/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:59:52,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:59:52,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:59:52,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:59:52,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:59:52,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:59:52,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:59:52,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:59:52,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:59:52,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:59:52,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:59:52,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:59:52,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:59:52,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:59:52,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:59:52,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:59:52,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:59:52,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:59:52,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:59:52,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:59:52,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:59:52,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:59:52,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:59:52,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:59:52,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:59:52,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:59:52,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:59:52,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:59:52,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:59:52,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:59:52,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:59:52,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:59:52,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:59:52,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:59:52,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:59:52,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:59:52,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:59:52,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:59:52,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:59:52,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:59:52,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:59:52,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:59:52,685 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:59:52,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:59:52,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:59:52,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:59:52,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:59:52,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:59:52,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:59:52,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:59:52,687 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:59:52,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:59:52,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:59:52,692 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:59:52,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:59:52,692 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:59:52,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:59:52,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:59:52,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:59:52,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:59:52,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:59:52,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:59:52,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:59:52,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:59:52,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:59:52,695 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:59:52,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:59:52,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:59:52,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:59:52,941 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:59:52,942 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:59:52,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:59:54,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:59:54,382 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:59:54,382 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:59:54,399 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e610cc7bb/67e494b191fe49cdb8805dfa09128a3c/FLAG49b9ca8cd [2023-03-31 01:59:54,412 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e610cc7bb/67e494b191fe49cdb8805dfa09128a3c [2023-03-31 01:59:54,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:59:54,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:59:54,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:59:54,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:59:54,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:59:54,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:59:54" (1/1) ... [2023-03-31 01:59:54,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e3cf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:54, skipping insertion in model container [2023-03-31 01:59:54,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:59:54" (1/1) ... [2023-03-31 01:59:54,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:59:54,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:59:54,802 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2023-03-31 01:59:54,816 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2023-03-31 01:59:54,910 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2023-03-31 01:59:54,927 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2023-03-31 01:59:54,954 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2023-03-31 01:59:55,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:59:55,022 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:59:55,208 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2023-03-31 01:59:55,218 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2023-03-31 01:59:55,286 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2023-03-31 01:59:55,292 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2023-03-31 01:59:55,300 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2023-03-31 01:59:55,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:59:55,340 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:59:55,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55 WrapperNode [2023-03-31 01:59:55,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:59:55,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:59:55,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:59:55,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:59:55,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:59:55,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:59:55,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:59:55,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:59:55,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (1/1) ... [2023-03-31 01:59:55,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:59:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:59:55,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:59:55,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:59:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:59:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:59:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:59:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:59:55,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:59:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:59:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:59:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:59:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:59:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:59:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:59:55,781 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:59:55,783 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:59:56,952 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:59:56,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:59:56,968 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:59:56,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:59:56 BoogieIcfgContainer [2023-03-31 01:59:56,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:59:56,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:59:56,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:59:56,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:59:56,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:59:54" (1/3) ... [2023-03-31 01:59:56,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ad76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:59:56, skipping insertion in model container [2023-03-31 01:59:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:55" (2/3) ... [2023-03-31 01:59:56,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430ad76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:59:56, skipping insertion in model container [2023-03-31 01:59:56,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:59:56" (3/3) ... [2023-03-31 01:59:56,979 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:59:56,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:59:56,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-03-31 01:59:57,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:59:57,065 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;@502da6e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:59:57,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-03-31 01:59:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 419 states have (on average 1.801909307875895) internal successors, (755), 430 states have internal predecessors, (755), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:59:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:59:57,104 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:57,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:59:57,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 01:59:57,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1675911568, now seen corresponding path program 1 times [2023-03-31 01:59:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:57,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245882667] [2023-03-31 01:59:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:59:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245882667] [2023-03-31 01:59:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245882667] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645267126] [2023-03-31 01:59:58,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:58,102 INFO L87 Difference]: Start difference. First operand has 435 states, 419 states have (on average 1.801909307875895) internal successors, (755), 430 states have internal predecessors, (755), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:00,240 INFO L93 Difference]: Finished difference Result 792 states and 1348 transitions. [2023-03-31 02:00:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 154 [2023-03-31 02:00:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:00,256 INFO L225 Difference]: With dead ends: 792 [2023-03-31 02:00:00,256 INFO L226 Difference]: Without dead ends: 614 [2023-03-31 02:00:00,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:00,263 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 478 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:00,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1191 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 02:00:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-03-31 02:00:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 612. [2023-03-31 02:00:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 604 states have (on average 1.4569536423841059) internal successors, (880), 608 states have internal predecessors, (880), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 883 transitions. [2023-03-31 02:00:00,337 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 883 transitions. Word has length 154 [2023-03-31 02:00:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:00,338 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 883 transitions. [2023-03-31 02:00:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 883 transitions. [2023-03-31 02:00:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 02:00:00,342 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:00,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:00,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:00:00,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:00,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 303261172, now seen corresponding path program 1 times [2023-03-31 02:00:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:00,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269830674] [2023-03-31 02:00:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269830674] [2023-03-31 02:00:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269830674] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456124886] [2023-03-31 02:00:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:01,001 INFO L87 Difference]: Start difference. First operand 612 states and 883 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:03,167 INFO L93 Difference]: Finished difference Result 1782 states and 2564 transitions. [2023-03-31 02:00:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 154 [2023-03-31 02:00:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:03,173 INFO L225 Difference]: With dead ends: 1782 [2023-03-31 02:00:03,174 INFO L226 Difference]: Without dead ends: 1183 [2023-03-31 02:00:03,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:03,182 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1191 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:03,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 1604 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 02:00:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-03-31 02:00:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1156. [2023-03-31 02:00:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1148 states have (on average 1.4433797909407666) internal successors, (1657), 1152 states have internal predecessors, (1657), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1660 transitions. [2023-03-31 02:00:03,277 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1660 transitions. Word has length 154 [2023-03-31 02:00:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:03,278 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1660 transitions. [2023-03-31 02:00:03,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1660 transitions. [2023-03-31 02:00:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-03-31 02:00:03,288 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:03,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:00:03,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:03,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash 619996832, now seen corresponding path program 1 times [2023-03-31 02:00:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28252993] [2023-03-31 02:00:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:03,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:03,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28252993] [2023-03-31 02:00:03,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28252993] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:03,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:03,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695691613] [2023-03-31 02:00:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:03,588 INFO L87 Difference]: Start difference. First operand 1156 states and 1660 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:05,076 INFO L93 Difference]: Finished difference Result 3422 states and 4910 transitions. [2023-03-31 02:00:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 155 [2023-03-31 02:00:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:05,087 INFO L225 Difference]: With dead ends: 3422 [2023-03-31 02:00:05,087 INFO L226 Difference]: Without dead ends: 2298 [2023-03-31 02:00:05,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:05,092 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 586 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:05,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1348 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:00:05,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-03-31 02:00:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1158. [2023-03-31 02:00:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1150 states have (on average 1.442608695652174) internal successors, (1659), 1154 states have internal predecessors, (1659), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:05,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1662 transitions. [2023-03-31 02:00:05,194 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1662 transitions. Word has length 155 [2023-03-31 02:00:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:05,194 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1662 transitions. [2023-03-31 02:00:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1662 transitions. [2023-03-31 02:00:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-31 02:00:05,199 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:05,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:00:05,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:05,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1722353909, now seen corresponding path program 1 times [2023-03-31 02:00:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457331674] [2023-03-31 02:00:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457331674] [2023-03-31 02:00:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457331674] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:05,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:05,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232008509] [2023-03-31 02:00:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:05,833 INFO L87 Difference]: Start difference. First operand 1158 states and 1662 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:08,082 INFO L93 Difference]: Finished difference Result 3348 states and 4782 transitions. [2023-03-31 02:00:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 156 [2023-03-31 02:00:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:08,094 INFO L225 Difference]: With dead ends: 3348 [2023-03-31 02:00:08,094 INFO L226 Difference]: Without dead ends: 2224 [2023-03-31 02:00:08,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:08,097 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 1182 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:08,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1590 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 02:00:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2023-03-31 02:00:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2197. [2023-03-31 02:00:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2189 states have (on average 1.4248515303791687) internal successors, (3119), 2193 states have internal predecessors, (3119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3122 transitions. [2023-03-31 02:00:08,271 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3122 transitions. Word has length 156 [2023-03-31 02:00:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:08,272 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 3122 transitions. [2023-03-31 02:00:08,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3122 transitions. [2023-03-31 02:00:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 02:00:08,275 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:08,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:08,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:00:08,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:08,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:08,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1436599551, now seen corresponding path program 1 times [2023-03-31 02:00:08,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:08,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817197777] [2023-03-31 02:00:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:08,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817197777] [2023-03-31 02:00:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817197777] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142648592] [2023-03-31 02:00:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:08,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:08,628 INFO L87 Difference]: Start difference. First operand 2197 states and 3122 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:10,997 INFO L93 Difference]: Finished difference Result 6507 states and 9238 transitions. [2023-03-31 02:00:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 157 [2023-03-31 02:00:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:11,014 INFO L225 Difference]: With dead ends: 6507 [2023-03-31 02:00:11,014 INFO L226 Difference]: Without dead ends: 4358 [2023-03-31 02:00:11,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:11,018 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 572 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:11,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1761 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 02:00:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2023-03-31 02:00:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 2201. [2023-03-31 02:00:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2193 states have (on average 1.424076607387141) internal successors, (3123), 2197 states have internal predecessors, (3123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3126 transitions. [2023-03-31 02:00:11,211 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3126 transitions. Word has length 157 [2023-03-31 02:00:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:11,211 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3126 transitions. [2023-03-31 02:00:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3126 transitions. [2023-03-31 02:00:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 02:00:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:11,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:00:11,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:11,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1061551464, now seen corresponding path program 1 times [2023-03-31 02:00:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210478697] [2023-03-31 02:00:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210478697] [2023-03-31 02:00:11,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210478697] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:11,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:11,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:11,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538478286] [2023-03-31 02:00:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:11,530 INFO L87 Difference]: Start difference. First operand 2201 states and 3126 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:13,437 INFO L93 Difference]: Finished difference Result 5738 states and 8141 transitions. [2023-03-31 02:00:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 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 158 [2023-03-31 02:00:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:13,451 INFO L225 Difference]: With dead ends: 5738 [2023-03-31 02:00:13,452 INFO L226 Difference]: Without dead ends: 3873 [2023-03-31 02:00:13,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:13,460 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 513 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:13,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1619 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 02:00:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2023-03-31 02:00:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3846. [2023-03-31 02:00:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3838 states have (on average 1.402813965607087) internal successors, (5384), 3842 states have internal predecessors, (5384), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5387 transitions. [2023-03-31 02:00:13,750 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5387 transitions. Word has length 158 [2023-03-31 02:00:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:13,751 INFO L495 AbstractCegarLoop]: Abstraction has 3846 states and 5387 transitions. [2023-03-31 02:00:13,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5387 transitions. [2023-03-31 02:00:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 02:00:13,757 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:13,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:13,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:00:13,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:13,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash -554120139, now seen corresponding path program 1 times [2023-03-31 02:00:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365259915] [2023-03-31 02:00:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:14,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:14,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365259915] [2023-03-31 02:00:14,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365259915] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:14,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:14,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:00:14,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555623418] [2023-03-31 02:00:14,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:00:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:00:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:14,336 INFO L87 Difference]: Start difference. First operand 3846 states and 5387 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:16,381 INFO L93 Difference]: Finished difference Result 10955 states and 15312 transitions. [2023-03-31 02:00:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 158 [2023-03-31 02:00:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:16,408 INFO L225 Difference]: With dead ends: 10955 [2023-03-31 02:00:16,408 INFO L226 Difference]: Without dead ends: 7150 [2023-03-31 02:00:16,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:16,417 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 1734 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:16,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 1555 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 02:00:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7150 states. [2023-03-31 02:00:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7150 to 7129. [2023-03-31 02:00:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 7121 states have (on average 1.3863221457660442) internal successors, (9872), 7125 states have internal predecessors, (9872), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 9875 transitions. [2023-03-31 02:00:17,085 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 9875 transitions. Word has length 158 [2023-03-31 02:00:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:17,085 INFO L495 AbstractCegarLoop]: Abstraction has 7129 states and 9875 transitions. [2023-03-31 02:00:17,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 9875 transitions. [2023-03-31 02:00:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 02:00:17,095 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:17,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:17,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:00:17,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:17,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -933437322, now seen corresponding path program 1 times [2023-03-31 02:00:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950799544] [2023-03-31 02:00:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:17,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:17,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950799544] [2023-03-31 02:00:17,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950799544] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:17,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:17,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542899066] [2023-03-31 02:00:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:17,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:17,611 INFO L87 Difference]: Start difference. First operand 7129 states and 9875 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:19,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:19,516 INFO L93 Difference]: Finished difference Result 14546 states and 20061 transitions. [2023-03-31 02:00:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:19,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 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 158 [2023-03-31 02:00:19,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:19,550 INFO L225 Difference]: With dead ends: 14546 [2023-03-31 02:00:19,551 INFO L226 Difference]: Without dead ends: 7538 [2023-03-31 02:00:19,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:19,567 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1272 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:19,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1475 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 02:00:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2023-03-31 02:00:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7353. [2023-03-31 02:00:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7353 states, 7345 states have (on average 1.378352620830497) internal successors, (10124), 7349 states have internal predecessors, (10124), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 10127 transitions. [2023-03-31 02:00:20,286 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 10127 transitions. Word has length 158 [2023-03-31 02:00:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:20,287 INFO L495 AbstractCegarLoop]: Abstraction has 7353 states and 10127 transitions. [2023-03-31 02:00:20,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 10127 transitions. [2023-03-31 02:00:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 02:00:20,298 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:20,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 02:00:20,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:20,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1175624674, now seen corresponding path program 1 times [2023-03-31 02:00:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429615443] [2023-03-31 02:00:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429615443] [2023-03-31 02:00:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429615443] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:20,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:20,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335240250] [2023-03-31 02:00:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:20,682 INFO L87 Difference]: Start difference. First operand 7353 states and 10127 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:22,778 INFO L93 Difference]: Finished difference Result 21325 states and 29439 transitions. [2023-03-31 02:00:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 159 [2023-03-31 02:00:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:22,817 INFO L225 Difference]: With dead ends: 21325 [2023-03-31 02:00:22,818 INFO L226 Difference]: Without dead ends: 14577 [2023-03-31 02:00:22,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:22,834 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 558 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:22,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1407 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:00:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14577 states. [2023-03-31 02:00:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14577 to 7369. [2023-03-31 02:00:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7361 states have (on average 1.377530226871349) internal successors, (10140), 7365 states have internal predecessors, (10140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 10143 transitions. [2023-03-31 02:00:23,572 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 10143 transitions. Word has length 159 [2023-03-31 02:00:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 7369 states and 10143 transitions. [2023-03-31 02:00:23,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 10143 transitions. [2023-03-31 02:00:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-31 02:00:23,589 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:23,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 02:00:23,589 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:23,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash -245224329, now seen corresponding path program 1 times [2023-03-31 02:00:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731821741] [2023-03-31 02:00:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731821741] [2023-03-31 02:00:24,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731821741] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:24,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:24,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:24,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623668841] [2023-03-31 02:00:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:24,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:24,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:24,108 INFO L87 Difference]: Start difference. First operand 7369 states and 10143 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:25,677 INFO L93 Difference]: Finished difference Result 14724 states and 20268 transitions. [2023-03-31 02:00:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 160 [2023-03-31 02:00:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:25,692 INFO L225 Difference]: With dead ends: 14724 [2023-03-31 02:00:25,693 INFO L226 Difference]: Without dead ends: 7367 [2023-03-31 02:00:25,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:25,707 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 65 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:25,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1834 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:00:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7367 states. [2023-03-31 02:00:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7367 to 7367. [2023-03-31 02:00:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7359 states have (on average 1.3773610544910992) internal successors, (10136), 7363 states have internal predecessors, (10136), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 10139 transitions. [2023-03-31 02:00:26,412 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 10139 transitions. Word has length 160 [2023-03-31 02:00:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:26,412 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 10139 transitions. [2023-03-31 02:00:26,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 10139 transitions. [2023-03-31 02:00:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-31 02:00:26,421 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:26,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:26,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 02:00:26,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:26,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1016424331, now seen corresponding path program 1 times [2023-03-31 02:00:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427444084] [2023-03-31 02:00:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:26,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:26,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427444084] [2023-03-31 02:00:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427444084] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:26,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113259860] [2023-03-31 02:00:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:26,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:26,760 INFO L87 Difference]: Start difference. First operand 7367 states and 10139 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:29,330 INFO L93 Difference]: Finished difference Result 17103 states and 23595 transitions. [2023-03-31 02:00:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 160 [2023-03-31 02:00:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:29,350 INFO L225 Difference]: With dead ends: 17103 [2023-03-31 02:00:29,351 INFO L226 Difference]: Without dead ends: 10951 [2023-03-31 02:00:29,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:29,362 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 516 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:29,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1674 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-31 02:00:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10951 states. [2023-03-31 02:00:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10951 to 10919. [2023-03-31 02:00:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10919 states, 10911 states have (on average 1.356429291540647) internal successors, (14800), 10915 states have internal predecessors, (14800), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10919 states to 10919 states and 14803 transitions. [2023-03-31 02:00:30,438 INFO L78 Accepts]: Start accepts. Automaton has 10919 states and 14803 transitions. Word has length 160 [2023-03-31 02:00:30,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:30,438 INFO L495 AbstractCegarLoop]: Abstraction has 10919 states and 14803 transitions. [2023-03-31 02:00:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 10919 states and 14803 transitions. [2023-03-31 02:00:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-03-31 02:00:30,451 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:30,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:30,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 02:00:30,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:30,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1836289438, now seen corresponding path program 1 times [2023-03-31 02:00:30,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:30,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207790442] [2023-03-31 02:00:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:30,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:30,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:30,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207790442] [2023-03-31 02:00:30,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207790442] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:30,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:30,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83643963] [2023-03-31 02:00:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:30,712 INFO L87 Difference]: Start difference. First operand 10919 states and 14803 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:33,305 INFO L93 Difference]: Finished difference Result 25309 states and 34974 transitions. [2023-03-31 02:00:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 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 162 [2023-03-31 02:00:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:33,328 INFO L225 Difference]: With dead ends: 25309 [2023-03-31 02:00:33,329 INFO L226 Difference]: Without dead ends: 15592 [2023-03-31 02:00:33,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:33,348 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 307 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:33,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1263 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:00:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15592 states. [2023-03-31 02:00:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15592 to 13665. [2023-03-31 02:00:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13657 states have (on average 1.385223694808523) internal successors, (18918), 13661 states have internal predecessors, (18918), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 18921 transitions. [2023-03-31 02:00:34,645 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 18921 transitions. Word has length 162 [2023-03-31 02:00:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:34,646 INFO L495 AbstractCegarLoop]: Abstraction has 13665 states and 18921 transitions. [2023-03-31 02:00:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 18921 transitions. [2023-03-31 02:00:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-03-31 02:00:34,659 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:34,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 02:00:34,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:34,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1472903923, now seen corresponding path program 1 times [2023-03-31 02:00:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098759697] [2023-03-31 02:00:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:34,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098759697] [2023-03-31 02:00:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098759697] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:34,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:34,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858126476] [2023-03-31 02:00:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:34,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:34,974 INFO L87 Difference]: Start difference. First operand 13665 states and 18921 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:38,140 INFO L93 Difference]: Finished difference Result 30021 states and 42268 transitions. [2023-03-31 02:00:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 164 [2023-03-31 02:00:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:38,167 INFO L225 Difference]: With dead ends: 30021 [2023-03-31 02:00:38,167 INFO L226 Difference]: Without dead ends: 19725 [2023-03-31 02:00:38,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:38,187 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 344 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:38,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1265 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:00:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19725 states. [2023-03-31 02:00:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19725 to 17849. [2023-03-31 02:00:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17849 states, 17841 states have (on average 1.4055265960428227) internal successors, (25076), 17845 states have internal predecessors, (25076), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17849 states to 17849 states and 25079 transitions. [2023-03-31 02:00:40,076 INFO L78 Accepts]: Start accepts. Automaton has 17849 states and 25079 transitions. Word has length 164 [2023-03-31 02:00:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:40,076 INFO L495 AbstractCegarLoop]: Abstraction has 17849 states and 25079 transitions. [2023-03-31 02:00:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17849 states and 25079 transitions. [2023-03-31 02:00:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-03-31 02:00:40,091 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:40,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:40,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 02:00:40,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:40,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1320279712, now seen corresponding path program 1 times [2023-03-31 02:00:40,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330159503] [2023-03-31 02:00:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330159503] [2023-03-31 02:00:40,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330159503] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:40,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:40,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:40,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62366143] [2023-03-31 02:00:40,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:00:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:00:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:40,530 INFO L87 Difference]: Start difference. First operand 17849 states and 25079 transitions. Second operand has 6 states, 5 states have (on average 32.4) internal successors, (162), 4 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) [2023-03-31 02:00:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:43,701 INFO L93 Difference]: Finished difference Result 34544 states and 48844 transitions. [2023-03-31 02:00:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 02:00:43,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 4 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) Word has length 165 [2023-03-31 02:00:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:43,727 INFO L225 Difference]: With dead ends: 34544 [2023-03-31 02:00:43,728 INFO L226 Difference]: Without dead ends: 17849 [2023-03-31 02:00:43,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 02:00:43,748 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1596 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:43,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 565 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 02:00:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17849 states. [2023-03-31 02:00:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17849 to 17849. [2023-03-31 02:00:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17849 states, 17841 states have (on average 1.3921865366291126) internal successors, (24838), 17845 states have internal predecessors, (24838), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17849 states to 17849 states and 24841 transitions. [2023-03-31 02:00:45,828 INFO L78 Accepts]: Start accepts. Automaton has 17849 states and 24841 transitions. Word has length 165 [2023-03-31 02:00:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:45,829 INFO L495 AbstractCegarLoop]: Abstraction has 17849 states and 24841 transitions. [2023-03-31 02:00:45,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 4 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) [2023-03-31 02:00:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 17849 states and 24841 transitions. [2023-03-31 02:00:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-03-31 02:00:45,841 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:45,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 02:00:45,842 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-03-31 02:00:45,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2004108613, now seen corresponding path program 1 times [2023-03-31 02:00:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:45,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045805476] [2023-03-31 02:00:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045805476] [2023-03-31 02:00:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045805476] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211777195] [2023-03-31 02:00:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:46,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:46,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:46,566 INFO L87 Difference]: Start difference. First operand 17849 states and 24841 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 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)