/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:07:01,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:07:01,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:07:01,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:07:01,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:07:01,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:07:01,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:07:01,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:07:01,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:07:01,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:07:01,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:07:01,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:07:01,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:07:01,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:07:01,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:07:01,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:07:01,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:07:01,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:07:01,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:07:01,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:07:01,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:07:01,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:07:01,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:07:01,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:07:01,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:07:01,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:07:01,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:07:01,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:07:01,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:07:01,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 19:07:01,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:07:01,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:07:01,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:07:01,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:07:01,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:07:01,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:07:01,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:07:01,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:07:01,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:07:01,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:07:01,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:07:01,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:07:01,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:07:01,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:07:01,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:07:01,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:07:01,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:07:01,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:07:01,289 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:07:01,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:07:01,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:07:01,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:07:01,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:07:01,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:07:01,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:01,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:07:01,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:07:01,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:07:01,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:07:01,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:07:01,293 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:07:01,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:07:01,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:07:01,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:07:01,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:07:01,295 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:07:01,295 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:07:01,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:07:01,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:07:01,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:07:01,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:07:01,501 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:07:01,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 19:07:01,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfe20f93/3b2e27c97a174fe09c39aac413dcea2f/FLAGdede990f7 [2022-01-10 19:07:01,970 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:07:01,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 19:07:01,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfe20f93/3b2e27c97a174fe09c39aac413dcea2f/FLAGdede990f7 [2022-01-10 19:07:02,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cfe20f93/3b2e27c97a174fe09c39aac413dcea2f [2022-01-10 19:07:02,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:07:02,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:07:02,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:02,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:07:02,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:07:02,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5b730a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02, skipping insertion in model container [2022-01-10 19:07:02,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:07:02,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:07:02,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2022-01-10 19:07:02,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:02,642 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:07:02,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2022-01-10 19:07:02,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:02,728 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:07:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02 WrapperNode [2022-01-10 19:07:02,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:02,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:02,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:07:02,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:07:02,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,777 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 620 [2022-01-10 19:07:02,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:02,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:07:02,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:07:02,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:07:02,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:07:02,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:07:02,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:07:02,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:07:02,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (1/1) ... [2022-01-10 19:07:02,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:07:02,849 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) [2022-01-10 19:07:02,854 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 [2022-01-10 19:07:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:07:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:07:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:07:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:07:03,033 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:07:03,034 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:07:03,513 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:07:03,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:07:03,519 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:07:03,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:03 BoogieIcfgContainer [2022-01-10 19:07:03,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:07:03,521 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:07:03,521 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:07:03,523 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:07:03,525 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:03" (1/1) ... [2022-01-10 19:07:03,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:03 BasicIcfg [2022-01-10 19:07:03,789 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:07:03,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:07:03,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:07:03,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:07:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:07:02" (1/4) ... [2022-01-10 19:07:03,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281e3405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:03, skipping insertion in model container [2022-01-10 19:07:03,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:02" (2/4) ... [2022-01-10 19:07:03,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281e3405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:03, skipping insertion in model container [2022-01-10 19:07:03,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:03" (3/4) ... [2022-01-10 19:07:03,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281e3405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:07:03, skipping insertion in model container [2022-01-10 19:07:03,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:03" (4/4) ... [2022-01-10 19:07:03,796 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 19:07:03,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:07:03,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:07:03,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:07:03,844 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:07:03,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:07:03,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 19:07:03,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:03,884 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:03,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -403049593, now seen corresponding path program 1 times [2022-01-10 19:07:03,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383793279] [2022-01-10 19:07:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:03,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:04,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383793279] [2022-01-10 19:07:04,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383793279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:04,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:04,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:04,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927225443] [2022-01-10 19:07:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:04,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:04,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:04,361 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:04,464 INFO L93 Difference]: Finished difference Result 343 states and 575 transitions. [2022-01-10 19:07:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:04,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 19:07:04,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:04,476 INFO L225 Difference]: With dead ends: 343 [2022-01-10 19:07:04,476 INFO L226 Difference]: Without dead ends: 239 [2022-01-10 19:07:04,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:04,481 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 160 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:04,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 474 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-10 19:07:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-01-10 19:07:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5872340425531914) internal successors, (373), 235 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 373 transitions. [2022-01-10 19:07:04,526 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 373 transitions. Word has length 62 [2022-01-10 19:07:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:04,527 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 373 transitions. [2022-01-10 19:07:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 373 transitions. [2022-01-10 19:07:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:07:04,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:04,531 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:04,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:07:04,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 352758929, now seen corresponding path program 1 times [2022-01-10 19:07:04,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:04,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730962745] [2022-01-10 19:07:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:04,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:04,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730962745] [2022-01-10 19:07:04,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730962745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:04,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:04,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:04,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000322830] [2022-01-10 19:07:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:04,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:04,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:04,672 INFO L87 Difference]: Start difference. First operand 236 states and 373 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:04,746 INFO L93 Difference]: Finished difference Result 661 states and 1039 transitions. [2022-01-10 19:07:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:04,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 19:07:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:04,749 INFO L225 Difference]: With dead ends: 661 [2022-01-10 19:07:04,749 INFO L226 Difference]: Without dead ends: 446 [2022-01-10 19:07:04,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:04,756 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 586 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:04,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 432 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-10 19:07:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 444. [2022-01-10 19:07:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.5711060948081264) internal successors, (696), 443 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 696 transitions. [2022-01-10 19:07:04,800 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 696 transitions. Word has length 64 [2022-01-10 19:07:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:04,801 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 696 transitions. [2022-01-10 19:07:04,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 696 transitions. [2022-01-10 19:07:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:04,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:04,809 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:04,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:07:04,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash 304060755, now seen corresponding path program 1 times [2022-01-10 19:07:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331073915] [2022-01-10 19:07:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:04,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:04,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:04,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331073915] [2022-01-10 19:07:04,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331073915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:04,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:04,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:04,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408446187] [2022-01-10 19:07:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:04,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:04,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:04,907 INFO L87 Difference]: Start difference. First operand 444 states and 696 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:04,978 INFO L93 Difference]: Finished difference Result 952 states and 1542 transitions. [2022-01-10 19:07:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:04,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 19:07:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:04,982 INFO L225 Difference]: With dead ends: 952 [2022-01-10 19:07:04,982 INFO L226 Difference]: Without dead ends: 608 [2022-01-10 19:07:04,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:04,987 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 142 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:04,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 444 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-10 19:07:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 592. [2022-01-10 19:07:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.5905245346869712) internal successors, (940), 591 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 940 transitions. [2022-01-10 19:07:05,018 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 940 transitions. Word has length 65 [2022-01-10 19:07:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:05,018 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 940 transitions. [2022-01-10 19:07:05,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 940 transitions. [2022-01-10 19:07:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:05,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:05,021 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:05,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:07:05,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:05,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:05,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2044486492, now seen corresponding path program 1 times [2022-01-10 19:07:05,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:05,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973970314] [2022-01-10 19:07:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:05,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:05,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973970314] [2022-01-10 19:07:05,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973970314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:05,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:05,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:05,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431091288] [2022-01-10 19:07:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:05,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:05,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:05,105 INFO L87 Difference]: Start difference. First operand 592 states and 940 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:05,149 INFO L93 Difference]: Finished difference Result 1734 states and 2749 transitions. [2022-01-10 19:07:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 19:07:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:05,153 INFO L225 Difference]: With dead ends: 1734 [2022-01-10 19:07:05,153 INFO L226 Difference]: Without dead ends: 1166 [2022-01-10 19:07:05,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:05,158 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 208 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:05,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 662 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-10 19:07:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 594. [2022-01-10 19:07:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.5885328836424957) internal successors, (942), 593 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 942 transitions. [2022-01-10 19:07:05,189 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 942 transitions. Word has length 65 [2022-01-10 19:07:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:05,189 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 942 transitions. [2022-01-10 19:07:05,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 942 transitions. [2022-01-10 19:07:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:05,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:05,190 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:05,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:07:05,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 890843596, now seen corresponding path program 1 times [2022-01-10 19:07:05,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110853174] [2022-01-10 19:07:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:05,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:05,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:05,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110853174] [2022-01-10 19:07:05,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110853174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:05,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:05,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:07:05,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356904708] [2022-01-10 19:07:05,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:05,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:07:05,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:05,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:07:05,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:05,292 INFO L87 Difference]: Start difference. First operand 594 states and 942 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:05,441 INFO L93 Difference]: Finished difference Result 2223 states and 3516 transitions. [2022-01-10 19:07:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:07:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:07:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:05,447 INFO L225 Difference]: With dead ends: 2223 [2022-01-10 19:07:05,447 INFO L226 Difference]: Without dead ends: 1649 [2022-01-10 19:07:05,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:07:05,449 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 727 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:05,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 934 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-01-10 19:07:05,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1075. [2022-01-10 19:07:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.5698324022346368) internal successors, (1686), 1074 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1686 transitions. [2022-01-10 19:07:05,521 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1686 transitions. Word has length 66 [2022-01-10 19:07:05,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:05,522 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 1686 transitions. [2022-01-10 19:07:05,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1686 transitions. [2022-01-10 19:07:05,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:05,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:05,526 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:05,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:07:05,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 583245872, now seen corresponding path program 1 times [2022-01-10 19:07:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272014465] [2022-01-10 19:07:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:05,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:05,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:05,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272014465] [2022-01-10 19:07:05,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272014465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:05,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:05,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:05,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635712308] [2022-01-10 19:07:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:05,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:05,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:05,610 INFO L87 Difference]: Start difference. First operand 1075 states and 1686 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:05,683 INFO L93 Difference]: Finished difference Result 1929 states and 3024 transitions. [2022-01-10 19:07:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:07:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:05,687 INFO L225 Difference]: With dead ends: 1929 [2022-01-10 19:07:05,687 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 19:07:05,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:05,690 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 47 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:05,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 722 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 19:07:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 875. [2022-01-10 19:07:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.568649885583524) internal successors, (1371), 874 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1371 transitions. [2022-01-10 19:07:05,738 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1371 transitions. Word has length 66 [2022-01-10 19:07:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:05,739 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1371 transitions. [2022-01-10 19:07:05,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1371 transitions. [2022-01-10 19:07:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 19:07:05,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:05,740 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:05,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:07:05,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1015387210, now seen corresponding path program 1 times [2022-01-10 19:07:05,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:05,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656593243] [2022-01-10 19:07:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:05,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:05,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656593243] [2022-01-10 19:07:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656593243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624612351] [2022-01-10 19:07:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:05,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:05,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:05,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:05,799 INFO L87 Difference]: Start difference. First operand 875 states and 1371 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:05,859 INFO L93 Difference]: Finished difference Result 1658 states and 2660 transitions. [2022-01-10 19:07:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:05,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 19:07:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:05,889 INFO L225 Difference]: With dead ends: 1658 [2022-01-10 19:07:05,889 INFO L226 Difference]: Without dead ends: 1165 [2022-01-10 19:07:05,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:05,890 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:05,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 499 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-01-10 19:07:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1163. [2022-01-10 19:07:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.585197934595525) internal successors, (1842), 1162 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1842 transitions. [2022-01-10 19:07:05,946 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1842 transitions. Word has length 67 [2022-01-10 19:07:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1842 transitions. [2022-01-10 19:07:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1842 transitions. [2022-01-10 19:07:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 19:07:05,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:05,947 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:05,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:07:05,947 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1252622793, now seen corresponding path program 1 times [2022-01-10 19:07:05,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:05,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137976681] [2022-01-10 19:07:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:05,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:05,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:05,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137976681] [2022-01-10 19:07:05,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137976681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:05,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:05,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:05,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110134816] [2022-01-10 19:07:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:05,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:05,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:05,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:05,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:05,987 INFO L87 Difference]: Start difference. First operand 1163 states and 1842 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:06,053 INFO L93 Difference]: Finished difference Result 2315 states and 3657 transitions. [2022-01-10 19:07:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 19:07:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:06,058 INFO L225 Difference]: With dead ends: 2315 [2022-01-10 19:07:06,058 INFO L226 Difference]: Without dead ends: 1550 [2022-01-10 19:07:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:06,059 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 205 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:06,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 459 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2022-01-10 19:07:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1163. [2022-01-10 19:07:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.5834767641996557) internal successors, (1840), 1162 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1840 transitions. [2022-01-10 19:07:06,131 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1840 transitions. Word has length 69 [2022-01-10 19:07:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:06,132 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1840 transitions. [2022-01-10 19:07:06,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1840 transitions. [2022-01-10 19:07:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 19:07:06,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:06,134 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:06,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:07:06,135 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1991829530, now seen corresponding path program 1 times [2022-01-10 19:07:06,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735383167] [2022-01-10 19:07:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:06,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:06,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735383167] [2022-01-10 19:07:06,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735383167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:06,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:06,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:06,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146813922] [2022-01-10 19:07:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:06,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:06,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:06,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:06,231 INFO L87 Difference]: Start difference. First operand 1163 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:06,355 INFO L93 Difference]: Finished difference Result 2958 states and 4768 transitions. [2022-01-10 19:07:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 19:07:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:06,361 INFO L225 Difference]: With dead ends: 2958 [2022-01-10 19:07:06,361 INFO L226 Difference]: Without dead ends: 1988 [2022-01-10 19:07:06,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:06,365 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 131 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:06,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 415 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-01-10 19:07:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1974. [2022-01-10 19:07:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.5666497719209327) internal successors, (3091), 1973 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3091 transitions. [2022-01-10 19:07:06,458 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3091 transitions. Word has length 70 [2022-01-10 19:07:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:06,458 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 3091 transitions. [2022-01-10 19:07:06,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3091 transitions. [2022-01-10 19:07:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:06,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:06,459 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:06,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:07:06,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 636458944, now seen corresponding path program 1 times [2022-01-10 19:07:06,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:06,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567610242] [2022-01-10 19:07:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:06,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:06,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:06,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567610242] [2022-01-10 19:07:06,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567610242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:06,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:06,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:06,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658961118] [2022-01-10 19:07:06,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:06,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:06,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:06,535 INFO L87 Difference]: Start difference. First operand 1974 states and 3091 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:06,744 INFO L93 Difference]: Finished difference Result 5449 states and 8596 transitions. [2022-01-10 19:07:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:06,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 19:07:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:06,756 INFO L225 Difference]: With dead ends: 5449 [2022-01-10 19:07:06,756 INFO L226 Difference]: Without dead ends: 3703 [2022-01-10 19:07:06,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:06,759 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 159 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:06,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 631 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2022-01-10 19:07:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3701. [2022-01-10 19:07:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3700 states have (on average 1.5545945945945947) internal successors, (5752), 3700 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 5752 transitions. [2022-01-10 19:07:06,985 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 5752 transitions. Word has length 72 [2022-01-10 19:07:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:06,985 INFO L470 AbstractCegarLoop]: Abstraction has 3701 states and 5752 transitions. [2022-01-10 19:07:06,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 5752 transitions. [2022-01-10 19:07:06,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:06,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:06,986 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:06,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:07:06,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1171388577, now seen corresponding path program 1 times [2022-01-10 19:07:06,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:06,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608159109] [2022-01-10 19:07:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:06,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:07,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608159109] [2022-01-10 19:07:07,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608159109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:07,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:07,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207040371] [2022-01-10 19:07:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:07,033 INFO L87 Difference]: Start difference. First operand 3701 states and 5752 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:07,293 INFO L93 Difference]: Finished difference Result 7860 states and 12287 transitions. [2022-01-10 19:07:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:07,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 19:07:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:07,332 INFO L225 Difference]: With dead ends: 7860 [2022-01-10 19:07:07,332 INFO L226 Difference]: Without dead ends: 4377 [2022-01-10 19:07:07,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:07,336 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 633 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:07,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 441 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2022-01-10 19:07:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3782. [2022-01-10 19:07:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3781 states have (on average 1.5487966146522083) internal successors, (5856), 3781 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5856 transitions. [2022-01-10 19:07:07,566 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5856 transitions. Word has length 72 [2022-01-10 19:07:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 5856 transitions. [2022-01-10 19:07:07,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5856 transitions. [2022-01-10 19:07:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:07,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:07,568 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:07,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:07:07,568 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash -831809736, now seen corresponding path program 1 times [2022-01-10 19:07:07,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:07,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302536595] [2022-01-10 19:07:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:07,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:07,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302536595] [2022-01-10 19:07:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302536595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:07,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461888899] [2022-01-10 19:07:07,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:07,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:07,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:07,627 INFO L87 Difference]: Start difference. First operand 3782 states and 5856 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:07,951 INFO L93 Difference]: Finished difference Result 8735 states and 13783 transitions. [2022-01-10 19:07:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:07,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 19:07:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:07,968 INFO L225 Difference]: With dead ends: 8735 [2022-01-10 19:07:07,968 INFO L226 Difference]: Without dead ends: 5362 [2022-01-10 19:07:07,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:07,973 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 145 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:07,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 467 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2022-01-10 19:07:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5200. [2022-01-10 19:07:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5199 states have (on average 1.5597230236583959) internal successors, (8109), 5199 states have internal predecessors, (8109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 8109 transitions. [2022-01-10 19:07:08,263 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 8109 transitions. Word has length 73 [2022-01-10 19:07:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 5200 states and 8109 transitions. [2022-01-10 19:07:08,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 8109 transitions. [2022-01-10 19:07:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:08,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:08,265 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:08,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:07:08,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -247714901, now seen corresponding path program 1 times [2022-01-10 19:07:08,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:08,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143184400] [2022-01-10 19:07:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:08,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:08,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:08,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143184400] [2022-01-10 19:07:08,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143184400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:08,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:08,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:08,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607438721] [2022-01-10 19:07:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:08,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:08,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:08,295 INFO L87 Difference]: Start difference. First operand 5200 states and 8109 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:08,834 INFO L93 Difference]: Finished difference Result 15420 states and 24090 transitions. [2022-01-10 19:07:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:08,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 19:07:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:08,865 INFO L225 Difference]: With dead ends: 15420 [2022-01-10 19:07:08,865 INFO L226 Difference]: Without dead ends: 10378 [2022-01-10 19:07:08,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:08,872 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:08,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 452 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2022-01-10 19:07:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 5203. [2022-01-10 19:07:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.5595924644367551) internal successors, (8113), 5202 states have internal predecessors, (8113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 8113 transitions. [2022-01-10 19:07:09,281 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 8113 transitions. Word has length 73 [2022-01-10 19:07:09,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:09,281 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 8113 transitions. [2022-01-10 19:07:09,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 8113 transitions. [2022-01-10 19:07:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:07:09,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:09,283 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:09,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:07:09,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1348856448, now seen corresponding path program 1 times [2022-01-10 19:07:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:09,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246673510] [2022-01-10 19:07:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:09,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:09,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246673510] [2022-01-10 19:07:09,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246673510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:09,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:09,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:07:09,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22140206] [2022-01-10 19:07:09,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:07:09,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:07:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:09,354 INFO L87 Difference]: Start difference. First operand 5203 states and 8113 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:10,153 INFO L93 Difference]: Finished difference Result 19598 states and 30526 transitions. [2022-01-10 19:07:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:07:10,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 19:07:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:10,178 INFO L225 Difference]: With dead ends: 19598 [2022-01-10 19:07:10,178 INFO L226 Difference]: Without dead ends: 14491 [2022-01-10 19:07:10,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:07:10,185 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 891 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:10,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 703 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14491 states. [2022-01-10 19:07:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 9382. [2022-01-10 19:07:10,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9382 states, 9381 states have (on average 1.5449312440038376) internal successors, (14493), 9381 states have internal predecessors, (14493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9382 states to 9382 states and 14493 transitions. [2022-01-10 19:07:10,800 INFO L78 Accepts]: Start accepts. Automaton has 9382 states and 14493 transitions. Word has length 74 [2022-01-10 19:07:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:10,801 INFO L470 AbstractCegarLoop]: Abstraction has 9382 states and 14493 transitions. [2022-01-10 19:07:10,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 9382 states and 14493 transitions. [2022-01-10 19:07:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:07:10,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:10,804 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:10,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:07:10,804 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1495911614, now seen corresponding path program 1 times [2022-01-10 19:07:10,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:10,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628404013] [2022-01-10 19:07:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:10,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:10,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:10,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628404013] [2022-01-10 19:07:10,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628404013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:10,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:10,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:10,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004635493] [2022-01-10 19:07:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:10,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:10,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:10,850 INFO L87 Difference]: Start difference. First operand 9382 states and 14493 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:11,495 INFO L93 Difference]: Finished difference Result 17096 states and 26395 transitions. [2022-01-10 19:07:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:11,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 19:07:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:11,509 INFO L225 Difference]: With dead ends: 17096 [2022-01-10 19:07:11,509 INFO L226 Difference]: Without dead ends: 7722 [2022-01-10 19:07:11,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:11,520 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 61 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:11,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 720 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7722 states. [2022-01-10 19:07:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7722 to 7722. [2022-01-10 19:07:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 7721 states have (on average 1.5428053360963605) internal successors, (11912), 7721 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 11912 transitions. [2022-01-10 19:07:12,094 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 11912 transitions. Word has length 74 [2022-01-10 19:07:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:12,095 INFO L470 AbstractCegarLoop]: Abstraction has 7722 states and 11912 transitions. [2022-01-10 19:07:12,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 11912 transitions. [2022-01-10 19:07:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 19:07:12,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:12,096 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:12,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:07:12,097 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash -659127877, now seen corresponding path program 1 times [2022-01-10 19:07:12,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:12,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189526983] [2022-01-10 19:07:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:12,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:12,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:12,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189526983] [2022-01-10 19:07:12,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189526983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:12,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:12,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:12,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432777064] [2022-01-10 19:07:12,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:12,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:12,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:12,145 INFO L87 Difference]: Start difference. First operand 7722 states and 11912 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:12,680 INFO L93 Difference]: Finished difference Result 14446 states and 22777 transitions. [2022-01-10 19:07:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:12,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 19:07:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:12,693 INFO L225 Difference]: With dead ends: 14446 [2022-01-10 19:07:12,693 INFO L226 Difference]: Without dead ends: 9551 [2022-01-10 19:07:12,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:12,699 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 138 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:12,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 510 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9551 states. [2022-01-10 19:07:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9551 to 9549. [2022-01-10 19:07:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9549 states, 9548 states have (on average 1.5573942186845413) internal successors, (14870), 9548 states have internal predecessors, (14870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9549 states to 9549 states and 14870 transitions. [2022-01-10 19:07:13,303 INFO L78 Accepts]: Start accepts. Automaton has 9549 states and 14870 transitions. Word has length 75 [2022-01-10 19:07:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 9549 states and 14870 transitions. [2022-01-10 19:07:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9549 states and 14870 transitions. [2022-01-10 19:07:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 19:07:13,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:13,305 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:13,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:07:13,305 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2001843853, now seen corresponding path program 1 times [2022-01-10 19:07:13,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:13,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642482004] [2022-01-10 19:07:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:13,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:13,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642482004] [2022-01-10 19:07:13,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642482004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:13,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:13,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:13,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121512791] [2022-01-10 19:07:13,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:13,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:13,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:13,403 INFO L87 Difference]: Start difference. First operand 9549 states and 14870 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:15,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:07:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:16,733 INFO L93 Difference]: Finished difference Result 26497 states and 41704 transitions. [2022-01-10 19:07:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 19:07:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:16,797 INFO L225 Difference]: With dead ends: 26497 [2022-01-10 19:07:16,797 INFO L226 Difference]: Without dead ends: 17495 [2022-01-10 19:07:16,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:16,828 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 119 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:16,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 421 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 19:07:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17495 states. [2022-01-10 19:07:18,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17495 to 17349. [2022-01-10 19:07:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17349 states, 17348 states have (on average 1.5585658289139959) internal successors, (27038), 17348 states have internal predecessors, (27038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17349 states to 17349 states and 27038 transitions. [2022-01-10 19:07:18,417 INFO L78 Accepts]: Start accepts. Automaton has 17349 states and 27038 transitions. Word has length 78 [2022-01-10 19:07:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:18,418 INFO L470 AbstractCegarLoop]: Abstraction has 17349 states and 27038 transitions. [2022-01-10 19:07:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 17349 states and 27038 transitions. [2022-01-10 19:07:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:07:18,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:18,426 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:18,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:07:18,426 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1817454921, now seen corresponding path program 1 times [2022-01-10 19:07:18,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:18,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916467048] [2022-01-10 19:07:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:18,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:18,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:18,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916467048] [2022-01-10 19:07:18,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916467048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:18,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:18,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:18,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930131933] [2022-01-10 19:07:18,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:18,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:18,494 INFO L87 Difference]: Start difference. First operand 17349 states and 27038 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:20,259 INFO L93 Difference]: Finished difference Result 44585 states and 69681 transitions. [2022-01-10 19:07:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 19:07:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:20,313 INFO L225 Difference]: With dead ends: 44585 [2022-01-10 19:07:20,313 INFO L226 Difference]: Without dead ends: 27783 [2022-01-10 19:07:20,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:20,338 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 143 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:20,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 601 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27783 states. [2022-01-10 19:07:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27783 to 27781. [2022-01-10 19:07:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27781 states, 27780 states have (on average 1.5449604031677466) internal successors, (42919), 27780 states have internal predecessors, (42919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27781 states to 27781 states and 42919 transitions. [2022-01-10 19:07:22,422 INFO L78 Accepts]: Start accepts. Automaton has 27781 states and 42919 transitions. Word has length 80 [2022-01-10 19:07:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:22,422 INFO L470 AbstractCegarLoop]: Abstraction has 27781 states and 42919 transitions. [2022-01-10 19:07:22,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 27781 states and 42919 transitions. [2022-01-10 19:07:22,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:07:22,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:22,425 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:22,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:07:22,425 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1166164400, now seen corresponding path program 1 times [2022-01-10 19:07:22,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:22,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372548788] [2022-01-10 19:07:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:22,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:22,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372548788] [2022-01-10 19:07:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372548788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:22,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:22,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:22,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975841514] [2022-01-10 19:07:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:22,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:22,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:22,498 INFO L87 Difference]: Start difference. First operand 27781 states and 42919 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:24,214 INFO L93 Difference]: Finished difference Result 52062 states and 80349 transitions. [2022-01-10 19:07:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 19:07:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:24,253 INFO L225 Difference]: With dead ends: 52062 [2022-01-10 19:07:24,253 INFO L226 Difference]: Without dead ends: 24306 [2022-01-10 19:07:24,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:24,279 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 51 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:24,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 710 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24306 states. [2022-01-10 19:07:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24306 to 24306. [2022-01-10 19:07:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24306 states, 24305 states have (on average 1.5413700884591648) internal successors, (37463), 24305 states have internal predecessors, (37463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24306 states to 24306 states and 37463 transitions. [2022-01-10 19:07:26,256 INFO L78 Accepts]: Start accepts. Automaton has 24306 states and 37463 transitions. Word has length 80 [2022-01-10 19:07:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:26,256 INFO L470 AbstractCegarLoop]: Abstraction has 24306 states and 37463 transitions. [2022-01-10 19:07:26,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24306 states and 37463 transitions. [2022-01-10 19:07:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:07:26,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:26,259 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:26,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:07:26,259 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2097093016, now seen corresponding path program 1 times [2022-01-10 19:07:26,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736113353] [2022-01-10 19:07:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:26,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:26,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736113353] [2022-01-10 19:07:26,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736113353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:26,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:26,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:26,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775430635] [2022-01-10 19:07:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:26,320 INFO L87 Difference]: Start difference. First operand 24306 states and 37463 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:29,151 INFO L93 Difference]: Finished difference Result 61638 states and 95132 transitions. [2022-01-10 19:07:29,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:29,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 19:07:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:29,211 INFO L225 Difference]: With dead ends: 61638 [2022-01-10 19:07:29,211 INFO L226 Difference]: Without dead ends: 37972 [2022-01-10 19:07:29,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:29,234 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 149 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:29,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 619 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37972 states. [2022-01-10 19:07:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37972 to 37970. [2022-01-10 19:07:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37970 states, 37969 states have (on average 1.5244541599726091) internal successors, (57882), 37969 states have internal predecessors, (57882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37970 states to 37970 states and 57882 transitions. [2022-01-10 19:07:32,446 INFO L78 Accepts]: Start accepts. Automaton has 37970 states and 57882 transitions. Word has length 80 [2022-01-10 19:07:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:32,447 INFO L470 AbstractCegarLoop]: Abstraction has 37970 states and 57882 transitions. [2022-01-10 19:07:32,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 37970 states and 57882 transitions. [2022-01-10 19:07:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 19:07:32,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:32,475 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:32,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:07:32,476 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2070884042, now seen corresponding path program 1 times [2022-01-10 19:07:32,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:32,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684441277] [2022-01-10 19:07:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:32,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:32,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:32,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684441277] [2022-01-10 19:07:32,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684441277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:32,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:32,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:32,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248424301] [2022-01-10 19:07:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:32,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:32,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:32,624 INFO L87 Difference]: Start difference. First operand 37970 states and 57882 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:36,510 INFO L93 Difference]: Finished difference Result 85398 states and 130636 transitions. [2022-01-10 19:07:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:36,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 19:07:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:36,591 INFO L225 Difference]: With dead ends: 85398 [2022-01-10 19:07:36,591 INFO L226 Difference]: Without dead ends: 53076 [2022-01-10 19:07:36,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:36,622 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 126 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:36,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 437 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-10 19:07:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 50962. [2022-01-10 19:07:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50962 states, 50961 states have (on average 1.5153941249190557) internal successors, (77226), 50961 states have internal predecessors, (77226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 77226 transitions. [2022-01-10 19:07:40,667 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 77226 transitions. Word has length 81 [2022-01-10 19:07:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:40,667 INFO L470 AbstractCegarLoop]: Abstraction has 50962 states and 77226 transitions. [2022-01-10 19:07:40,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 77226 transitions. [2022-01-10 19:07:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:07:40,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:40,683 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:40,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:07:40,683 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 525523114, now seen corresponding path program 1 times [2022-01-10 19:07:40,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:40,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893832093] [2022-01-10 19:07:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:40,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:40,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:40,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893832093] [2022-01-10 19:07:40,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893832093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:40,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:40,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:40,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701752313] [2022-01-10 19:07:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:40,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:40,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:40,761 INFO L87 Difference]: Start difference. First operand 50962 states and 77226 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:45,131 INFO L93 Difference]: Finished difference Result 103796 states and 157142 transitions. [2022-01-10 19:07:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:45,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 19:07:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:45,233 INFO L225 Difference]: With dead ends: 103796 [2022-01-10 19:07:45,233 INFO L226 Difference]: Without dead ends: 52979 [2022-01-10 19:07:45,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:45,286 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 468 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:45,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 478 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52979 states. [2022-01-10 19:07:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52979 to 51065. [2022-01-10 19:07:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51065 states, 51064 states have (on average 1.5141978693404354) internal successors, (77321), 51064 states have internal predecessors, (77321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51065 states to 51065 states and 77321 transitions. [2022-01-10 19:07:49,564 INFO L78 Accepts]: Start accepts. Automaton has 51065 states and 77321 transitions. Word has length 82 [2022-01-10 19:07:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:49,564 INFO L470 AbstractCegarLoop]: Abstraction has 51065 states and 77321 transitions. [2022-01-10 19:07:49,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 51065 states and 77321 transitions. [2022-01-10 19:07:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 19:07:49,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:49,581 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:07:49,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:07:49,582 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash 917335389, now seen corresponding path program 1 times [2022-01-10 19:07:49,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306976421] [2022-01-10 19:07:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:49,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:49,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:49,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306976421] [2022-01-10 19:07:49,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306976421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:49,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:49,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:49,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206817869] [2022-01-10 19:07:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:49,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:49,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:49,643 INFO L87 Difference]: Start difference. First operand 51065 states and 77321 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:57,571 INFO L93 Difference]: Finished difference Result 139976 states and 212109 transitions. [2022-01-10 19:07:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:57,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 19:07:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:57,795 INFO L225 Difference]: With dead ends: 139976 [2022-01-10 19:07:57,795 INFO L226 Difference]: Without dead ends: 101963 [2022-01-10 19:07:57,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:57,836 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 194 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:57,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 632 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101963 states. [2022-01-10 19:08:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101963 to 51077. [2022-01-10 19:08:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51077 states, 51076 states have (on average 1.514077061633644) internal successors, (77333), 51076 states have internal predecessors, (77333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51077 states to 51077 states and 77333 transitions. [2022-01-10 19:08:02,637 INFO L78 Accepts]: Start accepts. Automaton has 51077 states and 77333 transitions. Word has length 83 [2022-01-10 19:08:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:02,637 INFO L470 AbstractCegarLoop]: Abstraction has 51077 states and 77333 transitions. [2022-01-10 19:08:02,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 51077 states and 77333 transitions. [2022-01-10 19:08:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:08:02,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:02,640 INFO L514 BasicCegarLoop]: 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] [2022-01-10 19:08:02,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:08:02,640 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -286315931, now seen corresponding path program 1 times [2022-01-10 19:08:02,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:02,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317861652] [2022-01-10 19:08:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:02,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:02,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317861652] [2022-01-10 19:08:02,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317861652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:02,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:02,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:02,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780146298] [2022-01-10 19:08:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:02,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:02,722 INFO L87 Difference]: Start difference. First operand 51077 states and 77333 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,475 INFO L93 Difference]: Finished difference Result 135400 states and 204806 transitions. [2022-01-10 19:08:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:08:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,646 INFO L225 Difference]: With dead ends: 135400 [2022-01-10 19:08:10,646 INFO L226 Difference]: Without dead ends: 87152 [2022-01-10 19:08:10,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:08:10,687 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 566 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:10,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 882 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87152 states.