/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:17:16,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:17:16,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:17:16,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:17:16,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:17:16,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:17:16,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:17:16,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:17:16,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:17:16,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:17:16,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:17:16,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:17:16,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:17:16,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:17:16,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:17:16,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:17:16,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:17:16,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:17:16,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:17:16,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:17:16,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:17:16,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:17:16,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:17:16,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:17:16,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:17:16,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:17:16,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:17:16,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:17:16,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:17:16,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:17:16,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:17:16,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:17:16,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:17:16,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:17:16,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:17:16,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:17:16,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:17:16,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:17:16,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:17:16,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:17:16,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:17:16,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:17:16,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:17:16,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:17:16,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:17:16,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:17:16,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:17:16,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:17:16,280 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:17:16,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:17:16,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:17:16,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:17:16,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:17:16,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:17:16,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:17:16,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:17:16,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:17:16,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:17:16,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:17:16,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:17:16,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:17:16,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:17:16,285 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:17:16,285 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:17:16,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:17:16,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:17:16,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:17:16,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:17:16,553 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:17:16,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-01-11 06:17:16,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9d400f4/3e166c1dedae401f818930257b264188/FLAG4c7207859 [2022-01-11 06:17:17,054 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:17:17,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-01-11 06:17:17,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9d400f4/3e166c1dedae401f818930257b264188/FLAG4c7207859 [2022-01-11 06:17:17,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9d400f4/3e166c1dedae401f818930257b264188 [2022-01-11 06:17:17,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:17:17,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:17:17,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:17:17,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:17:17,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:17:17,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8e23ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17, skipping insertion in model container [2022-01-11 06:17:17,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:17:17,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:17:17,439 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/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 06:17:17,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:17:17,462 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:17:17,531 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/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2022-01-11 06:17:17,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:17:17,550 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:17:17,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17 WrapperNode [2022-01-11 06:17:17,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:17:17,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:17:17,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:17:17,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:17:17,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,608 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 462 [2022-01-11 06:17:17,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:17:17,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:17:17,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:17:17,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:17:17,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:17:17,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:17:17,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:17:17,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:17:17,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (1/1) ... [2022-01-11 06:17:17,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:17:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:17:17,720 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) [2022-01-11 06:17:17,740 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 [2022-01-11 06:17:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:17:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:17:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:17:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:17:17,867 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:17:17,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:17:18,292 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:17:18,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:17:18,301 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:17:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:17:18 BoogieIcfgContainer [2022-01-11 06:17:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:17:18,304 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:17:18,304 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:17:18,309 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:17:18,312 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:17:18" (1/1) ... [2022-01-11 06:17:18,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:17:18 BasicIcfg [2022-01-11 06:17:18,785 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:17:18,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:17:18,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:17:18,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:17:18,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:17:17" (1/4) ... [2022-01-11 06:17:18,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56601b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:17:18, skipping insertion in model container [2022-01-11 06:17:18,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:17:17" (2/4) ... [2022-01-11 06:17:18,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56601b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:17:18, skipping insertion in model container [2022-01-11 06:17:18,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:17:18" (3/4) ... [2022-01-11 06:17:18,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56601b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:17:18, skipping insertion in model container [2022-01-11 06:17:18,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:17:18" (4/4) ... [2022-01-11 06:17:18,792 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 06:17:18,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:17:18,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:17:18,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:17:18,859 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 [2022-01-11 06:17:18,859 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:17:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 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) [2022-01-11 06:17:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:17:18,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:18,884 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] [2022-01-11 06:17:18,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1398747681, now seen corresponding path program 1 times [2022-01-11 06:17:18,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:18,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29258290] [2022-01-11 06:17:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:18,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:19,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29258290] [2022-01-11 06:17:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29258290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:19,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:17:19,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739078632] [2022-01-11 06:17:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:17:19,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:17:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:17:19,253 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.748299319727891) internal successors, (257), 148 states have internal predecessors, (257), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-01-11 06:17:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:19,294 INFO L93 Difference]: Finished difference Result 235 states and 403 transitions. [2022-01-11 06:17:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:17:19,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-01-11 06:17:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:19,307 INFO L225 Difference]: With dead ends: 235 [2022-01-11 06:17:19,307 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 06:17:19,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:17:19,313 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:19,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 06:17:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 06:17:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 144 states have internal predecessors, (250), 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) [2022-01-11 06:17:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 250 transitions. [2022-01-11 06:17:19,363 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 250 transitions. Word has length 37 [2022-01-11 06:17:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:19,363 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 250 transitions. [2022-01-11 06:17:19,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-01-11 06:17:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 250 transitions. [2022-01-11 06:17:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:17:19,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:19,370 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] [2022-01-11 06:17:19,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:17:19,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash 989923456, now seen corresponding path program 1 times [2022-01-11 06:17:19,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963530967] [2022-01-11 06:17:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:19,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:19,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:19,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963530967] [2022-01-11 06:17:19,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963530967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:19,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:19,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:17:19,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648183830] [2022-01-11 06:17:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:19,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:17:19,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:17:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:19,601 INFO L87 Difference]: Start difference. First operand 145 states and 250 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-11 06:17:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:19,697 INFO L93 Difference]: Finished difference Result 234 states and 396 transitions. [2022-01-11 06:17:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:17:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-01-11 06:17:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:19,701 INFO L225 Difference]: With dead ends: 234 [2022-01-11 06:17:19,701 INFO L226 Difference]: Without dead ends: 145 [2022-01-11 06:17:19,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:17:19,703 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:19,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 959 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:17:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-11 06:17:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-11 06:17:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 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) [2022-01-11 06:17:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2022-01-11 06:17:19,710 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 37 [2022-01-11 06:17:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:19,710 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2022-01-11 06:17:19,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-11 06:17:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2022-01-11 06:17:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:17:19,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:19,712 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] [2022-01-11 06:17:19,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:17:19,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:19,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1440046453, now seen corresponding path program 1 times [2022-01-11 06:17:19,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:19,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473582621] [2022-01-11 06:17:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:19,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:19,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:19,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473582621] [2022-01-11 06:17:19,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473582621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:19,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:19,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:19,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304516038] [2022-01-11 06:17:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:19,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:19,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:19,940 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-01-11 06:17:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:19,985 INFO L93 Difference]: Finished difference Result 297 states and 472 transitions. [2022-01-11 06:17:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:19,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-01-11 06:17:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:19,990 INFO L225 Difference]: With dead ends: 297 [2022-01-11 06:17:19,990 INFO L226 Difference]: Without dead ends: 212 [2022-01-11 06:17:19,995 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 [2022-01-11 06:17:19,998 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:19,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 374 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-11 06:17:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-01-11 06:17:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 208 states have internal predecessors, (322), 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) [2022-01-11 06:17:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2022-01-11 06:17:20,013 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 66 [2022-01-11 06:17:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,014 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2022-01-11 06:17:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-01-11 06:17:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2022-01-11 06:17:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:17:20,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,016 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] [2022-01-11 06:17:20,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:17:20,016 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash -675771091, now seen corresponding path program 1 times [2022-01-11 06:17:20,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771666615] [2022-01-11 06:17:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771666615] [2022-01-11 06:17:20,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771666615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:20,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584964358] [2022-01-11 06:17:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:20,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:20,164 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-01-11 06:17:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:20,217 INFO L93 Difference]: Finished difference Result 591 states and 904 transitions. [2022-01-11 06:17:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2022-01-11 06:17:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:20,221 INFO L225 Difference]: With dead ends: 591 [2022-01-11 06:17:20,221 INFO L226 Difference]: Without dead ends: 407 [2022-01-11 06:17:20,222 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 [2022-01-11 06:17:20,231 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 569 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 419 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 [2022-01-11 06:17:20,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 419 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-11 06:17:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-01-11 06:17:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.5346534653465347) internal successors, (620), 404 states have internal predecessors, (620), 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) [2022-01-11 06:17:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 620 transitions. [2022-01-11 06:17:20,256 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 620 transitions. Word has length 68 [2022-01-11 06:17:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,257 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 620 transitions. [2022-01-11 06:17:20,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-01-11 06:17:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 620 transitions. [2022-01-11 06:17:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:17:20,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,259 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] [2022-01-11 06:17:20,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:17:20,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -78252645, now seen corresponding path program 1 times [2022-01-11 06:17:20,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952329400] [2022-01-11 06:17:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952329400] [2022-01-11 06:17:20,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952329400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:20,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770464932] [2022-01-11 06:17:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:20,337 INFO L87 Difference]: Start difference. First operand 405 states and 620 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) [2022-01-11 06:17:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:20,367 INFO L93 Difference]: Finished difference Result 844 states and 1330 transitions. [2022-01-11 06:17:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:20,367 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 [2022-01-11 06:17:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:20,371 INFO L225 Difference]: With dead ends: 844 [2022-01-11 06:17:20,371 INFO L226 Difference]: Without dead ends: 553 [2022-01-11 06:17:20,371 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 [2022-01-11 06:17:20,372 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 120 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 419 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 [2022-01-11 06:17:20,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-01-11 06:17:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 537. [2022-01-11 06:17:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.546641791044776) internal successors, (829), 536 states have internal predecessors, (829), 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) [2022-01-11 06:17:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 829 transitions. [2022-01-11 06:17:20,393 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 829 transitions. Word has length 69 [2022-01-11 06:17:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,394 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 829 transitions. [2022-01-11 06:17:20,395 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) [2022-01-11 06:17:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 829 transitions. [2022-01-11 06:17:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:17:20,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,403 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] [2022-01-11 06:17:20,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:17:20,404 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1080232415, now seen corresponding path program 1 times [2022-01-11 06:17:20,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027994815] [2022-01-11 06:17:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027994815] [2022-01-11 06:17:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027994815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:20,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261040570] [2022-01-11 06:17:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:20,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:20,492 INFO L87 Difference]: Start difference. First operand 537 states and 829 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) [2022-01-11 06:17:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:20,517 INFO L93 Difference]: Finished difference Result 1573 states and 2423 transitions. [2022-01-11 06:17:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:20,518 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 [2022-01-11 06:17:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:20,521 INFO L225 Difference]: With dead ends: 1573 [2022-01-11 06:17:20,521 INFO L226 Difference]: Without dead ends: 1064 [2022-01-11 06:17:20,522 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 [2022-01-11 06:17:20,523 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 209 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 637 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 [2022-01-11 06:17:20,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 637 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-11 06:17:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 539. [2022-01-11 06:17:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5446096654275092) internal successors, (831), 538 states have internal predecessors, (831), 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) [2022-01-11 06:17:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 831 transitions. [2022-01-11 06:17:20,543 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 831 transitions. Word has length 69 [2022-01-11 06:17:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,543 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 831 transitions. [2022-01-11 06:17:20,543 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) [2022-01-11 06:17:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 831 transitions. [2022-01-11 06:17:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 06:17:20,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,544 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] [2022-01-11 06:17:20,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:17:20,545 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1947452488, now seen corresponding path program 1 times [2022-01-11 06:17:20,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519896401] [2022-01-11 06:17:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519896401] [2022-01-11 06:17:20,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519896401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:17:20,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001137446] [2022-01-11 06:17:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:17:20,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:17:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:20,636 INFO L87 Difference]: Start difference. First operand 539 states and 831 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2022-01-11 06:17:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:20,693 INFO L93 Difference]: Finished difference Result 1577 states and 2429 transitions. [2022-01-11 06:17:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 [2022-01-11 06:17:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:20,699 INFO L225 Difference]: With dead ends: 1577 [2022-01-11 06:17:20,699 INFO L226 Difference]: Without dead ends: 1050 [2022-01-11 06:17:20,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:20,701 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 526 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:20,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 698 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-01-11 06:17:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2022-01-11 06:17:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.5300859598853869) internal successors, (1602), 1047 states have internal predecessors, (1602), 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) [2022-01-11 06:17:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1602 transitions. [2022-01-11 06:17:20,740 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1602 transitions. Word has length 70 [2022-01-11 06:17:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,740 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1602 transitions. [2022-01-11 06:17:20,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2022-01-11 06:17:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1602 transitions. [2022-01-11 06:17:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 06:17:20,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,742 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] [2022-01-11 06:17:20,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:17:20,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1781239468, now seen corresponding path program 1 times [2022-01-11 06:17:20,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147773503] [2022-01-11 06:17:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147773503] [2022-01-11 06:17:20,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147773503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:20,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100651416] [2022-01-11 06:17:20,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:20,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:20,814 INFO L87 Difference]: Start difference. First operand 1048 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-01-11 06:17:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:20,851 INFO L93 Difference]: Finished difference Result 1826 states and 2785 transitions. [2022-01-11 06:17:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 [2022-01-11 06:17:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:20,855 INFO L225 Difference]: With dead ends: 1826 [2022-01-11 06:17:20,855 INFO L226 Difference]: Without dead ends: 794 [2022-01-11 06:17:20,856 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 [2022-01-11 06:17:20,857 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 69 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 695 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 [2022-01-11 06:17:20,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 695 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-11 06:17:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2022-01-11 06:17:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5220680958385877) internal successors, (1207), 793 states have internal predecessors, (1207), 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) [2022-01-11 06:17:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1207 transitions. [2022-01-11 06:17:20,889 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1207 transitions. Word has length 70 [2022-01-11 06:17:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:20,890 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1207 transitions. [2022-01-11 06:17:20,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-01-11 06:17:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1207 transitions. [2022-01-11 06:17:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 06:17:20,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:20,894 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] [2022-01-11 06:17:20,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:17:20,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1129936617, now seen corresponding path program 1 times [2022-01-11 06:17:20,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:20,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996544512] [2022-01-11 06:17:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:20,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:20,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996544512] [2022-01-11 06:17:20,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996544512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:20,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:20,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:20,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153054464] [2022-01-11 06:17:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:20,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:20,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:20,979 INFO L87 Difference]: Start difference. First operand 794 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-01-11 06:17:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:21,016 INFO L93 Difference]: Finished difference Result 1619 states and 2537 transitions. [2022-01-11 06:17:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-01-11 06:17:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:21,021 INFO L225 Difference]: With dead ends: 1619 [2022-01-11 06:17:21,021 INFO L226 Difference]: Without dead ends: 989 [2022-01-11 06:17:21,022 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 [2022-01-11 06:17:21,024 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 500 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 [2022-01-11 06:17:21,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 500 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-01-11 06:17:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 987. [2022-01-11 06:17:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 986 states have (on average 1.5446247464503042) internal successors, (1523), 986 states have internal predecessors, (1523), 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) [2022-01-11 06:17:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1523 transitions. [2022-01-11 06:17:21,061 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1523 transitions. Word has length 71 [2022-01-11 06:17:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:21,062 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1523 transitions. [2022-01-11 06:17:21,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2022-01-11 06:17:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1523 transitions. [2022-01-11 06:17:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 06:17:21,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:21,064 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] [2022-01-11 06:17:21,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:17:21,065 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:21,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1577004108, now seen corresponding path program 1 times [2022-01-11 06:17:21,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:21,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814586386] [2022-01-11 06:17:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:21,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:21,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:21,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814586386] [2022-01-11 06:17:21,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814586386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:21,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:21,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:21,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011344067] [2022-01-11 06:17:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:21,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:21,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:21,124 INFO L87 Difference]: Start difference. First operand 987 states and 1523 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) [2022-01-11 06:17:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:21,160 INFO L93 Difference]: Finished difference Result 1949 states and 3000 transitions. [2022-01-11 06:17:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:21,161 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 [2022-01-11 06:17:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:21,165 INFO L225 Difference]: With dead ends: 1949 [2022-01-11 06:17:21,165 INFO L226 Difference]: Without dead ends: 1303 [2022-01-11 06:17:21,166 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 [2022-01-11 06:17:21,168 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 206 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 439 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 [2022-01-11 06:17:21,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-11 06:17:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 987. [2022-01-11 06:17:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 986 states have (on average 1.5436105476673427) internal successors, (1522), 986 states have internal predecessors, (1522), 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) [2022-01-11 06:17:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1522 transitions. [2022-01-11 06:17:21,209 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1522 transitions. Word has length 72 [2022-01-11 06:17:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:21,209 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1522 transitions. [2022-01-11 06:17:21,209 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) [2022-01-11 06:17:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1522 transitions. [2022-01-11 06:17:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:17:21,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:21,211 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] [2022-01-11 06:17:21,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:17:21,211 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash -131082838, now seen corresponding path program 1 times [2022-01-11 06:17:21,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190522734] [2022-01-11 06:17:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:21,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:21,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:21,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190522734] [2022-01-11 06:17:21,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190522734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:21,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:21,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:21,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073928396] [2022-01-11 06:17:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:21,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:21,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:21,361 INFO L87 Difference]: Start difference. First operand 987 states and 1522 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) [2022-01-11 06:17:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:21,464 INFO L93 Difference]: Finished difference Result 2529 states and 4004 transitions. [2022-01-11 06:17:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:21,465 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 [2022-01-11 06:17:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:21,471 INFO L225 Difference]: With dead ends: 2529 [2022-01-11 06:17:21,471 INFO L226 Difference]: Without dead ends: 1712 [2022-01-11 06:17:21,474 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 [2022-01-11 06:17:21,475 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:21,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 396 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2022-01-11 06:17:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1698. [2022-01-11 06:17:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.5615792575132588) internal successors, (2650), 1697 states have internal predecessors, (2650), 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) [2022-01-11 06:17:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2650 transitions. [2022-01-11 06:17:21,560 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2650 transitions. Word has length 73 [2022-01-11 06:17:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:21,561 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 2650 transitions. [2022-01-11 06:17:21,561 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) [2022-01-11 06:17:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2650 transitions. [2022-01-11 06:17:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:17:21,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:21,562 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] [2022-01-11 06:17:21,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:17:21,563 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 707636287, now seen corresponding path program 1 times [2022-01-11 06:17:21,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566287254] [2022-01-11 06:17:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:21,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:21,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:21,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566287254] [2022-01-11 06:17:21,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566287254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:21,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:21,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:21,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141471025] [2022-01-11 06:17:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:21,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:21,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:21,697 INFO L87 Difference]: Start difference. First operand 1698 states and 2650 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2022-01-11 06:17:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:21,842 INFO L93 Difference]: Finished difference Result 4943 states and 7704 transitions. [2022-01-11 06:17:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:21,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 [2022-01-11 06:17:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:21,854 INFO L225 Difference]: With dead ends: 4943 [2022-01-11 06:17:21,854 INFO L226 Difference]: Without dead ends: 3292 [2022-01-11 06:17:21,857 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 [2022-01-11 06:17:21,858 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 516 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 424 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 [2022-01-11 06:17:21,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2022-01-11 06:17:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3290. [2022-01-11 06:17:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.5491030708422013) internal successors, (5095), 3289 states have internal predecessors, (5095), 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) [2022-01-11 06:17:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 5095 transitions. [2022-01-11 06:17:22,039 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 5095 transitions. Word has length 75 [2022-01-11 06:17:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:22,039 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 5095 transitions. [2022-01-11 06:17:22,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2022-01-11 06:17:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 5095 transitions. [2022-01-11 06:17:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:17:22,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:22,041 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] [2022-01-11 06:17:22,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:17:22,042 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash 421067398, now seen corresponding path program 1 times [2022-01-11 06:17:22,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546817336] [2022-01-11 06:17:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:22,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:22,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546817336] [2022-01-11 06:17:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546817336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:22,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:22,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:22,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847520546] [2022-01-11 06:17:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:22,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:22,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:22,133 INFO L87 Difference]: Start difference. First operand 3290 states and 5095 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-01-11 06:17:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:22,294 INFO L93 Difference]: Finished difference Result 7715 states and 12146 transitions. [2022-01-11 06:17:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:22,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-11 06:17:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:22,311 INFO L225 Difference]: With dead ends: 7715 [2022-01-11 06:17:22,311 INFO L226 Difference]: Without dead ends: 4739 [2022-01-11 06:17:22,316 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 [2022-01-11 06:17:22,317 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 121 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 416 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 [2022-01-11 06:17:22,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 416 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2022-01-11 06:17:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4577. [2022-01-11 06:17:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4577 states, 4576 states have (on average 1.5493881118881119) internal successors, (7090), 4576 states have internal predecessors, (7090), 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) [2022-01-11 06:17:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 7090 transitions. [2022-01-11 06:17:22,537 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 7090 transitions. Word has length 76 [2022-01-11 06:17:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:22,537 INFO L470 AbstractCegarLoop]: Abstraction has 4577 states and 7090 transitions. [2022-01-11 06:17:22,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-01-11 06:17:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 7090 transitions. [2022-01-11 06:17:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:17:22,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:22,539 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] [2022-01-11 06:17:22,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:17:22,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1928574555, now seen corresponding path program 1 times [2022-01-11 06:17:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:22,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583527010] [2022-01-11 06:17:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:22,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:22,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583527010] [2022-01-11 06:17:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583527010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:22,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062095190] [2022-01-11 06:17:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:22,608 INFO L87 Difference]: Start difference. First operand 4577 states and 7090 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2022-01-11 06:17:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:22,939 INFO L93 Difference]: Finished difference Result 12489 states and 19441 transitions. [2022-01-11 06:17:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2022-01-11 06:17:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:22,984 INFO L225 Difference]: With dead ends: 12489 [2022-01-11 06:17:22,984 INFO L226 Difference]: Without dead ends: 8086 [2022-01-11 06:17:22,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:22,994 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 394 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 574 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 [2022-01-11 06:17:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 574 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-01-11 06:17:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 8084. [2022-01-11 06:17:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8084 states, 8083 states have (on average 1.5358159099344302) internal successors, (12414), 8083 states have internal predecessors, (12414), 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) [2022-01-11 06:17:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 12414 transitions. [2022-01-11 06:17:23,453 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 12414 transitions. Word has length 76 [2022-01-11 06:17:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:23,454 INFO L470 AbstractCegarLoop]: Abstraction has 8084 states and 12414 transitions. [2022-01-11 06:17:23,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2022-01-11 06:17:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 12414 transitions. [2022-01-11 06:17:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:17:23,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:23,457 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] [2022-01-11 06:17:23,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:17:23,457 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -974345660, now seen corresponding path program 1 times [2022-01-11 06:17:23,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:23,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477512869] [2022-01-11 06:17:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:23,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:23,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:23,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477512869] [2022-01-11 06:17:23,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477512869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:23,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:23,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019798565] [2022-01-11 06:17:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:23,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:23,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:23,502 INFO L87 Difference]: Start difference. First operand 8084 states and 12414 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-01-11 06:17:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:24,098 INFO L93 Difference]: Finished difference Result 23962 states and 36877 transitions. [2022-01-11 06:17:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-11 06:17:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:24,140 INFO L225 Difference]: With dead ends: 23962 [2022-01-11 06:17:24,140 INFO L226 Difference]: Without dead ends: 16032 [2022-01-11 06:17:24,154 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 [2022-01-11 06:17:24,155 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 195 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 617 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 [2022-01-11 06:17:24,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 617 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16032 states. [2022-01-11 06:17:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16032 to 8090. [2022-01-11 06:17:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8089 states have (on average 1.5354184695265174) internal successors, (12420), 8089 states have internal predecessors, (12420), 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) [2022-01-11 06:17:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 12420 transitions. [2022-01-11 06:17:24,650 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 12420 transitions. Word has length 76 [2022-01-11 06:17:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:24,650 INFO L470 AbstractCegarLoop]: Abstraction has 8090 states and 12420 transitions. [2022-01-11 06:17:24,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2022-01-11 06:17:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 12420 transitions. [2022-01-11 06:17:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:17:24,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:24,653 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] [2022-01-11 06:17:24,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:17:24,654 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1013610811, now seen corresponding path program 1 times [2022-01-11 06:17:24,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:24,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718655532] [2022-01-11 06:17:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:24,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:24,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:24,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718655532] [2022-01-11 06:17:24,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718655532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:24,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:24,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:24,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041095156] [2022-01-11 06:17:24,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:24,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:24,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:24,716 INFO L87 Difference]: Start difference. First operand 8090 states and 12420 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:25,357 INFO L93 Difference]: Finished difference Result 18806 states and 28917 transitions. [2022-01-11 06:17:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:25,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 06:17:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:25,390 INFO L225 Difference]: With dead ends: 18806 [2022-01-11 06:17:25,390 INFO L226 Difference]: Without dead ends: 13540 [2022-01-11 06:17:25,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:25,403 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 497 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:25,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 517 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13540 states. [2022-01-11 06:17:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13540 to 8087. [2022-01-11 06:17:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8086 states have (on average 1.5351224338362601) internal successors, (12413), 8086 states have internal predecessors, (12413), 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) [2022-01-11 06:17:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 12413 transitions. [2022-01-11 06:17:25,914 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 12413 transitions. Word has length 77 [2022-01-11 06:17:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:25,915 INFO L470 AbstractCegarLoop]: Abstraction has 8087 states and 12413 transitions. [2022-01-11 06:17:25,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 12413 transitions. [2022-01-11 06:17:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:17:25,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:25,917 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] [2022-01-11 06:17:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:17:25,918 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1871247135, now seen corresponding path program 1 times [2022-01-11 06:17:25,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:25,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186660799] [2022-01-11 06:17:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:25,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:25,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186660799] [2022-01-11 06:17:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186660799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:25,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:25,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:25,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464606780] [2022-01-11 06:17:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:25,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:25,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:25,976 INFO L87 Difference]: Start difference. First operand 8087 states and 12413 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:26,231 INFO L93 Difference]: Finished difference Result 12139 states and 18662 transitions. [2022-01-11 06:17:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 06:17:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:26,246 INFO L225 Difference]: With dead ends: 12139 [2022-01-11 06:17:26,246 INFO L226 Difference]: Without dead ends: 6868 [2022-01-11 06:17:26,254 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 [2022-01-11 06:17:26,256 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 47 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:26,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 673 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2022-01-11 06:17:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6868. [2022-01-11 06:17:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6868 states, 6867 states have (on average 1.5334207077326343) internal successors, (10530), 6867 states have internal predecessors, (10530), 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) [2022-01-11 06:17:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 10530 transitions. [2022-01-11 06:17:26,578 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 10530 transitions. Word has length 77 [2022-01-11 06:17:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:26,578 INFO L470 AbstractCegarLoop]: Abstraction has 6868 states and 10530 transitions. [2022-01-11 06:17:26,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 10530 transitions. [2022-01-11 06:17:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:17:26,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:26,580 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] [2022-01-11 06:17:26,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:17:26,581 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:26,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash 745807334, now seen corresponding path program 1 times [2022-01-11 06:17:26,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:26,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018391486] [2022-01-11 06:17:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:26,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:26,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:26,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018391486] [2022-01-11 06:17:26,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018391486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:26,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:26,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:17:26,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063313297] [2022-01-11 06:17:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:26,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:17:26,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:17:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:26,669 INFO L87 Difference]: Start difference. First operand 6868 states and 10530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-01-11 06:17:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:27,085 INFO L93 Difference]: Finished difference Result 16262 states and 24939 transitions. [2022-01-11 06:17:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:17:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-11 06:17:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:27,113 INFO L225 Difference]: With dead ends: 16262 [2022-01-11 06:17:27,114 INFO L226 Difference]: Without dead ends: 10924 [2022-01-11 06:17:27,120 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 [2022-01-11 06:17:27,120 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 521 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:27,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 817 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2022-01-11 06:17:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 7048. [2022-01-11 06:17:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 7047 states have (on average 1.5223499361430395) internal successors, (10728), 7047 states have internal predecessors, (10728), 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) [2022-01-11 06:17:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 10728 transitions. [2022-01-11 06:17:27,443 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 10728 transitions. Word has length 77 [2022-01-11 06:17:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:27,444 INFO L470 AbstractCegarLoop]: Abstraction has 7048 states and 10728 transitions. [2022-01-11 06:17:27,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2022-01-11 06:17:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 10728 transitions. [2022-01-11 06:17:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:17:27,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:27,447 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] [2022-01-11 06:17:27,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:17:27,447 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -111828990, now seen corresponding path program 1 times [2022-01-11 06:17:27,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:27,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135157682] [2022-01-11 06:17:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:27,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:27,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135157682] [2022-01-11 06:17:27,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135157682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:27,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:27,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:27,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512166163] [2022-01-11 06:17:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:27,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:27,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:27,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:27,515 INFO L87 Difference]: Start difference. First operand 7048 states and 10728 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:27,789 INFO L93 Difference]: Finished difference Result 13049 states and 19848 transitions. [2022-01-11 06:17:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:27,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-11 06:17:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:27,800 INFO L225 Difference]: With dead ends: 13049 [2022-01-11 06:17:27,801 INFO L226 Difference]: Without dead ends: 6044 [2022-01-11 06:17:27,809 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 [2022-01-11 06:17:27,810 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 45 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 667 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 [2022-01-11 06:17:27,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 667 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2022-01-11 06:17:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 6044. [2022-01-11 06:17:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 6043 states have (on average 1.5187820618897898) internal successors, (9178), 6043 states have internal predecessors, (9178), 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) [2022-01-11 06:17:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 9178 transitions. [2022-01-11 06:17:28,137 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 9178 transitions. Word has length 77 [2022-01-11 06:17:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:28,137 INFO L470 AbstractCegarLoop]: Abstraction has 6044 states and 9178 transitions. [2022-01-11 06:17:28,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-01-11 06:17:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 9178 transitions. [2022-01-11 06:17:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:17:28,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:28,140 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] [2022-01-11 06:17:28,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:17:28,141 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash -718264445, now seen corresponding path program 1 times [2022-01-11 06:17:28,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:28,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798145119] [2022-01-11 06:17:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:28,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:28,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:28,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798145119] [2022-01-11 06:17:28,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798145119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:28,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:28,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:28,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042691421] [2022-01-11 06:17:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:28,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:28,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:28,210 INFO L87 Difference]: Start difference. First operand 6044 states and 9178 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) [2022-01-11 06:17:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:28,548 INFO L93 Difference]: Finished difference Result 11488 states and 17668 transitions. [2022-01-11 06:17:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:28,549 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 [2022-01-11 06:17:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:28,566 INFO L225 Difference]: With dead ends: 11488 [2022-01-11 06:17:28,566 INFO L226 Difference]: Without dead ends: 7664 [2022-01-11 06:17:28,576 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 [2022-01-11 06:17:28,577 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 113 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 482 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 [2022-01-11 06:17:28,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 482 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2022-01-11 06:17:28,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 7662. [2022-01-11 06:17:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.521994517686986) internal successors, (11660), 7661 states have internal predecessors, (11660), 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) [2022-01-11 06:17:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 11660 transitions. [2022-01-11 06:17:29,043 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 11660 transitions. Word has length 78 [2022-01-11 06:17:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:29,043 INFO L470 AbstractCegarLoop]: Abstraction has 7662 states and 11660 transitions. [2022-01-11 06:17:29,043 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) [2022-01-11 06:17:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 11660 transitions. [2022-01-11 06:17:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:17:29,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:29,045 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] [2022-01-11 06:17:29,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:17:29,046 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:29,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1917460409, now seen corresponding path program 1 times [2022-01-11 06:17:29,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:29,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016905686] [2022-01-11 06:17:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:29,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:29,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:29,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016905686] [2022-01-11 06:17:29,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016905686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:29,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:29,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:29,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804540693] [2022-01-11 06:17:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:29,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:29,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:29,087 INFO L87 Difference]: Start difference. First operand 7662 states and 11660 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-01-11 06:17:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:29,423 INFO L93 Difference]: Finished difference Result 14302 states and 21768 transitions. [2022-01-11 06:17:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:29,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-01-11 06:17:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:29,440 INFO L225 Difference]: With dead ends: 14302 [2022-01-11 06:17:29,440 INFO L226 Difference]: Without dead ends: 10573 [2022-01-11 06:17:29,447 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 [2022-01-11 06:17:29,448 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 191 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 518 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 [2022-01-11 06:17:29,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2022-01-11 06:17:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 7662. [2022-01-11 06:17:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7661 states have (on average 1.5217334551625115) internal successors, (11658), 7661 states have internal predecessors, (11658), 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) [2022-01-11 06:17:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 11658 transitions. [2022-01-11 06:17:29,730 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 11658 transitions. Word has length 79 [2022-01-11 06:17:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:29,731 INFO L470 AbstractCegarLoop]: Abstraction has 7662 states and 11658 transitions. [2022-01-11 06:17:29,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-01-11 06:17:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 11658 transitions. [2022-01-11 06:17:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:17:29,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:29,733 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] [2022-01-11 06:17:29,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:17:29,733 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1051067373, now seen corresponding path program 1 times [2022-01-11 06:17:29,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040752719] [2022-01-11 06:17:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:29,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:29,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:29,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040752719] [2022-01-11 06:17:29,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040752719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:29,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:29,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:29,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194221057] [2022-01-11 06:17:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:29,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:29,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:29,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:29,868 INFO L87 Difference]: Start difference. First operand 7662 states and 11658 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) [2022-01-11 06:17:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:30,530 INFO L93 Difference]: Finished difference Result 21066 states and 32420 transitions. [2022-01-11 06:17:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:30,531 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 [2022-01-11 06:17:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:30,558 INFO L225 Difference]: With dead ends: 21066 [2022-01-11 06:17:30,558 INFO L226 Difference]: Without dead ends: 13884 [2022-01-11 06:17:30,572 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 [2022-01-11 06:17:30,574 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:30,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2022-01-11 06:17:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 13754. [2022-01-11 06:17:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13754 states, 13753 states have (on average 1.5209772413291645) internal successors, (20918), 13753 states have internal predecessors, (20918), 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) [2022-01-11 06:17:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 20918 transitions. [2022-01-11 06:17:31,317 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 20918 transitions. Word has length 80 [2022-01-11 06:17:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:31,318 INFO L470 AbstractCegarLoop]: Abstraction has 13754 states and 20918 transitions. [2022-01-11 06:17:31,318 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) [2022-01-11 06:17:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 20918 transitions. [2022-01-11 06:17:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:17:31,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:31,320 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] [2022-01-11 06:17:31,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:17:31,321 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 517858466, now seen corresponding path program 1 times [2022-01-11 06:17:31,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:31,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784515959] [2022-01-11 06:17:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:31,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:31,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784515959] [2022-01-11 06:17:31,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784515959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:31,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:31,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:31,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429034476] [2022-01-11 06:17:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:31,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:31,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:31,391 INFO L87 Difference]: Start difference. First operand 13754 states and 20918 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-01-11 06:17:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:32,290 INFO L93 Difference]: Finished difference Result 35031 states and 53390 transitions. [2022-01-11 06:17:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 [2022-01-11 06:17:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:32,317 INFO L225 Difference]: With dead ends: 35031 [2022-01-11 06:17:32,317 INFO L226 Difference]: Without dead ends: 21757 [2022-01-11 06:17:32,326 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 [2022-01-11 06:17:32,327 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 129 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 557 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 [2022-01-11 06:17:32,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 557 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2022-01-11 06:17:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21755. [2022-01-11 06:17:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21755 states, 21754 states have (on average 1.5028040820079065) internal successors, (32692), 21754 states have internal predecessors, (32692), 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) [2022-01-11 06:17:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21755 states to 21755 states and 32692 transitions. [2022-01-11 06:17:33,301 INFO L78 Accepts]: Start accepts. Automaton has 21755 states and 32692 transitions. Word has length 82 [2022-01-11 06:17:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:33,301 INFO L470 AbstractCegarLoop]: Abstraction has 21755 states and 32692 transitions. [2022-01-11 06:17:33,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-01-11 06:17:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 21755 states and 32692 transitions. [2022-01-11 06:17:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:17:33,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:33,304 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] [2022-01-11 06:17:33,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:17:33,304 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1904463198, now seen corresponding path program 1 times [2022-01-11 06:17:33,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069583960] [2022-01-11 06:17:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:33,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:33,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:33,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069583960] [2022-01-11 06:17:33,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069583960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:33,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:33,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:33,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747790960] [2022-01-11 06:17:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:33,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:33,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:33,374 INFO L87 Difference]: Start difference. First operand 21755 states and 32692 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-01-11 06:17:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:34,698 INFO L93 Difference]: Finished difference Result 55339 states and 83258 transitions. [2022-01-11 06:17:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 [2022-01-11 06:17:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:34,754 INFO L225 Difference]: With dead ends: 55339 [2022-01-11 06:17:34,754 INFO L226 Difference]: Without dead ends: 34217 [2022-01-11 06:17:34,779 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 [2022-01-11 06:17:34,779 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 132 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 586 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 [2022-01-11 06:17:34,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 586 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2022-01-11 06:17:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 34215. [2022-01-11 06:17:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34215 states, 34214 states have (on average 1.4833693809551645) internal successors, (50752), 34214 states have internal predecessors, (50752), 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) [2022-01-11 06:17:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34215 states to 34215 states and 50752 transitions. [2022-01-11 06:17:36,292 INFO L78 Accepts]: Start accepts. Automaton has 34215 states and 50752 transitions. Word has length 82 [2022-01-11 06:17:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:36,292 INFO L470 AbstractCegarLoop]: Abstraction has 34215 states and 50752 transitions. [2022-01-11 06:17:36,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2022-01-11 06:17:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 34215 states and 50752 transitions. [2022-01-11 06:17:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:17:36,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:36,296 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] [2022-01-11 06:17:36,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:17:36,296 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1936861317, now seen corresponding path program 1 times [2022-01-11 06:17:36,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:36,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433527630] [2022-01-11 06:17:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:36,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:36,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:36,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433527630] [2022-01-11 06:17:36,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433527630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:36,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:36,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:36,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792929722] [2022-01-11 06:17:36,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:36,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:36,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:36,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:36,389 INFO L87 Difference]: Start difference. First operand 34215 states and 50752 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2022-01-11 06:17:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:38,089 INFO L93 Difference]: Finished difference Result 61708 states and 91520 transitions. [2022-01-11 06:17:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 [2022-01-11 06:17:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:38,146 INFO L225 Difference]: With dead ends: 61708 [2022-01-11 06:17:38,146 INFO L226 Difference]: Without dead ends: 36298 [2022-01-11 06:17:38,165 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 [2022-01-11 06:17:38,166 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 487 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:38,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 411 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36298 states. [2022-01-11 06:17:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36298 to 34284. [2022-01-11 06:17:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34284 states, 34283 states have (on average 1.4826590438409708) internal successors, (50830), 34283 states have internal predecessors, (50830), 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) [2022-01-11 06:17:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34284 states to 34284 states and 50830 transitions. [2022-01-11 06:17:39,883 INFO L78 Accepts]: Start accepts. Automaton has 34284 states and 50830 transitions. Word has length 83 [2022-01-11 06:17:39,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:39,884 INFO L470 AbstractCegarLoop]: Abstraction has 34284 states and 50830 transitions. [2022-01-11 06:17:39,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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) [2022-01-11 06:17:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 34284 states and 50830 transitions. [2022-01-11 06:17:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:17:39,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:39,888 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] [2022-01-11 06:17:39,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:17:39,888 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2032820506, now seen corresponding path program 1 times [2022-01-11 06:17:39,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:39,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936548604] [2022-01-11 06:17:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:39,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:39,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:39,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936548604] [2022-01-11 06:17:39,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936548604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:39,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:39,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:39,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931994798] [2022-01-11 06:17:39,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:39,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:39,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:39,954 INFO L87 Difference]: Start difference. First operand 34284 states and 50830 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) [2022-01-11 06:17:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:42,142 INFO L93 Difference]: Finished difference Result 77480 states and 115328 transitions. [2022-01-11 06:17:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:42,143 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 [2022-01-11 06:17:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:42,225 INFO L225 Difference]: With dead ends: 77480 [2022-01-11 06:17:42,225 INFO L226 Difference]: Without dead ends: 48534 [2022-01-11 06:17:42,255 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 [2022-01-11 06:17:42,255 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 112 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 410 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 [2022-01-11 06:17:42,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 410 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48534 states. [2022-01-11 06:17:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48534 to 46420. [2022-01-11 06:17:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46420 states, 46419 states have (on average 1.4703892802516212) internal successors, (68254), 46419 states have internal predecessors, (68254), 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) [2022-01-11 06:17:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46420 states to 46420 states and 68254 transitions. [2022-01-11 06:17:44,769 INFO L78 Accepts]: Start accepts. Automaton has 46420 states and 68254 transitions. Word has length 83 [2022-01-11 06:17:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:44,770 INFO L470 AbstractCegarLoop]: Abstraction has 46420 states and 68254 transitions. [2022-01-11 06:17:44,770 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) [2022-01-11 06:17:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 46420 states and 68254 transitions. [2022-01-11 06:17:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:17:44,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:44,773 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] [2022-01-11 06:17:44,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:17:44,773 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:44,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1353527827, now seen corresponding path program 1 times [2022-01-11 06:17:44,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:44,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109834435] [2022-01-11 06:17:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:44,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:44,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109834435] [2022-01-11 06:17:44,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109834435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:44,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:44,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:17:44,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913508232] [2022-01-11 06:17:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:44,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:17:44,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:17:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:17:44,816 INFO L87 Difference]: Start difference. First operand 46420 states and 68254 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-01-11 06:17:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:48,761 INFO L93 Difference]: Finished difference Result 138550 states and 203936 transitions. [2022-01-11 06:17:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:17:48,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 [2022-01-11 06:17:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:48,919 INFO L225 Difference]: With dead ends: 138550 [2022-01-11 06:17:48,920 INFO L226 Difference]: Without dead ends: 92621 [2022-01-11 06:17:48,957 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 [2022-01-11 06:17:48,957 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 181 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 593 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 [2022-01-11 06:17:48,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 593 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92621 states. [2022-01-11 06:17:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92621 to 46436. [2022-01-11 06:17:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46436 states, 46435 states have (on average 1.4702271993108647) internal successors, (68270), 46435 states have internal predecessors, (68270), 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) [2022-01-11 06:17:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46436 states to 46436 states and 68270 transitions. [2022-01-11 06:17:51,764 INFO L78 Accepts]: Start accepts. Automaton has 46436 states and 68270 transitions. Word has length 84 [2022-01-11 06:17:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:51,765 INFO L470 AbstractCegarLoop]: Abstraction has 46436 states and 68270 transitions. [2022-01-11 06:17:51,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-01-11 06:17:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 46436 states and 68270 transitions. [2022-01-11 06:17:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 06:17:51,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:51,768 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, 1] [2022-01-11 06:17:51,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:17:51,768 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1804302966, now seen corresponding path program 1 times [2022-01-11 06:17:51,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:51,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360147909] [2022-01-11 06:17:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:51,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:51,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360147909] [2022-01-11 06:17:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360147909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:51,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:51,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:17:51,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454705385] [2022-01-11 06:17:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:17:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:17:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:51,870 INFO L87 Difference]: Start difference. First operand 46436 states and 68270 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2022-01-11 06:17:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:54,351 INFO L93 Difference]: Finished difference Result 95016 states and 139607 transitions. [2022-01-11 06:17:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:54,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2022-01-11 06:17:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:54,427 INFO L225 Difference]: With dead ends: 95016 [2022-01-11 06:17:54,427 INFO L226 Difference]: Without dead ends: 48688 [2022-01-11 06:17:54,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:17:54,454 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 376 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:17:54,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48688 states. [2022-01-11 06:17:56,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48688 to 46646. [2022-01-11 06:17:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46646 states, 46645 states have (on average 1.4678314931932683) internal successors, (68467), 46645 states have internal predecessors, (68467), 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) [2022-01-11 06:17:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46646 states to 46646 states and 68467 transitions. [2022-01-11 06:17:57,042 INFO L78 Accepts]: Start accepts. Automaton has 46646 states and 68467 transitions. Word has length 85 [2022-01-11 06:17:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:17:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 46646 states and 68467 transitions. [2022-01-11 06:17:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2022-01-11 06:17:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 46646 states and 68467 transitions. [2022-01-11 06:17:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 06:17:57,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:17:57,045 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, 1] [2022-01-11 06:17:57,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 06:17:57,046 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:17:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:17:57,046 INFO L85 PathProgramCache]: Analyzing trace with hash 844077478, now seen corresponding path program 1 times [2022-01-11 06:17:57,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:17:57,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847166291] [2022-01-11 06:17:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:17:57,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:17:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:17:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:17:57,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:17:57,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847166291] [2022-01-11 06:17:57,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847166291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:17:57,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:17:57,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:17:57,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155994115] [2022-01-11 06:17:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:17:57,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:17:57,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:17:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:17:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:17:57,113 INFO L87 Difference]: Start difference. First operand 46646 states and 68467 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2022-01-11 06:17:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:17:59,409 INFO L93 Difference]: Finished difference Result 81425 states and 119523 transitions. [2022-01-11 06:17:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:17:59,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2022-01-11 06:17:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:17:59,462 INFO L225 Difference]: With dead ends: 81425 [2022-01-11 06:17:59,463 INFO L226 Difference]: Without dead ends: 42045 [2022-01-11 06:17:59,484 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 [2022-01-11 06:17:59,485 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 23 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 643 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 [2022-01-11 06:17:59,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 643 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:17:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42045 states. [2022-01-11 06:18:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42045 to 42045. [2022-01-11 06:18:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42045 states, 42044 states have (on average 1.4655361050328228) internal successors, (61617), 42044 states have internal predecessors, (61617), 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) [2022-01-11 06:18:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42045 states to 42045 states and 61617 transitions. [2022-01-11 06:18:01,727 INFO L78 Accepts]: Start accepts. Automaton has 42045 states and 61617 transitions. Word has length 85 [2022-01-11 06:18:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:18:01,727 INFO L470 AbstractCegarLoop]: Abstraction has 42045 states and 61617 transitions. [2022-01-11 06:18:01,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2022-01-11 06:18:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 42045 states and 61617 transitions. [2022-01-11 06:18:01,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 06:18:01,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:18:01,730 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, 1, 1] [2022-01-11 06:18:01,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 06:18:01,730 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:18:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:18:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1154536608, now seen corresponding path program 1 times [2022-01-11 06:18:01,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:18:01,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226195203] [2022-01-11 06:18:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:18:01,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:18:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:18:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:18:01,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:18:01,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226195203] [2022-01-11 06:18:01,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226195203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:18:01,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:18:01,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:18:01,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323031627] [2022-01-11 06:18:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:18:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:18:01,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:18:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:18:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:18:01,800 INFO L87 Difference]: Start difference. First operand 42045 states and 61617 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-11 06:18:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:18:04,556 INFO L93 Difference]: Finished difference Result 80645 states and 119205 transitions. [2022-01-11 06:18:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:18:04,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2022-01-11 06:18:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:18:04,645 INFO L225 Difference]: With dead ends: 80645 [2022-01-11 06:18:04,645 INFO L226 Difference]: Without dead ends: 52801 [2022-01-11 06:18:04,660 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 [2022-01-11 06:18:04,661 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 104 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 460 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 [2022-01-11 06:18:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 460 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:18:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52801 states. [2022-01-11 06:18:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52801 to 52799. [2022-01-11 06:18:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52799 states, 52798 states have (on average 1.4654911170877685) internal successors, (77375), 52798 states have internal predecessors, (77375), 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) [2022-01-11 06:18:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52799 states to 52799 states and 77375 transitions. [2022-01-11 06:18:07,631 INFO L78 Accepts]: Start accepts. Automaton has 52799 states and 77375 transitions. Word has length 86 [2022-01-11 06:18:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:18:07,631 INFO L470 AbstractCegarLoop]: Abstraction has 52799 states and 77375 transitions. [2022-01-11 06:18:07,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-11 06:18:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 52799 states and 77375 transitions. [2022-01-11 06:18:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 06:18:07,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:18:07,633 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, 1, 1] [2022-01-11 06:18:07,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 06:18:07,633 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:18:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:18:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1736496913, now seen corresponding path program 1 times [2022-01-11 06:18:07,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:18:07,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930203133] [2022-01-11 06:18:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:18:07,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:18:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:18:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:18:07,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:18:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930203133] [2022-01-11 06:18:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930203133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:18:07,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:18:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:18:07,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629239106] [2022-01-11 06:18:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:18:07,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:18:07,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:18:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:18:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:18:07,679 INFO L87 Difference]: Start difference. First operand 52799 states and 77375 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-11 06:18:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:18:10,930 INFO L93 Difference]: Finished difference Result 96888 states and 141894 transitions. [2022-01-11 06:18:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:18:10,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2022-01-11 06:18:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:18:11,056 INFO L225 Difference]: With dead ends: 96888 [2022-01-11 06:18:11,056 INFO L226 Difference]: Without dead ends: 67764 [2022-01-11 06:18:11,084 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 [2022-01-11 06:18:11,085 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 178 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 417 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 [2022-01-11 06:18:11,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 417 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:18:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67764 states. [2022-01-11 06:18:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67764 to 52799. [2022-01-11 06:18:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52799 states, 52798 states have (on average 1.4653964165309292) internal successors, (77370), 52798 states have internal predecessors, (77370), 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) [2022-01-11 06:18:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52799 states to 52799 states and 77370 transitions. [2022-01-11 06:18:14,259 INFO L78 Accepts]: Start accepts. Automaton has 52799 states and 77370 transitions. Word has length 86 [2022-01-11 06:18:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:18:14,259 INFO L470 AbstractCegarLoop]: Abstraction has 52799 states and 77370 transitions. [2022-01-11 06:18:14,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-01-11 06:18:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52799 states and 77370 transitions. [2022-01-11 06:18:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 06:18:14,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:18:14,262 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, 1, 1, 1] [2022-01-11 06:18:14,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 06:18:14,262 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:18:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:18:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1877365003, now seen corresponding path program 1 times [2022-01-11 06:18:14,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:18:14,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737679127] [2022-01-11 06:18:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:18:14,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:18:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:18:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:18:14,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:18:14,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737679127] [2022-01-11 06:18:14,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737679127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:18:14,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:18:14,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:18:14,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934981784] [2022-01-11 06:18:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:18:14,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:18:14,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:18:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:18:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:18:14,469 INFO L87 Difference]: Start difference. First operand 52799 states and 77370 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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)