/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/product-lines/email_spec11_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:01:47,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:01:47,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:01:47,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:01:47,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:01:47,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:01:47,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:01:47,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:01:47,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:01:47,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:01:47,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:01:47,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:01:47,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:01:47,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:01:47,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:01:47,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:01:47,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:01:47,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:01:47,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:01:47,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:01:47,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:01:47,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:01:47,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:01:47,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:01:47,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:01:47,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:01:47,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:01:47,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:01:47,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:01:47,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:01:47,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:01:47,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:01:47,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:01:47,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:01:47,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:01:47,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:01:47,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:01:47,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:01:47,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:01:47,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:01:47,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:01:47,891 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 18:01:47,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:01:47,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:01:47,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:01:47,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:01:47,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:01:47,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:01:47,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:01:47,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:01:47,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:01:47,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:01:47,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:01:47,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:01:47,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:01:47,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:01:47,920 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:01:47,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:01:47,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:01:47,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:01:47,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:01:47,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:01:47,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:01:48,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:01:48,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:01:48,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:01:48,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:01:48,104 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:01:48,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2022-01-10 18:01:48,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e566cd50c/66cd741c053746128c42a10b60c1fdd0/FLAG6cfdb0e60 [2022-01-10 18:01:48,643 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:01:48,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2022-01-10 18:01:48,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e566cd50c/66cd741c053746128c42a10b60c1fdd0/FLAG6cfdb0e60 [2022-01-10 18:01:48,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e566cd50c/66cd741c053746128c42a10b60c1fdd0 [2022-01-10 18:01:48,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:01:48,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:01:48,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:01:48,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:01:48,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:01:48,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:01:48" (1/1) ... [2022-01-10 18:01:48,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55988448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:48, skipping insertion in model container [2022-01-10 18:01:48,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:01:48" (1/1) ... [2022-01-10 18:01:48,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:01:48,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:01:49,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 18:01:49,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:49,090 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:01:49,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:01:49,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 18:01:49,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:49,187 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:01:49,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 18:01:49,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:01:49,291 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:01:49,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49 WrapperNode [2022-01-10 18:01:49,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:01:49,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:01:49,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:01:49,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:01:49,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,417 INFO L137 Inliner]: procedures = 136, calls = 227, calls flagged for inlining = 136, calls inlined = 203, statements flattened = 2958 [2022-01-10 18:01:49,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:01:49,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:01:49,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:01:49,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:01:49,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:01:49,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:01:49,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:01:49,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:01:49,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (1/1) ... [2022-01-10 18:01:49,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:01:49,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:01:49,561 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 18:01:49,568 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 18:01:49,592 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:01:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:01:49,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:01:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:01:49,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:01:49,763 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:01:49,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:01:51,019 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:01:51,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:01:51,028 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:01:51,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:51 BoogieIcfgContainer [2022-01-10 18:01:51,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:01:51,031 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:01:51,031 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:01:51,032 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:01:51,034 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:51" (1/1) ... [2022-01-10 18:01:51,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:51 BasicIcfg [2022-01-10 18:01:51,348 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:01:51,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:01:51,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:01:51,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:01:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:01:48" (1/4) ... [2022-01-10 18:01:51,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a69b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:51, skipping insertion in model container [2022-01-10 18:01:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:01:49" (2/4) ... [2022-01-10 18:01:51,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a69b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:01:51, skipping insertion in model container [2022-01-10 18:01:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:01:51" (3/4) ... [2022-01-10 18:01:51,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a69b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:01:51, skipping insertion in model container [2022-01-10 18:01:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:01:51" (4/4) ... [2022-01-10 18:01:51,356 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.cTransformedIcfg [2022-01-10 18:01:51,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:01:51,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:01:51,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:01:51,409 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 18:01:51,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:01:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 645 states, 642 states have (on average 1.6682242990654206) internal successors, (1071), 644 states have internal predecessors, (1071), 0 states have call successors, (0), 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 18:01:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:01:51,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:51,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:51,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2135243838, now seen corresponding path program 1 times [2022-01-10 18:01:51,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229887444] [2022-01-10 18:01:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:51,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:51,747 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 18:01:51,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:51,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229887444] [2022-01-10 18:01:51,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229887444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:51,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:51,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:01:51,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558389627] [2022-01-10 18:01:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:01:51,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:01:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:01:51,780 INFO L87 Difference]: Start difference. First operand has 645 states, 642 states have (on average 1.6682242990654206) internal successors, (1071), 644 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:51,824 INFO L93 Difference]: Finished difference Result 1024 states and 1674 transitions. [2022-01-10 18:01:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:01:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 18:01:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:51,843 INFO L225 Difference]: With dead ends: 1024 [2022-01-10 18:01:51,843 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 18:01:51,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:01:51,851 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:51,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 18:01:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 18:01:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 574 states have (on average 1.6829268292682926) internal successors, (966), 575 states have internal predecessors, (966), 0 states have call successors, (0), 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 18:01:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 966 transitions. [2022-01-10 18:01:51,903 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 966 transitions. Word has length 70 [2022-01-10 18:01:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:51,903 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 966 transitions. [2022-01-10 18:01:51,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 966 transitions. [2022-01-10 18:01:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:01:51,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:51,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:51,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:01:51,906 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1358314084, now seen corresponding path program 1 times [2022-01-10 18:01:51,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:51,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328196239] [2022-01-10 18:01:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:51,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:52,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:52,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328196239] [2022-01-10 18:01:52,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328196239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:52,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:52,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:52,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915916309] [2022-01-10 18:01:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:52,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:52,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:52,130 INFO L87 Difference]: Start difference. First operand 576 states and 966 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:52,223 INFO L93 Difference]: Finished difference Result 1133 states and 1904 transitions. [2022-01-10 18:01:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 18:01:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:52,228 INFO L225 Difference]: With dead ends: 1133 [2022-01-10 18:01:52,228 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 18:01:52,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:01:52,230 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 941 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:52,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 959 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 18:01:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 18:01:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 574 states have (on average 1.6794425087108014) internal successors, (964), 575 states have internal predecessors, (964), 0 states have call successors, (0), 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 18:01:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 964 transitions. [2022-01-10 18:01:52,270 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 964 transitions. Word has length 71 [2022-01-10 18:01:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:52,271 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 964 transitions. [2022-01-10 18:01:52,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 964 transitions. [2022-01-10 18:01:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:01:52,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:52,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:52,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:01:52,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash -258336996, now seen corresponding path program 1 times [2022-01-10 18:01:52,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:52,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274375527] [2022-01-10 18:01:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:52,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:52,444 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 18:01:52,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:52,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274375527] [2022-01-10 18:01:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274375527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:52,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:52,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:52,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432985367] [2022-01-10 18:01:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:52,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:52,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:52,447 INFO L87 Difference]: Start difference. First operand 576 states and 964 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:52,648 INFO L93 Difference]: Finished difference Result 2748 states and 4616 transitions. [2022-01-10 18:01:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:01:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:01:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:52,658 INFO L225 Difference]: With dead ends: 2748 [2022-01-10 18:01:52,658 INFO L226 Difference]: Without dead ends: 2196 [2022-01-10 18:01:52,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:52,665 INFO L933 BasicCegarLoop]: 1851 mSDtfsCounter, 4603 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4603 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:52,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4603 Valid, 4615 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-01-10 18:01:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 576. [2022-01-10 18:01:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 574 states have (on average 1.6777003484320558) internal successors, (963), 575 states have internal predecessors, (963), 0 states have call successors, (0), 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 18:01:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 963 transitions. [2022-01-10 18:01:52,709 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 963 transitions. Word has length 73 [2022-01-10 18:01:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:52,710 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 963 transitions. [2022-01-10 18:01:52,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 963 transitions. [2022-01-10 18:01:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:01:52,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:52,712 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] [2022-01-10 18:01:52,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:01:52,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:52,713 INFO L85 PathProgramCache]: Analyzing trace with hash -408850908, now seen corresponding path program 1 times [2022-01-10 18:01:52,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:52,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705501609] [2022-01-10 18:01:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:52,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:52,865 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 18:01:52,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:52,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705501609] [2022-01-10 18:01:52,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705501609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:52,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:52,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:01:52,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928359428] [2022-01-10 18:01:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:52,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:01:52,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:52,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:01:52,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:01:52,867 INFO L87 Difference]: Start difference. First operand 576 states and 963 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:52,912 INFO L93 Difference]: Finished difference Result 1137 states and 1904 transitions. [2022-01-10 18:01:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:01:52,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 18:01:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:52,915 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 18:01:52,915 INFO L226 Difference]: Without dead ends: 590 [2022-01-10 18:01:52,916 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 18:01:52,917 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 942 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:52,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 999 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-01-10 18:01:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 576. [2022-01-10 18:01:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 574 states have (on average 1.67595818815331) internal successors, (962), 575 states have internal predecessors, (962), 0 states have call successors, (0), 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 18:01:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 962 transitions. [2022-01-10 18:01:52,944 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 962 transitions. Word has length 74 [2022-01-10 18:01:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:52,945 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 962 transitions. [2022-01-10 18:01:52,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 962 transitions. [2022-01-10 18:01:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:01:52,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:52,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:52,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:01:52,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1107642883, now seen corresponding path program 1 times [2022-01-10 18:01:52,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:52,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463732587] [2022-01-10 18:01:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:52,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:53,040 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 18:01:53,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:53,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463732587] [2022-01-10 18:01:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463732587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909073428] [2022-01-10 18:01:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:53,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:53,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:53,042 INFO L87 Difference]: Start difference. First operand 576 states and 962 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:53,175 INFO L93 Difference]: Finished difference Result 1662 states and 2786 transitions. [2022-01-10 18:01:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:01:53,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 18:01:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:53,180 INFO L225 Difference]: With dead ends: 1662 [2022-01-10 18:01:53,180 INFO L226 Difference]: Without dead ends: 1120 [2022-01-10 18:01:53,181 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 18:01:53,181 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 4526 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:53,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4526 Valid, 1956 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-01-10 18:01:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 576. [2022-01-10 18:01:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 574 states have (on average 1.6724738675958188) internal successors, (960), 575 states have internal predecessors, (960), 0 states have call successors, (0), 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 18:01:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 960 transitions. [2022-01-10 18:01:53,239 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 960 transitions. Word has length 75 [2022-01-10 18:01:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:53,239 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 960 transitions. [2022-01-10 18:01:53,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 960 transitions. [2022-01-10 18:01:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:01:53,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:53,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:53,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:01:53,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -494105446, now seen corresponding path program 1 times [2022-01-10 18:01:53,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869142141] [2022-01-10 18:01:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:53,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:53,339 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 18:01:53,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:53,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869142141] [2022-01-10 18:01:53,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869142141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:53,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:53,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:01:53,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896931181] [2022-01-10 18:01:53,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:53,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:01:53,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:01:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:01:53,341 INFO L87 Difference]: Start difference. First operand 576 states and 960 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:53,784 INFO L93 Difference]: Finished difference Result 3919 states and 6424 transitions. [2022-01-10 18:01:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:01:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:01:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:53,795 INFO L225 Difference]: With dead ends: 3919 [2022-01-10 18:01:53,795 INFO L226 Difference]: Without dead ends: 3626 [2022-01-10 18:01:53,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:01:53,796 INFO L933 BasicCegarLoop]: 1566 mSDtfsCounter, 6718 mSDsluCounter, 5938 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6718 SdHoareTripleChecker+Valid, 7504 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:53,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6718 Valid, 7504 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2022-01-10 18:01:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 1022. [2022-01-10 18:01:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1020 states have (on average 1.6745098039215687) internal successors, (1708), 1021 states have internal predecessors, (1708), 0 states have call successors, (0), 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 18:01:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1708 transitions. [2022-01-10 18:01:53,865 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1708 transitions. Word has length 77 [2022-01-10 18:01:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:53,865 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1708 transitions. [2022-01-10 18:01:53,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1708 transitions. [2022-01-10 18:01:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:01:53,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:53,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:53,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:01:53,867 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1040340499, now seen corresponding path program 1 times [2022-01-10 18:01:53,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:53,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627767477] [2022-01-10 18:01:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:53,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:53,973 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 18:01:53,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627767477] [2022-01-10 18:01:53,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627767477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:53,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:53,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087595629] [2022-01-10 18:01:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:53,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:53,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:53,974 INFO L87 Difference]: Start difference. First operand 1022 states and 1708 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:54,118 INFO L93 Difference]: Finished difference Result 1895 states and 3096 transitions. [2022-01-10 18:01:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:01:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 18:01:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:54,122 INFO L225 Difference]: With dead ends: 1895 [2022-01-10 18:01:54,122 INFO L226 Difference]: Without dead ends: 1411 [2022-01-10 18:01:54,124 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 18:01:54,126 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 2690 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:54,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2690 Valid, 2255 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-01-10 18:01:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1022. [2022-01-10 18:01:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1020 states have (on average 1.6705882352941177) internal successors, (1704), 1021 states have internal predecessors, (1704), 0 states have call successors, (0), 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 18:01:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1704 transitions. [2022-01-10 18:01:54,195 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1704 transitions. Word has length 78 [2022-01-10 18:01:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:54,195 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1704 transitions. [2022-01-10 18:01:54,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1704 transitions. [2022-01-10 18:01:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 18:01:54,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:54,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:54,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:01:54,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1575551266, now seen corresponding path program 1 times [2022-01-10 18:01:54,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:54,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184648945] [2022-01-10 18:01:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:54,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:54,263 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 18:01:54,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:54,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184648945] [2022-01-10 18:01:54,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184648945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:54,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:54,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:01:54,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037300238] [2022-01-10 18:01:54,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:54,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:54,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:54,265 INFO L87 Difference]: Start difference. First operand 1022 states and 1704 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:54,448 INFO L93 Difference]: Finished difference Result 2943 states and 4941 transitions. [2022-01-10 18:01:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:01:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 18:01:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:54,455 INFO L225 Difference]: With dead ends: 2943 [2022-01-10 18:01:54,455 INFO L226 Difference]: Without dead ends: 1958 [2022-01-10 18:01:54,457 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 18:01:54,457 INFO L933 BasicCegarLoop]: 1819 mSDtfsCounter, 2811 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:54,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2811 Valid, 2730 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-01-10 18:01:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1022. [2022-01-10 18:01:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1020 states have (on average 1.6686274509803922) internal successors, (1702), 1021 states have internal predecessors, (1702), 0 states have call successors, (0), 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 18:01:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1702 transitions. [2022-01-10 18:01:54,550 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1702 transitions. Word has length 78 [2022-01-10 18:01:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:54,550 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1702 transitions. [2022-01-10 18:01:54,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1702 transitions. [2022-01-10 18:01:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 18:01:54,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:54,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:54,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:01:54,552 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -340133850, now seen corresponding path program 1 times [2022-01-10 18:01:54,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:54,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626533621] [2022-01-10 18:01:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:54,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:01:54,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626533621] [2022-01-10 18:01:54,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626533621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:54,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951323369] [2022-01-10 18:01:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:01:54,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:01:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:01:54,668 INFO L87 Difference]: Start difference. First operand 1022 states and 1702 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:55,421 INFO L93 Difference]: Finished difference Result 4832 states and 7740 transitions. [2022-01-10 18:01:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:01:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 18:01:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:55,433 INFO L225 Difference]: With dead ends: 4832 [2022-01-10 18:01:55,434 INFO L226 Difference]: Without dead ends: 4390 [2022-01-10 18:01:55,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2022-01-10 18:01:55,435 INFO L933 BasicCegarLoop]: 1260 mSDtfsCounter, 9765 mSDsluCounter, 6106 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9765 SdHoareTripleChecker+Valid, 7366 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:55,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9765 Valid, 7366 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-01-10 18:01:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 1883. [2022-01-10 18:01:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1881 states have (on average 1.6799574694311536) internal successors, (3160), 1882 states have internal predecessors, (3160), 0 states have call successors, (0), 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 18:01:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3160 transitions. [2022-01-10 18:01:55,578 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3160 transitions. Word has length 79 [2022-01-10 18:01:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:55,578 INFO L470 AbstractCegarLoop]: Abstraction has 1883 states and 3160 transitions. [2022-01-10 18:01:55,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3160 transitions. [2022-01-10 18:01:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:01:55,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:55,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:55,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:01:55,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1698738852, now seen corresponding path program 1 times [2022-01-10 18:01:55,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:55,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264681059] [2022-01-10 18:01:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:55,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:55,696 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 18:01:55,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:55,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264681059] [2022-01-10 18:01:55,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264681059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:55,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:55,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:55,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772719548] [2022-01-10 18:01:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:55,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:55,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:55,698 INFO L87 Difference]: Start difference. First operand 1883 states and 3160 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:56,283 INFO L93 Difference]: Finished difference Result 5467 states and 8886 transitions. [2022-01-10 18:01:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:01:56,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:01:56,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:56,295 INFO L225 Difference]: With dead ends: 5467 [2022-01-10 18:01:56,296 INFO L226 Difference]: Without dead ends: 4688 [2022-01-10 18:01:56,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 18:01:56,297 INFO L933 BasicCegarLoop]: 1209 mSDtfsCounter, 2614 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:56,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 4160 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:01:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4688 states. [2022-01-10 18:01:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4688 to 3205. [2022-01-10 18:01:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3205 states, 3203 states have (on average 1.6693724633156415) internal successors, (5347), 3204 states have internal predecessors, (5347), 0 states have call successors, (0), 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 18:01:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 5347 transitions. [2022-01-10 18:01:56,604 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 5347 transitions. Word has length 80 [2022-01-10 18:01:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:56,604 INFO L470 AbstractCegarLoop]: Abstraction has 3205 states and 5347 transitions. [2022-01-10 18:01:56,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 5347 transitions. [2022-01-10 18:01:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:01:56,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:56,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:56,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:01:56,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1347938915, now seen corresponding path program 1 times [2022-01-10 18:01:56,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:56,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570356769] [2022-01-10 18:01:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:56,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:56,733 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 18:01:56,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570356769] [2022-01-10 18:01:56,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570356769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:56,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:56,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:01:56,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699322503] [2022-01-10 18:01:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:56,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:01:56,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:01:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:01:56,735 INFO L87 Difference]: Start difference. First operand 3205 states and 5347 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:57,963 INFO L93 Difference]: Finished difference Result 10011 states and 15890 transitions. [2022-01-10 18:01:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:01:57,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:01:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:57,985 INFO L225 Difference]: With dead ends: 10011 [2022-01-10 18:01:57,986 INFO L226 Difference]: Without dead ends: 8820 [2022-01-10 18:01:57,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:01:57,990 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 5354 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5354 SdHoareTripleChecker+Valid, 8468 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:57,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5354 Valid, 8468 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:01:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2022-01-10 18:01:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 3665. [2022-01-10 18:01:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3663 states have (on average 1.6582036582036581) internal successors, (6074), 3664 states have internal predecessors, (6074), 0 states have call successors, (0), 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 18:01:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 6074 transitions. [2022-01-10 18:01:58,473 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 6074 transitions. Word has length 80 [2022-01-10 18:01:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:58,473 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 6074 transitions. [2022-01-10 18:01:58,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 6074 transitions. [2022-01-10 18:01:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:01:58,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:58,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:01:58,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:01:58,478 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash 700537453, now seen corresponding path program 1 times [2022-01-10 18:01:58,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265273905] [2022-01-10 18:01:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:58,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:58,545 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 18:01:58,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265273905] [2022-01-10 18:01:58,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265273905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:58,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:58,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:58,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647695970] [2022-01-10 18:01:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:58,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:01:58,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:01:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:01:58,546 INFO L87 Difference]: Start difference. First operand 3665 states and 6074 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:01:58,970 INFO L93 Difference]: Finished difference Result 5283 states and 8582 transitions. [2022-01-10 18:01:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:01:58,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:01:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:01:58,985 INFO L225 Difference]: With dead ends: 5283 [2022-01-10 18:01:58,986 INFO L226 Difference]: Without dead ends: 4328 [2022-01-10 18:01:58,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:58,989 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 1259 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:01:58,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 2142 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:01:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2022-01-10 18:01:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 3665. [2022-01-10 18:01:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3663 states have (on average 1.657111657111657) internal successors, (6070), 3664 states have internal predecessors, (6070), 0 states have call successors, (0), 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 18:01:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 6070 transitions. [2022-01-10 18:01:59,318 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 6070 transitions. Word has length 80 [2022-01-10 18:01:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:01:59,318 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 6070 transitions. [2022-01-10 18:01:59,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:01:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 6070 transitions. [2022-01-10 18:01:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 18:01:59,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:01:59,322 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] [2022-01-10 18:01:59,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:01:59,322 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:01:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:01:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 251840814, now seen corresponding path program 1 times [2022-01-10 18:01:59,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:01:59,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414154756] [2022-01-10 18:01:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:01:59,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:01:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:01:59,405 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 18:01:59,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:01:59,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414154756] [2022-01-10 18:01:59,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414154756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:01:59,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:01:59,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:01:59,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782078416] [2022-01-10 18:01:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:01:59,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:01:59,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:01:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:01:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:01:59,406 INFO L87 Difference]: Start difference. First operand 3665 states and 6070 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:00,517 INFO L93 Difference]: Finished difference Result 9344 states and 14706 transitions. [2022-01-10 18:02:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:02:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 18:02:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:00,532 INFO L225 Difference]: With dead ends: 9344 [2022-01-10 18:02:00,532 INFO L226 Difference]: Without dead ends: 7649 [2022-01-10 18:02:00,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:02:00,537 INFO L933 BasicCegarLoop]: 1813 mSDtfsCounter, 2439 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:00,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 5557 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-01-10 18:02:00,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4041. [2022-01-10 18:02:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 4039 states have (on average 1.6358009408269374) internal successors, (6607), 4040 states have internal predecessors, (6607), 0 states have call successors, (0), 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 18:02:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 6607 transitions. [2022-01-10 18:02:01,007 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 6607 transitions. Word has length 80 [2022-01-10 18:02:01,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:01,007 INFO L470 AbstractCegarLoop]: Abstraction has 4041 states and 6607 transitions. [2022-01-10 18:02:01,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:01,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 6607 transitions. [2022-01-10 18:02:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:02:01,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:01,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:01,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:02:01,012 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1326206897, now seen corresponding path program 1 times [2022-01-10 18:02:01,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:01,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491040363] [2022-01-10 18:02:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:01,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:01,095 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 18:02:01,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:01,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491040363] [2022-01-10 18:02:01,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491040363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:01,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:01,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:02:01,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669290303] [2022-01-10 18:02:01,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:01,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:02:01,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:02:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:02:01,096 INFO L87 Difference]: Start difference. First operand 4041 states and 6607 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:03,409 INFO L93 Difference]: Finished difference Result 22689 states and 36713 transitions. [2022-01-10 18:02:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:02:03,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:02:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:03,450 INFO L225 Difference]: With dead ends: 22689 [2022-01-10 18:02:03,450 INFO L226 Difference]: Without dead ends: 20848 [2022-01-10 18:02:03,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:02:03,458 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 5238 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5238 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:03,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5238 Valid, 5778 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20848 states. [2022-01-10 18:02:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20848 to 7949. [2022-01-10 18:02:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7949 states, 7947 states have (on average 1.6358374229268906) internal successors, (13000), 7948 states have internal predecessors, (13000), 0 states have call successors, (0), 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 18:02:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 13000 transitions. [2022-01-10 18:02:04,412 INFO L78 Accepts]: Start accepts. Automaton has 7949 states and 13000 transitions. Word has length 81 [2022-01-10 18:02:04,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:04,413 INFO L470 AbstractCegarLoop]: Abstraction has 7949 states and 13000 transitions. [2022-01-10 18:02:04,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7949 states and 13000 transitions. [2022-01-10 18:02:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:02:04,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:04,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:04,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:02:04,421 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 473826932, now seen corresponding path program 1 times [2022-01-10 18:02:04,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:04,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832649937] [2022-01-10 18:02:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:04,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:04,528 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 18:02:04,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:04,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832649937] [2022-01-10 18:02:04,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832649937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:04,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:04,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:02:04,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941699646] [2022-01-10 18:02:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:04,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:02:04,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:02:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:02:04,530 INFO L87 Difference]: Start difference. First operand 7949 states and 13000 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:05,829 INFO L93 Difference]: Finished difference Result 14365 states and 22821 transitions. [2022-01-10 18:02:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:02:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:02:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:05,860 INFO L225 Difference]: With dead ends: 14365 [2022-01-10 18:02:05,860 INFO L226 Difference]: Without dead ends: 9658 [2022-01-10 18:02:05,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:02:05,869 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 2757 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2757 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:05,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2757 Valid, 5007 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9658 states. [2022-01-10 18:02:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9658 to 7885. [2022-01-10 18:02:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7885 states, 7883 states have (on average 1.6313586198147914) internal successors, (12860), 7884 states have internal predecessors, (12860), 0 states have call successors, (0), 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 18:02:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7885 states to 7885 states and 12860 transitions. [2022-01-10 18:02:06,740 INFO L78 Accepts]: Start accepts. Automaton has 7885 states and 12860 transitions. Word has length 81 [2022-01-10 18:02:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:06,741 INFO L470 AbstractCegarLoop]: Abstraction has 7885 states and 12860 transitions. [2022-01-10 18:02:06,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7885 states and 12860 transitions. [2022-01-10 18:02:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:02:06,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:06,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:06,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:02:06,748 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash 227539366, now seen corresponding path program 1 times [2022-01-10 18:02:06,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:06,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633561507] [2022-01-10 18:02:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:06,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:06,856 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 18:02:06,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:06,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633561507] [2022-01-10 18:02:06,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633561507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:06,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:06,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:02:06,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831638218] [2022-01-10 18:02:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:06,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:02:06,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:02:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:02:06,859 INFO L87 Difference]: Start difference. First operand 7885 states and 12860 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:09,025 INFO L93 Difference]: Finished difference Result 16462 states and 26210 transitions. [2022-01-10 18:02:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:02:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:02:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:09,045 INFO L225 Difference]: With dead ends: 16462 [2022-01-10 18:02:09,046 INFO L226 Difference]: Without dead ends: 13791 [2022-01-10 18:02:09,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:02:09,052 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 6929 mSDsluCounter, 3750 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6929 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:09,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6929 Valid, 4939 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2022-01-10 18:02:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 7877. [2022-01-10 18:02:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7877 states, 7875 states have (on average 1.630984126984127) internal successors, (12844), 7876 states have internal predecessors, (12844), 0 states have call successors, (0), 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 18:02:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 12844 transitions. [2022-01-10 18:02:09,993 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 12844 transitions. Word has length 82 [2022-01-10 18:02:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:09,993 INFO L470 AbstractCegarLoop]: Abstraction has 7877 states and 12844 transitions. [2022-01-10 18:02:09,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 12844 transitions. [2022-01-10 18:02:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:02:10,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:10,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:10,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:02:10,000 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash 438890279, now seen corresponding path program 1 times [2022-01-10 18:02:10,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:10,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846565386] [2022-01-10 18:02:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:10,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:10,089 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 18:02:10,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:10,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846565386] [2022-01-10 18:02:10,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846565386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:10,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:10,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:02:10,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502389119] [2022-01-10 18:02:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:10,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:02:10,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:02:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:10,091 INFO L87 Difference]: Start difference. First operand 7877 states and 12844 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:14,877 INFO L93 Difference]: Finished difference Result 32313 states and 50052 transitions. [2022-01-10 18:02:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:02:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:02:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:14,919 INFO L225 Difference]: With dead ends: 32313 [2022-01-10 18:02:14,919 INFO L226 Difference]: Without dead ends: 28866 [2022-01-10 18:02:14,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:02:14,929 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 3317 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:14,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 4302 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:02:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28866 states. [2022-01-10 18:02:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28866 to 12444. [2022-01-10 18:02:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12444 states, 12442 states have (on average 1.5857579167336442) internal successors, (19730), 12443 states have internal predecessors, (19730), 0 states have call successors, (0), 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 18:02:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12444 states to 12444 states and 19730 transitions. [2022-01-10 18:02:16,829 INFO L78 Accepts]: Start accepts. Automaton has 12444 states and 19730 transitions. Word has length 82 [2022-01-10 18:02:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:16,829 INFO L470 AbstractCegarLoop]: Abstraction has 12444 states and 19730 transitions. [2022-01-10 18:02:16,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12444 states and 19730 transitions. [2022-01-10 18:02:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:02:16,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:16,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:16,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:02:16,838 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -861252289, now seen corresponding path program 1 times [2022-01-10 18:02:16,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:16,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53209736] [2022-01-10 18:02:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:16,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:16,926 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 18:02:16,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53209736] [2022-01-10 18:02:16,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53209736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:16,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:16,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:02:16,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983893012] [2022-01-10 18:02:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:16,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:02:16,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:02:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:16,928 INFO L87 Difference]: Start difference. First operand 12444 states and 19730 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:24,206 INFO L93 Difference]: Finished difference Result 44112 states and 66987 transitions. [2022-01-10 18:02:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:02:24,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 18:02:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:24,274 INFO L225 Difference]: With dead ends: 44112 [2022-01-10 18:02:24,274 INFO L226 Difference]: Without dead ends: 38266 [2022-01-10 18:02:24,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:02:24,289 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 2190 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:24,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 4833 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38266 states. [2022-01-10 18:02:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38266 to 12532. [2022-01-10 18:02:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12532 states, 12530 states have (on average 1.5816440542697525) internal successors, (19818), 12531 states have internal predecessors, (19818), 0 states have call successors, (0), 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 18:02:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12532 states to 12532 states and 19818 transitions. [2022-01-10 18:02:26,365 INFO L78 Accepts]: Start accepts. Automaton has 12532 states and 19818 transitions. Word has length 84 [2022-01-10 18:02:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:26,366 INFO L470 AbstractCegarLoop]: Abstraction has 12532 states and 19818 transitions. [2022-01-10 18:02:26,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12532 states and 19818 transitions. [2022-01-10 18:02:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:02:26,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:26,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:26,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:02:26,374 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:26,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash 830484959, now seen corresponding path program 1 times [2022-01-10 18:02:26,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:26,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421480113] [2022-01-10 18:02:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:26,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:26,483 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 18:02:26,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:26,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421480113] [2022-01-10 18:02:26,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421480113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:26,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:26,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:02:26,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597246930] [2022-01-10 18:02:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:26,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:02:26,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:02:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:02:26,484 INFO L87 Difference]: Start difference. First operand 12532 states and 19818 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:29,861 INFO L93 Difference]: Finished difference Result 25593 states and 39388 transitions. [2022-01-10 18:02:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:02:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 18:02:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:29,888 INFO L225 Difference]: With dead ends: 25593 [2022-01-10 18:02:29,888 INFO L226 Difference]: Without dead ends: 17499 [2022-01-10 18:02:29,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 18:02:29,900 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 4014 mSDsluCounter, 4982 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4014 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:29,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4014 Valid, 5910 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17499 states. [2022-01-10 18:02:31,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17499 to 12452. [2022-01-10 18:02:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12452 states, 12450 states have (on average 1.5757429718875502) internal successors, (19618), 12451 states have internal predecessors, (19618), 0 states have call successors, (0), 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 18:02:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 19618 transitions. [2022-01-10 18:02:31,932 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 19618 transitions. Word has length 84 [2022-01-10 18:02:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 12452 states and 19618 transitions. [2022-01-10 18:02:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 19618 transitions. [2022-01-10 18:02:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:02:31,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:31,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:31,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:02:31,941 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1866071175, now seen corresponding path program 1 times [2022-01-10 18:02:31,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:31,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233386544] [2022-01-10 18:02:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:31,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:32,007 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 18:02:32,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:32,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233386544] [2022-01-10 18:02:32,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233386544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:32,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:32,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:02:32,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075329410] [2022-01-10 18:02:32,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:32,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:02:32,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:32,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:02:32,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:02:32,008 INFO L87 Difference]: Start difference. First operand 12452 states and 19618 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:38,752 INFO L93 Difference]: Finished difference Result 41944 states and 63518 transitions. [2022-01-10 18:02:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:02:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 18:02:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:38,806 INFO L225 Difference]: With dead ends: 41944 [2022-01-10 18:02:38,806 INFO L226 Difference]: Without dead ends: 32974 [2022-01-10 18:02:38,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:38,820 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 1173 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:38,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 3322 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32974 states. [2022-01-10 18:02:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32974 to 12540. [2022-01-10 18:02:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12540 states, 12538 states have (on average 1.571702025841442) internal successors, (19706), 12539 states have internal predecessors, (19706), 0 states have call successors, (0), 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 18:02:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12540 states to 12540 states and 19706 transitions. [2022-01-10 18:02:41,089 INFO L78 Accepts]: Start accepts. Automaton has 12540 states and 19706 transitions. Word has length 86 [2022-01-10 18:02:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:02:41,089 INFO L470 AbstractCegarLoop]: Abstraction has 12540 states and 19706 transitions. [2022-01-10 18:02:41,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 12540 states and 19706 transitions. [2022-01-10 18:02:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 18:02:41,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:02:41,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:02:41,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:02:41,097 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:02:41,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:02:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1389009944, now seen corresponding path program 1 times [2022-01-10 18:02:41,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:02:41,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782764502] [2022-01-10 18:02:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:02:41,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:02:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:02:41,172 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 18:02:41,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:02:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782764502] [2022-01-10 18:02:41,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782764502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:02:41,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:02:41,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:02:41,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938172282] [2022-01-10 18:02:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:02:41,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:02:41,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:02:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:02:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:02:41,174 INFO L87 Difference]: Start difference. First operand 12540 states and 19706 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:02:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:02:55,712 INFO L93 Difference]: Finished difference Result 74968 states and 113454 transitions. [2022-01-10 18:02:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:02:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 18:02:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:02:55,842 INFO L225 Difference]: With dead ends: 74968 [2022-01-10 18:02:55,842 INFO L226 Difference]: Without dead ends: 65950 [2022-01-10 18:02:55,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:02:55,871 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 3450 mSDsluCounter, 3569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:02:55,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3450 Valid, 4704 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:02:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65950 states.