states have (on average 1.2865255052935516) internal successors, (13367), 10390 states have internal predecessors, (13367), 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) [2023-04-02 06:26:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10394 states to 10394 states and 13370 transitions. [2023-04-02 06:26:59,584 INFO L78 Accepts]: Start accepts. Automaton has 10394 states and 13370 transitions. Word has length 106 [2023-04-02 06:26:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:26:59,584 INFO L495 AbstractCegarLoop]: Abstraction has 10394 states and 13370 transitions. [2023-04-02 06:26:59,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.166666666666666) internal successors, (275), 29 states have internal predecessors, (275), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 06:26:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 10394 states and 13370 transitions. [2023-04-02 06:26:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 06:26:59,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:26:59,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:26:59,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 06:26:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:26:59,793 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:26:59,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:26:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1600194409, now seen corresponding path program 1 times [2023-04-02 06:26:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:26:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941673168] [2023-04-02 06:26:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:26:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:26:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:00,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:27:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:00,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:27:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941673168] [2023-04-02 06:27:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941673168] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:27:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511142303] [2023-04-02 06:27:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:27:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:27:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:27:00,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:27:00,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 06:27:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:27:00,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 06:27:00,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:27:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:01,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:27:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:27:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511142303] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:27:01,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:27:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-04-02 06:27:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591517642] [2023-04-02 06:27:01,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:27:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 06:27:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:27:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 06:27:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:27:01,676 INFO L87 Difference]: Start difference. First operand 10394 states and 13370 transitions. Second operand has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 27 states have internal predecessors, (278), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 06:28:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:07,480 INFO L93 Difference]: Finished difference Result 64782 states and 81648 transitions. [2023-04-02 06:28:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-04-02 06:28:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 27 states have internal predecessors, (278), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2023-04-02 06:28:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:07,601 INFO L225 Difference]: With dead ends: 64782 [2023-04-02 06:28:07,601 INFO L226 Difference]: Without dead ends: 54477 [2023-04-02 06:28:07,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37454 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=12535, Invalid=75377, Unknown=0, NotChecked=0, Total=87912 [2023-04-02 06:28:07,642 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 8807 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8807 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:07,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8807 Valid, 2841 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 06:28:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54477 states.