/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:29:38,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:29:38,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:29:38,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:29:38,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:29:38,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:29:38,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:29:38,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:29:38,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:29:38,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:29:38,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:29:38,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:29:38,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:29:38,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:29:38,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:29:38,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:29:38,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:29:38,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:29:38,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:29:38,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:29:38,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:29:38,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:29:38,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:29:38,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:29:38,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:29:38,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:29:38,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:29:38,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:29:38,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:29:38,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:29:38,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:29:38,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:29:38,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:29:38,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:29:38,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:29:38,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:29:38,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:29:38,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:29:38,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:29:38,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:29:38,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:29:38,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:29:38,261 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:29:38,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:29:38,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:29:38,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:29:38,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:29:38,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:29:38,263 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:29:38,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:29:38,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:29:38,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:29:38,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:29:38,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:29:38,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:29:38,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:29:38,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:29:38,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:29:38,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:29:38,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:29:38,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:29:38,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:29:38,272 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:29:38,272 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:29:38,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:29:38,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:29:38,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:29:38,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:29:38,580 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:29:38,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.05.cil.c [2022-01-10 18:29:38,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f019478eb/b0e48a7f1ff7401cbd51f609fef0e272/FLAGd68d03301 [2022-01-10 18:29:39,004 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:29:39,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c [2022-01-10 18:29:39,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f019478eb/b0e48a7f1ff7401cbd51f609fef0e272/FLAGd68d03301 [2022-01-10 18:29:39,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f019478eb/b0e48a7f1ff7401cbd51f609fef0e272 [2022-01-10 18:29:39,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:29:39,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:29:39,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:29:39,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:29:39,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:29:39,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f91db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39, skipping insertion in model container [2022-01-10 18:29:39,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:29:39,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:29:39,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c[706,719] [2022-01-10 18:29:39,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:29:39,678 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:29:39,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.05.cil.c[706,719] [2022-01-10 18:29:39,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:29:39,734 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:29:39,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39 WrapperNode [2022-01-10 18:29:39,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:29:39,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:29:39,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:29:39,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:29:39,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,840 INFO L137 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 40, calls inlined = 86, statements flattened = 1229 [2022-01-10 18:29:39,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:29:39,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:29:39,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:29:39,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:29:39,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:29:39,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:29:39,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:29:39,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:29:39,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (1/1) ... [2022-01-10 18:29:39,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:29:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:29:39,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:29:39,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:29:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:29:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:29:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:29:40,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:29:40,085 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:29:40,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:29:40,878 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:29:40,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:29:40,899 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 18:29:40,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:40 BoogieIcfgContainer [2022-01-10 18:29:40,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:29:40,919 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:29:40,920 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:29:40,921 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:29:40,931 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:40" (1/1) ... [2022-01-10 18:29:41,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:29:41 BasicIcfg [2022-01-10 18:29:41,170 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:29:41,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:29:41,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:29:41,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:29:41,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:29:39" (1/4) ... [2022-01-10 18:29:41,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d5a745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:41, skipping insertion in model container [2022-01-10 18:29:41,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:39" (2/4) ... [2022-01-10 18:29:41,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d5a745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:29:41, skipping insertion in model container [2022-01-10 18:29:41,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:29:40" (3/4) ... [2022-01-10 18:29:41,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d5a745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:29:41, skipping insertion in model container [2022-01-10 18:29:41,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:29:41" (4/4) ... [2022-01-10 18:29:41,177 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.cTransformedIcfg [2022-01-10 18:29:41,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:29:41,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:29:41,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:29:41,226 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:29:41,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:29:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 506 states, 504 states have (on average 1.5357142857142858) internal successors, (774), 505 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:41,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:41,257 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, 1, 1, 1] [2022-01-10 18:29:41,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2042016486, now seen corresponding path program 1 times [2022-01-10 18:29:41,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:41,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262224971] [2022-01-10 18:29:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:41,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:41,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262224971] [2022-01-10 18:29:41,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262224971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:41,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:41,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:41,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962579364] [2022-01-10 18:29:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:41,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:41,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:41,552 INFO L87 Difference]: Start difference. First operand has 506 states, 504 states have (on average 1.5357142857142858) internal successors, (774), 505 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:41,719 INFO L93 Difference]: Finished difference Result 1383 states and 2115 transitions. [2022-01-10 18:29:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:41,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:41,744 INFO L225 Difference]: With dead ends: 1383 [2022-01-10 18:29:41,744 INFO L226 Difference]: Without dead ends: 881 [2022-01-10 18:29:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:41,752 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 668 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:41,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1350 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:29:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-01-10 18:29:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 878. [2022-01-10 18:29:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.483466362599772) internal successors, (1301), 877 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1301 transitions. [2022-01-10 18:29:41,845 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1301 transitions. Word has length 90 [2022-01-10 18:29:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:41,845 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1301 transitions. [2022-01-10 18:29:41,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1301 transitions. [2022-01-10 18:29:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:41,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:41,848 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, 1, 1, 1] [2022-01-10 18:29:41,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:29:41,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1383826331, now seen corresponding path program 1 times [2022-01-10 18:29:41,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:41,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301845869] [2022-01-10 18:29:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:41,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:41,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:41,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301845869] [2022-01-10 18:29:41,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301845869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:41,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:41,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:41,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696725954] [2022-01-10 18:29:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:41,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:41,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:41,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:41,926 INFO L87 Difference]: Start difference. First operand 878 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:41,999 INFO L93 Difference]: Finished difference Result 1743 states and 2582 transitions. [2022-01-10 18:29:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:42,003 INFO L225 Difference]: With dead ends: 1743 [2022-01-10 18:29:42,004 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:42,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,011 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 730 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:42,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 737 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4743443557582667) internal successors, (1293), 877 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1293 transitions. [2022-01-10 18:29:42,070 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1293 transitions. Word has length 90 [2022-01-10 18:29:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:42,070 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1293 transitions. [2022-01-10 18:29:42,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1293 transitions. [2022-01-10 18:29:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:42,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:42,079 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, 1, 1, 1] [2022-01-10 18:29:42,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:29:42,082 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1814659289, now seen corresponding path program 1 times [2022-01-10 18:29:42,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:42,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590929862] [2022-01-10 18:29:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:42,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:42,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:42,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590929862] [2022-01-10 18:29:42,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590929862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:42,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:42,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:42,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033185656] [2022-01-10 18:29:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:42,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:42,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,209 INFO L87 Difference]: Start difference. First operand 878 states and 1293 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:42,248 INFO L93 Difference]: Finished difference Result 1742 states and 2565 transitions. [2022-01-10 18:29:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:42,252 INFO L225 Difference]: With dead ends: 1742 [2022-01-10 18:29:42,252 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:42,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,260 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 724 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:42,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 732 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4652223489167617) internal successors, (1285), 877 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1285 transitions. [2022-01-10 18:29:42,294 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1285 transitions. Word has length 90 [2022-01-10 18:29:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:42,295 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1285 transitions. [2022-01-10 18:29:42,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1285 transitions. [2022-01-10 18:29:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:42,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:42,297 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, 1, 1, 1] [2022-01-10 18:29:42,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:29:42,297 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:42,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1773673509, now seen corresponding path program 1 times [2022-01-10 18:29:42,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:42,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065283756] [2022-01-10 18:29:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:42,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:42,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:42,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065283756] [2022-01-10 18:29:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065283756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:42,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329943020] [2022-01-10 18:29:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:42,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,381 INFO L87 Difference]: Start difference. First operand 878 states and 1285 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:42,438 INFO L93 Difference]: Finished difference Result 1741 states and 2548 transitions. [2022-01-10 18:29:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:42,443 INFO L225 Difference]: With dead ends: 1741 [2022-01-10 18:29:42,443 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:42,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,451 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 718 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:42,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 727 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4561003420752565) internal successors, (1277), 877 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1277 transitions. [2022-01-10 18:29:42,507 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1277 transitions. Word has length 90 [2022-01-10 18:29:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:42,507 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1277 transitions. [2022-01-10 18:29:42,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1277 transitions. [2022-01-10 18:29:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:42,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:42,513 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, 1, 1, 1] [2022-01-10 18:29:42,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:29:42,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash -919594855, now seen corresponding path program 1 times [2022-01-10 18:29:42,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:42,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152797061] [2022-01-10 18:29:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:42,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:42,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:42,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152797061] [2022-01-10 18:29:42,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152797061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:42,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:42,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:42,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553098939] [2022-01-10 18:29:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:42,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:42,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,606 INFO L87 Difference]: Start difference. First operand 878 states and 1277 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:42,657 INFO L93 Difference]: Finished difference Result 1740 states and 2531 transitions. [2022-01-10 18:29:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:42,661 INFO L225 Difference]: With dead ends: 1740 [2022-01-10 18:29:42,662 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:42,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,664 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 712 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:42,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 722 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4469783352337515) internal successors, (1269), 877 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1269 transitions. [2022-01-10 18:29:42,764 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1269 transitions. Word has length 90 [2022-01-10 18:29:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:42,766 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1269 transitions. [2022-01-10 18:29:42,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1269 transitions. [2022-01-10 18:29:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:42,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:42,771 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, 1, 1, 1] [2022-01-10 18:29:42,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:29:42,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:42,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 909071387, now seen corresponding path program 1 times [2022-01-10 18:29:42,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:42,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760673884] [2022-01-10 18:29:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:42,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:42,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:42,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760673884] [2022-01-10 18:29:42,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760673884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:42,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:42,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:42,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609035669] [2022-01-10 18:29:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:42,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:42,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,834 INFO L87 Difference]: Start difference. First operand 878 states and 1269 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:42,892 INFO L93 Difference]: Finished difference Result 1739 states and 2514 transitions. [2022-01-10 18:29:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:42,896 INFO L225 Difference]: With dead ends: 1739 [2022-01-10 18:29:42,896 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:42,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,899 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 706 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:42,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 717 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4378563283922463) internal successors, (1261), 877 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1261 transitions. [2022-01-10 18:29:42,948 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1261 transitions. Word has length 90 [2022-01-10 18:29:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:42,948 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1261 transitions. [2022-01-10 18:29:42,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1261 transitions. [2022-01-10 18:29:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:42,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:42,949 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, 1, 1, 1] [2022-01-10 18:29:42,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:29:42,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:42,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1383702617, now seen corresponding path program 1 times [2022-01-10 18:29:42,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:42,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580639722] [2022-01-10 18:29:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:42,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:42,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:42,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580639722] [2022-01-10 18:29:42,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580639722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:42,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:42,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:42,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595390242] [2022-01-10 18:29:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:42,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:42,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:42,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:42,994 INFO L87 Difference]: Start difference. First operand 878 states and 1261 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:43,065 INFO L93 Difference]: Finished difference Result 1738 states and 2497 transitions. [2022-01-10 18:29:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:43,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:43,069 INFO L225 Difference]: With dead ends: 1738 [2022-01-10 18:29:43,069 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:43,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,072 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 631 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:43,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 756 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.4150513112884835) internal successors, (1241), 877 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1241 transitions. [2022-01-10 18:29:43,119 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1241 transitions. Word has length 90 [2022-01-10 18:29:43,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:43,121 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1241 transitions. [2022-01-10 18:29:43,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1241 transitions. [2022-01-10 18:29:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:43,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:43,122 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, 1, 1, 1] [2022-01-10 18:29:43,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:29:43,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1649028005, now seen corresponding path program 1 times [2022-01-10 18:29:43,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:43,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792540305] [2022-01-10 18:29:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:43,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:43,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792540305] [2022-01-10 18:29:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792540305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:43,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:43,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:43,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500660095] [2022-01-10 18:29:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:43,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:43,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,172 INFO L87 Difference]: Start difference. First operand 878 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:43,263 INFO L93 Difference]: Finished difference Result 1737 states and 2456 transitions. [2022-01-10 18:29:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:43,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:43,267 INFO L225 Difference]: With dead ends: 1737 [2022-01-10 18:29:43,267 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:43,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,269 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 619 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:43,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 743 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3922462941847207) internal successors, (1221), 877 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1221 transitions. [2022-01-10 18:29:43,320 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1221 transitions. Word has length 90 [2022-01-10 18:29:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:43,321 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1221 transitions. [2022-01-10 18:29:43,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1221 transitions. [2022-01-10 18:29:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:43,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:43,322 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, 1, 1, 1] [2022-01-10 18:29:43,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:29:43,322 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2106317753, now seen corresponding path program 1 times [2022-01-10 18:29:43,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:43,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361183141] [2022-01-10 18:29:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:43,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:43,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:43,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361183141] [2022-01-10 18:29:43,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361183141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:43,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:43,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:43,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226146978] [2022-01-10 18:29:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:43,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:43,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:43,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,363 INFO L87 Difference]: Start difference. First operand 878 states and 1221 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:43,439 INFO L93 Difference]: Finished difference Result 1736 states and 2415 transitions. [2022-01-10 18:29:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:43,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:43,443 INFO L225 Difference]: With dead ends: 1736 [2022-01-10 18:29:43,444 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:43,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,447 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 607 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:43,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 730 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3694412770809579) internal successors, (1201), 877 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1201 transitions. [2022-01-10 18:29:43,503 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1201 transitions. Word has length 90 [2022-01-10 18:29:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:43,503 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1201 transitions. [2022-01-10 18:29:43,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1201 transitions. [2022-01-10 18:29:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:43,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:43,508 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, 1, 1, 1] [2022-01-10 18:29:43,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:29:43,509 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 503842298, now seen corresponding path program 1 times [2022-01-10 18:29:43,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:43,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767493490] [2022-01-10 18:29:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:43,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:43,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:43,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767493490] [2022-01-10 18:29:43,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767493490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:43,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:43,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:43,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823418899] [2022-01-10 18:29:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:43,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:43,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,564 INFO L87 Difference]: Start difference. First operand 878 states and 1201 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:43,640 INFO L93 Difference]: Finished difference Result 1735 states and 2374 transitions. [2022-01-10 18:29:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:43,644 INFO L225 Difference]: With dead ends: 1735 [2022-01-10 18:29:43,644 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:43,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,646 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 595 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:43,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 717 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.346636259977195) internal successors, (1181), 877 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1181 transitions. [2022-01-10 18:29:43,710 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1181 transitions. Word has length 90 [2022-01-10 18:29:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:43,711 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1181 transitions. [2022-01-10 18:29:43,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1181 transitions. [2022-01-10 18:29:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:43,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:43,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:43,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:29:43,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash -780535241, now seen corresponding path program 1 times [2022-01-10 18:29:43,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:43,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822588920] [2022-01-10 18:29:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:43,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:43,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:43,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822588920] [2022-01-10 18:29:43,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822588920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:43,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:43,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:43,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133660187] [2022-01-10 18:29:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:43,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:43,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:43,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,752 INFO L87 Difference]: Start difference. First operand 878 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:43,831 INFO L93 Difference]: Finished difference Result 1734 states and 2333 transitions. [2022-01-10 18:29:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:43,835 INFO L225 Difference]: With dead ends: 1734 [2022-01-10 18:29:43,835 INFO L226 Difference]: Without dead ends: 878 [2022-01-10 18:29:43,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:43,838 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 583 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 704 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-01-10 18:29:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2022-01-10 18:29:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3238312428734322) internal successors, (1161), 877 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1161 transitions. [2022-01-10 18:29:43,892 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1161 transitions. Word has length 90 [2022-01-10 18:29:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:43,892 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1161 transitions. [2022-01-10 18:29:43,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1161 transitions. [2022-01-10 18:29:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:43,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:43,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:43,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:29:43,894 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -880098440, now seen corresponding path program 1 times [2022-01-10 18:29:43,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:43,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107900579] [2022-01-10 18:29:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:43,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:43,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107900579] [2022-01-10 18:29:43,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107900579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:43,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:43,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:29:43,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435348869] [2022-01-10 18:29:43,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:43,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:29:43,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:29:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:29:43,961 INFO L87 Difference]: Start difference. First operand 878 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:44,173 INFO L93 Difference]: Finished difference Result 2228 states and 2972 transitions. [2022-01-10 18:29:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:29:44,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:44,179 INFO L225 Difference]: With dead ends: 2228 [2022-01-10 18:29:44,179 INFO L226 Difference]: Without dead ends: 1386 [2022-01-10 18:29:44,181 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 [2022-01-10 18:29:44,182 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1734 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:44,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 1814 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:29:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2022-01-10 18:29:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 884. [2022-01-10 18:29:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 1.3080407701019252) internal successors, (1155), 883 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1155 transitions. [2022-01-10 18:29:44,263 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1155 transitions. Word has length 90 [2022-01-10 18:29:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1155 transitions. [2022-01-10 18:29:44,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1155 transitions. [2022-01-10 18:29:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:29:44,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:44,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:29:44,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -249639815, now seen corresponding path program 1 times [2022-01-10 18:29:44,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588299788] [2022-01-10 18:29:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:44,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:44,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:44,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588299788] [2022-01-10 18:29:44,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588299788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:44,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:44,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:44,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917803764] [2022-01-10 18:29:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:44,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:44,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:44,315 INFO L87 Difference]: Start difference. First operand 884 states and 1155 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:44,456 INFO L93 Difference]: Finished difference Result 2516 states and 3270 transitions. [2022-01-10 18:29:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-01-10 18:29:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:44,464 INFO L225 Difference]: With dead ends: 2516 [2022-01-10 18:29:44,464 INFO L226 Difference]: Without dead ends: 1709 [2022-01-10 18:29:44,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:44,467 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 542 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:44,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1283 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-10 18:29:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1622. [2022-01-10 18:29:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 1.2911782850092535) internal successors, (2093), 1621 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2093 transitions. [2022-01-10 18:29:44,603 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2093 transitions. Word has length 90 [2022-01-10 18:29:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:44,604 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 2093 transitions. [2022-01-10 18:29:44,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2093 transitions. [2022-01-10 18:29:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:29:44,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:44,606 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, 1, 1, 1, 1] [2022-01-10 18:29:44,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:29:44,606 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -949779892, now seen corresponding path program 1 times [2022-01-10 18:29:44,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:44,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765002295] [2022-01-10 18:29:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:44,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:44,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:44,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765002295] [2022-01-10 18:29:44,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765002295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:44,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:44,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:44,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273633697] [2022-01-10 18:29:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:44,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:44,660 INFO L87 Difference]: Start difference. First operand 1622 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:44,864 INFO L93 Difference]: Finished difference Result 4486 states and 5777 transitions. [2022-01-10 18:29:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 18:29:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:44,877 INFO L225 Difference]: With dead ends: 4486 [2022-01-10 18:29:44,877 INFO L226 Difference]: Without dead ends: 3013 [2022-01-10 18:29:44,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:44,881 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 483 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:44,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 1503 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2022-01-10 18:29:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 3010. [2022-01-10 18:29:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3009 states have (on average 1.2808241940844134) internal successors, (3854), 3009 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3854 transitions. [2022-01-10 18:29:45,075 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3854 transitions. Word has length 91 [2022-01-10 18:29:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:45,076 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 3854 transitions. [2022-01-10 18:29:45,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3854 transitions. [2022-01-10 18:29:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 18:29:45,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:45,078 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, 1, 1, 1, 1] [2022-01-10 18:29:45,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:29:45,078 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 218416363, now seen corresponding path program 1 times [2022-01-10 18:29:45,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:45,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425012976] [2022-01-10 18:29:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:45,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:45,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425012976] [2022-01-10 18:29:45,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425012976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:45,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:45,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:45,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517748393] [2022-01-10 18:29:45,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:45,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:45,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:45,107 INFO L87 Difference]: Start difference. First operand 3010 states and 3854 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:45,260 INFO L93 Difference]: Finished difference Result 5729 states and 7354 transitions. [2022-01-10 18:29:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:45,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 18:29:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:45,272 INFO L225 Difference]: With dead ends: 5729 [2022-01-10 18:29:45,272 INFO L226 Difference]: Without dead ends: 2868 [2022-01-10 18:29:45,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:45,281 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 649 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:45,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 653 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-10 18:29:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2868. [2022-01-10 18:29:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2867 states have (on average 1.283571677711894) internal successors, (3680), 2867 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3680 transitions. [2022-01-10 18:29:45,466 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3680 transitions. Word has length 91 [2022-01-10 18:29:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:45,467 INFO L470 AbstractCegarLoop]: Abstraction has 2868 states and 3680 transitions. [2022-01-10 18:29:45,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3680 transitions. [2022-01-10 18:29:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:29:45,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:45,468 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, 1, 1, 1, 1, 1] [2022-01-10 18:29:45,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:29:45,468 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:45,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:45,469 INFO L85 PathProgramCache]: Analyzing trace with hash -124295183, now seen corresponding path program 1 times [2022-01-10 18:29:45,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:45,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298427560] [2022-01-10 18:29:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:45,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:45,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298427560] [2022-01-10 18:29:45,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298427560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:45,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:45,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:45,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695586697] [2022-01-10 18:29:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:45,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:45,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:45,508 INFO L87 Difference]: Start difference. First operand 2868 states and 3680 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:45,847 INFO L93 Difference]: Finished difference Result 8228 states and 10544 transitions. [2022-01-10 18:29:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-01-10 18:29:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:45,869 INFO L225 Difference]: With dead ends: 8228 [2022-01-10 18:29:45,869 INFO L226 Difference]: Without dead ends: 5509 [2022-01-10 18:29:45,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:45,876 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 544 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:45,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1370 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2022-01-10 18:29:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 5306. [2022-01-10 18:29:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 1.2765315739868048) internal successors, (6772), 5305 states have internal predecessors, (6772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 6772 transitions. [2022-01-10 18:29:46,273 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 6772 transitions. Word has length 92 [2022-01-10 18:29:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:46,273 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 6772 transitions. [2022-01-10 18:29:46,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 6772 transitions. [2022-01-10 18:29:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:29:46,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:46,275 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, 1, 1, 1, 1, 1] [2022-01-10 18:29:46,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:29:46,276 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -881632239, now seen corresponding path program 1 times [2022-01-10 18:29:46,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267990764] [2022-01-10 18:29:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:46,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:46,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:46,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267990764] [2022-01-10 18:29:46,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267990764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:46,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:46,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:46,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869037070] [2022-01-10 18:29:46,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:46,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:46,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:46,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:46,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:46,307 INFO L87 Difference]: Start difference. First operand 5306 states and 6772 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:46,634 INFO L93 Difference]: Finished difference Result 10391 states and 13276 transitions. [2022-01-10 18:29:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:46,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-01-10 18:29:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:46,665 INFO L225 Difference]: With dead ends: 10391 [2022-01-10 18:29:46,665 INFO L226 Difference]: Without dead ends: 5166 [2022-01-10 18:29:46,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:46,674 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 647 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:46,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 652 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2022-01-10 18:29:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5166. [2022-01-10 18:29:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.278218780251694) internal successors, (6602), 5165 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 6602 transitions. [2022-01-10 18:29:47,038 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 6602 transitions. Word has length 92 [2022-01-10 18:29:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:47,038 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 6602 transitions. [2022-01-10 18:29:47,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 6602 transitions. [2022-01-10 18:29:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 18:29:47,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:47,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:47,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:29:47,041 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -704700457, now seen corresponding path program 1 times [2022-01-10 18:29:47,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:47,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163369249] [2022-01-10 18:29:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:47,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:47,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:47,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163369249] [2022-01-10 18:29:47,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163369249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:47,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:47,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:47,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013729048] [2022-01-10 18:29:47,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:47,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:47,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:47,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:47,087 INFO L87 Difference]: Start difference. First operand 5166 states and 6602 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:47,612 INFO L93 Difference]: Finished difference Result 14814 states and 18910 transitions. [2022-01-10 18:29:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 18:29:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:47,633 INFO L225 Difference]: With dead ends: 14814 [2022-01-10 18:29:47,633 INFO L226 Difference]: Without dead ends: 9797 [2022-01-10 18:29:47,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:47,644 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 544 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:47,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1362 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2022-01-10 18:29:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 9506. [2022-01-10 18:29:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 9505 states have (on average 1.272382956338769) internal successors, (12094), 9505 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 12094 transitions. [2022-01-10 18:29:48,281 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 12094 transitions. Word has length 93 [2022-01-10 18:29:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:48,281 INFO L470 AbstractCegarLoop]: Abstraction has 9506 states and 12094 transitions. [2022-01-10 18:29:48,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 12094 transitions. [2022-01-10 18:29:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 18:29:48,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:48,284 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, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:48,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:29:48,284 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1433076821, now seen corresponding path program 1 times [2022-01-10 18:29:48,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:48,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251043393] [2022-01-10 18:29:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:48,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:48,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:48,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251043393] [2022-01-10 18:29:48,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251043393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:48,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:48,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:48,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386575609] [2022-01-10 18:29:48,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:48,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:48,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:48,353 INFO L87 Difference]: Start difference. First operand 9506 states and 12094 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:48,783 INFO L93 Difference]: Finished difference Result 18779 states and 23908 transitions. [2022-01-10 18:29:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:48,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 18:29:48,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:48,807 INFO L225 Difference]: With dead ends: 18779 [2022-01-10 18:29:48,808 INFO L226 Difference]: Without dead ends: 9368 [2022-01-10 18:29:48,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:48,826 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 645 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:48,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 651 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9368 states. [2022-01-10 18:29:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9368 to 9368. [2022-01-10 18:29:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9368 states, 9367 states have (on average 1.2734066403330841) internal successors, (11928), 9367 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9368 states to 9368 states and 11928 transitions. [2022-01-10 18:29:49,294 INFO L78 Accepts]: Start accepts. Automaton has 9368 states and 11928 transitions. Word has length 93 [2022-01-10 18:29:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:49,294 INFO L470 AbstractCegarLoop]: Abstraction has 9368 states and 11928 transitions. [2022-01-10 18:29:49,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9368 states and 11928 transitions. [2022-01-10 18:29:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 18:29:49,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:49,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:49,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:29:49,296 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1406201151, now seen corresponding path program 1 times [2022-01-10 18:29:49,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809238155] [2022-01-10 18:29:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:49,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:49,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:49,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809238155] [2022-01-10 18:29:49,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809238155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:49,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:49,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:49,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839145707] [2022-01-10 18:29:49,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:49,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:49,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:49,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:49,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:49,348 INFO L87 Difference]: Start difference. First operand 9368 states and 11928 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:50,190 INFO L93 Difference]: Finished difference Result 26688 states and 33932 transitions. [2022-01-10 18:29:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:50,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2022-01-10 18:29:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:50,226 INFO L225 Difference]: With dead ends: 26688 [2022-01-10 18:29:50,226 INFO L226 Difference]: Without dead ends: 17469 [2022-01-10 18:29:50,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:50,244 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 544 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1294 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17469 states. [2022-01-10 18:29:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17469 to 17114. [2022-01-10 18:29:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17114 states, 17113 states have (on average 1.2675743586746917) internal successors, (21692), 17113 states have internal predecessors, (21692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 21692 transitions. [2022-01-10 18:29:51,155 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 21692 transitions. Word has length 94 [2022-01-10 18:29:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:51,155 INFO L470 AbstractCegarLoop]: Abstraction has 17114 states and 21692 transitions. [2022-01-10 18:29:51,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 21692 transitions. [2022-01-10 18:29:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 18:29:51,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:51,157 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:51,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:29:51,158 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash -686701535, now seen corresponding path program 1 times [2022-01-10 18:29:51,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:51,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843088140] [2022-01-10 18:29:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:51,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:51,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843088140] [2022-01-10 18:29:51,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843088140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:51,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:51,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:51,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992353376] [2022-01-10 18:29:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:51,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:51,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:51,184 INFO L87 Difference]: Start difference. First operand 17114 states and 21692 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:52,019 INFO L93 Difference]: Finished difference Result 33983 states and 43092 transitions. [2022-01-10 18:29:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2022-01-10 18:29:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:52,046 INFO L225 Difference]: With dead ends: 33983 [2022-01-10 18:29:52,046 INFO L226 Difference]: Without dead ends: 16978 [2022-01-10 18:29:52,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:52,069 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 643 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:52,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 650 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16978 states. [2022-01-10 18:29:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16978 to 16978. [2022-01-10 18:29:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16978 states, 16977 states have (on average 1.2681863697944278) internal successors, (21530), 16977 states have internal predecessors, (21530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 21530 transitions. [2022-01-10 18:29:52,938 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 21530 transitions. Word has length 94 [2022-01-10 18:29:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:52,939 INFO L470 AbstractCegarLoop]: Abstraction has 16978 states and 21530 transitions. [2022-01-10 18:29:52,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 21530 transitions. [2022-01-10 18:29:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 18:29:52,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:52,940 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:52,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:29:52,941 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash 460130376, now seen corresponding path program 1 times [2022-01-10 18:29:52,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055441661] [2022-01-10 18:29:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:52,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:52,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055441661] [2022-01-10 18:29:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055441661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:52,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:52,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:29:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980178196] [2022-01-10 18:29:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:52,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:52,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:52,985 INFO L87 Difference]: Start difference. First operand 16978 states and 21530 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:54,640 INFO L93 Difference]: Finished difference Result 50283 states and 63796 transitions. [2022-01-10 18:29:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:54,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2022-01-10 18:29:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:54,687 INFO L225 Difference]: With dead ends: 50283 [2022-01-10 18:29:54,687 INFO L226 Difference]: Without dead ends: 33418 [2022-01-10 18:29:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:54,711 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 536 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:29:54,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 1182 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33418 states. [2022-01-10 18:29:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33418 to 33290. [2022-01-10 18:29:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33290 states, 33289 states have (on average 1.260236114031662) internal successors, (41952), 33289 states have internal predecessors, (41952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33290 states to 33290 states and 41952 transitions. [2022-01-10 18:29:56,823 INFO L78 Accepts]: Start accepts. Automaton has 33290 states and 41952 transitions. Word has length 95 [2022-01-10 18:29:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:56,824 INFO L470 AbstractCegarLoop]: Abstraction has 33290 states and 41952 transitions. [2022-01-10 18:29:56,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 33290 states and 41952 transitions. [2022-01-10 18:29:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 18:29:56,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:56,832 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:56,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:29:56,832 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1175054188, now seen corresponding path program 1 times [2022-01-10 18:29:56,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:56,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110668563] [2022-01-10 18:29:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:56,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:56,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:56,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110668563] [2022-01-10 18:29:56,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110668563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:56,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736656583] [2022-01-10 18:29:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:56,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:56,880 INFO L87 Difference]: Start difference. First operand 33290 states and 41952 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:59,969 INFO L93 Difference]: Finished difference Result 99193 states and 124898 transitions. [2022-01-10 18:29:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-01-10 18:29:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:00,084 INFO L225 Difference]: With dead ends: 99193 [2022-01-10 18:30:00,084 INFO L226 Difference]: Without dead ends: 66050 [2022-01-10 18:30:00,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:00,127 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 598 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:00,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 1881 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66050 states. [2022-01-10 18:30:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66050 to 66050. [2022-01-10 18:30:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66050 states, 66049 states have (on average 1.2562794289088404) internal successors, (82976), 66049 states have internal predecessors, (82976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66050 states to 66050 states and 82976 transitions. [2022-01-10 18:30:03,764 INFO L78 Accepts]: Start accepts. Automaton has 66050 states and 82976 transitions. Word has length 117 [2022-01-10 18:30:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:03,764 INFO L470 AbstractCegarLoop]: Abstraction has 66050 states and 82976 transitions. [2022-01-10 18:30:03,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 66050 states and 82976 transitions. [2022-01-10 18:30:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 18:30:03,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:03,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:03,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:30:03,812 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2113252961, now seen corresponding path program 1 times [2022-01-10 18:30:03,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:03,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883615486] [2022-01-10 18:30:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:03,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 18:30:03,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:03,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883615486] [2022-01-10 18:30:03,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883615486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:03,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:03,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:03,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818752903] [2022-01-10 18:30:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:03,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:03,861 INFO L87 Difference]: Start difference. First operand 66050 states and 82976 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:08,617 INFO L93 Difference]: Finished difference Result 161408 states and 202604 transitions. [2022-01-10 18:30:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 160 [2022-01-10 18:30:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:08,792 INFO L225 Difference]: With dead ends: 161408 [2022-01-10 18:30:08,792 INFO L226 Difference]: Without dead ends: 95457 [2022-01-10 18:30:08,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:08,858 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 447 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1181 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 [2022-01-10 18:30:08,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 1181 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95457 states. [2022-01-10 18:30:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95457 to 95198. [2022-01-10 18:30:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95198 states, 95197 states have (on average 1.2490309568578841) internal successors, (118904), 95197 states have internal predecessors, (118904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95198 states to 95198 states and 118904 transitions. [2022-01-10 18:30:13,540 INFO L78 Accepts]: Start accepts. Automaton has 95198 states and 118904 transitions. Word has length 160 [2022-01-10 18:30:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:13,540 INFO L470 AbstractCegarLoop]: Abstraction has 95198 states and 118904 transitions. [2022-01-10 18:30:13,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 95198 states and 118904 transitions. [2022-01-10 18:30:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 18:30:13,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:13,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:13,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:30:13,598 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1057184768, now seen corresponding path program 1 times [2022-01-10 18:30:13,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463817592] [2022-01-10 18:30:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:13,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 18:30:13,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463817592] [2022-01-10 18:30:13,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463817592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:13,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:13,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:13,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556397136] [2022-01-10 18:30:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:13,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:13,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:13,651 INFO L87 Difference]: Start difference. First operand 95198 states and 118904 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:20,102 INFO L93 Difference]: Finished difference Result 233056 states and 291012 transitions. [2022-01-10 18:30:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 160 [2022-01-10 18:30:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:20,363 INFO L225 Difference]: With dead ends: 233056 [2022-01-10 18:30:20,363 INFO L226 Difference]: Without dead ends: 137981 [2022-01-10 18:30:20,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:20,602 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 452 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1179 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 [2022-01-10 18:30:20,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137981 states. [2022-01-10 18:30:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137981 to 137594. [2022-01-10 18:30:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137594 states, 137593 states have (on average 1.2429702092402957) internal successors, (171024), 137593 states have internal predecessors, (171024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137594 states to 137594 states and 171024 transitions. [2022-01-10 18:30:27,540 INFO L78 Accepts]: Start accepts. Automaton has 137594 states and 171024 transitions. Word has length 160 [2022-01-10 18:30:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:27,541 INFO L470 AbstractCegarLoop]: Abstraction has 137594 states and 171024 transitions. [2022-01-10 18:30:27,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 137594 states and 171024 transitions. [2022-01-10 18:30:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 18:30:27,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:27,609 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:27,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:30:27,609 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash 121551098, now seen corresponding path program 1 times [2022-01-10 18:30:27,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:27,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160936795] [2022-01-10 18:30:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:27,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 18:30:27,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:27,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160936795] [2022-01-10 18:30:27,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160936795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:27,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:27,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:27,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054921089] [2022-01-10 18:30:27,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:27,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:27,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:27,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:27,659 INFO L87 Difference]: Start difference. First operand 137594 states and 171024 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:37,231 INFO L93 Difference]: Finished difference Result 336872 states and 418640 transitions. [2022-01-10 18:30:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:37,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 160 [2022-01-10 18:30:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:37,681 INFO L225 Difference]: With dead ends: 336872 [2022-01-10 18:30:37,682 INFO L226 Difference]: Without dead ends: 199425 [2022-01-10 18:30:37,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:37,829 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 456 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1177 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 [2022-01-10 18:30:37,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1177 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199425 states.