/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:38:19,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:38:19,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:38:19,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:38:19,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:38:19,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:38:19,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:38:19,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:38:19,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:38:19,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:38:19,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:38:19,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:38:19,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:38:19,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:38:19,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:38:19,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:38:19,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:38:19,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:38:19,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:38:19,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:38:19,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:38:19,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:38:19,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:38:19,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:38:19,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:38:19,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:38:19,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:38:19,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:38:19,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:38:19,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:38:19,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:38:19,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:38:19,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:38:19,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:38:19,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:38:19,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:38:19,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:38:19,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:38:19,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:38:19,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:38:19,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:38:19,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:38:19,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:38:19,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:38:19,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:38:19,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:38:19,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:38:19,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:38:19,944 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:38:19,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:38:19,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:38:19,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:38:19,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:38:19,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:38:19,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:38:19,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:38:19,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:38:19,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:38:19,947 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:38:19,947 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:38:20,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:38:20,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:38:20,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:38:20,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:38:20,143 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:38:20,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product37.cil.c [2022-01-11 05:38:20,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28b15101/31a0309f8c2549059d95444de760d111/FLAG1202ae253 [2022-01-11 05:38:20,628 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:38:20,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product37.cil.c [2022-01-11 05:38:20,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28b15101/31a0309f8c2549059d95444de760d111/FLAG1202ae253 [2022-01-11 05:38:20,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28b15101/31a0309f8c2549059d95444de760d111 [2022-01-11 05:38:20,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:38:20,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:38:20,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:38:20,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:38:20,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:38:20,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:38:20" (1/1) ... [2022-01-11 05:38:20,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71de8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:20, skipping insertion in model container [2022-01-11 05:38:20,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:38:20" (1/1) ... [2022-01-11 05:38:20,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:38:20,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:38:20,852 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_spec0_product37.cil.c[1542,1555] [2022-01-11 05:38:21,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:38:21,081 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:38:21,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:38:21,092 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_spec0_product37.cil.c[1542,1555] [2022-01-11 05:38:21,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:38:21,196 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:38:21,206 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_spec0_product37.cil.c[1542,1555] [2022-01-11 05:38:21,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:38:21,309 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:38:21,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21 WrapperNode [2022-01-11 05:38:21,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:38:21,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:38:21,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:38:21,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:38:21,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,440 INFO L137 Inliner]: procedures = 126, calls = 186, calls flagged for inlining = 100, calls inlined = 123, statements flattened = 1688 [2022-01-11 05:38:21,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:38:21,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:38:21,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:38:21,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:38:21,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:38:21,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:38:21,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:38:21,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:38:21,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (1/1) ... [2022-01-11 05:38:21,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:38:21,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:38:21,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:38:21,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:38:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:38:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:38:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:38:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:38:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:38:21,827 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:38:21,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:38:22,622 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:38:22,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:38:22,636 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:38:22,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:38:22 BoogieIcfgContainer [2022-01-11 05:38:22,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:38:22,639 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:38:22,639 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:38:22,640 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:38:22,642 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:38:22" (1/1) ... [2022-01-11 05:38:22,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:38:22 BasicIcfg [2022-01-11 05:38:22,864 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:38:22,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:38:22,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:38:22,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:38:22,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:38:20" (1/4) ... [2022-01-11 05:38:22,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daef6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:38:22, skipping insertion in model container [2022-01-11 05:38:22,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:38:21" (2/4) ... [2022-01-11 05:38:22,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daef6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:38:22, skipping insertion in model container [2022-01-11 05:38:22,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:38:22" (3/4) ... [2022-01-11 05:38:22,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daef6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:38:22, skipping insertion in model container [2022-01-11 05:38:22,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:38:22" (4/4) ... [2022-01-11 05:38:22,870 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product37.cil.cTransformedIcfg [2022-01-11 05:38:22,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:38:22,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:38:22,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:38:22,959 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:38:22,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:38:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 395 states, 392 states have (on average 1.6760204081632653) internal successors, (657), 394 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:22,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 05:38:22,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:22,998 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] [2022-01-11 05:38:22,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2137725108, now seen corresponding path program 1 times [2022-01-11 05:38:23,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:23,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116724909] [2022-01-11 05:38:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:23,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:23,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:23,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116724909] [2022-01-11 05:38:23,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116724909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:23,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:23,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:38:23,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033757676] [2022-01-11 05:38:23,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:23,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:38:23,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:38:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:38:23,358 INFO L87 Difference]: Start difference. First operand has 395 states, 392 states have (on average 1.6760204081632653) internal successors, (657), 394 states have internal predecessors, (657), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:23,392 INFO L93 Difference]: Finished difference Result 524 states and 846 transitions. [2022-01-11 05:38:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:38:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-11 05:38:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:23,411 INFO L225 Difference]: With dead ends: 524 [2022-01-11 05:38:23,412 INFO L226 Difference]: Without dead ends: 370 [2022-01-11 05:38:23,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:38:23,419 INFO L933 BasicCegarLoop]: 651 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, 651 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:23,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:23,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-11 05:38:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-01-11 05:38:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 368 states have (on average 1.6820652173913044) internal successors, (619), 369 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 619 transitions. [2022-01-11 05:38:23,492 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 619 transitions. Word has length 52 [2022-01-11 05:38:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:23,492 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 619 transitions. [2022-01-11 05:38:23,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 619 transitions. [2022-01-11 05:38:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 05:38:23,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:23,496 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] [2022-01-11 05:38:23,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:38:23,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 346514842, now seen corresponding path program 1 times [2022-01-11 05:38:23,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:23,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829242260] [2022-01-11 05:38:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:23,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:23,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:23,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829242260] [2022-01-11 05:38:23,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829242260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:23,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:23,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:23,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661697053] [2022-01-11 05:38:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:23,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:23,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:23,712 INFO L87 Difference]: Start difference. First operand 370 states and 619 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:23,789 INFO L93 Difference]: Finished difference Result 721 states and 1210 transitions. [2022-01-11 05:38:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-11 05:38:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:23,793 INFO L225 Difference]: With dead ends: 721 [2022-01-11 05:38:23,793 INFO L226 Difference]: Without dead ends: 370 [2022-01-11 05:38:23,796 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 [2022-01-11 05:38:23,797 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 594 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 612 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 [2022-01-11 05:38:23,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 612 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-11 05:38:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-01-11 05:38:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 368 states have (on average 1.6766304347826086) internal successors, (617), 369 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 617 transitions. [2022-01-11 05:38:23,817 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 617 transitions. Word has length 53 [2022-01-11 05:38:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:23,819 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 617 transitions. [2022-01-11 05:38:23,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 617 transitions. [2022-01-11 05:38:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 05:38:23,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:23,827 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] [2022-01-11 05:38:23,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:38:23,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1608529434, now seen corresponding path program 1 times [2022-01-11 05:38:23,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:23,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808705929] [2022-01-11 05:38:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:23,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:23,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:23,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808705929] [2022-01-11 05:38:23,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808705929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:23,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:23,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:38:23,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068531908] [2022-01-11 05:38:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:23,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:38:23,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:38:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:23,949 INFO L87 Difference]: Start difference. First operand 370 states and 617 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:24,138 INFO L93 Difference]: Finished difference Result 1718 states and 2881 transitions. [2022-01-11 05:38:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:38:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-11 05:38:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:24,146 INFO L225 Difference]: With dead ends: 1718 [2022-01-11 05:38:24,146 INFO L226 Difference]: Without dead ends: 1372 [2022-01-11 05:38:24,148 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 [2022-01-11 05:38:24,152 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 2868 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2868 SdHoareTripleChecker+Valid, 2880 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 [2022-01-11 05:38:24,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2868 Valid, 2880 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:38:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-01-11 05:38:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 370. [2022-01-11 05:38:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 368 states have (on average 1.673913043478261) internal successors, (616), 369 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 616 transitions. [2022-01-11 05:38:24,177 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 616 transitions. Word has length 55 [2022-01-11 05:38:24,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:24,177 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 616 transitions. [2022-01-11 05:38:24,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 616 transitions. [2022-01-11 05:38:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 05:38:24,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:24,178 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] [2022-01-11 05:38:24,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:38:24,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1129588198, now seen corresponding path program 1 times [2022-01-11 05:38:24,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:24,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778960999] [2022-01-11 05:38:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:24,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:24,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:24,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778960999] [2022-01-11 05:38:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778960999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:24,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:24,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060419828] [2022-01-11 05:38:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:24,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:24,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:24,294 INFO L87 Difference]: Start difference. First operand 370 states and 616 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:24,335 INFO L93 Difference]: Finished difference Result 725 states and 1210 transitions. [2022-01-11 05:38:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:24,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 05:38:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:24,338 INFO L225 Difference]: With dead ends: 725 [2022-01-11 05:38:24,338 INFO L226 Difference]: Without dead ends: 384 [2022-01-11 05:38:24,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:24,343 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 595 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 652 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 [2022-01-11 05:38:24,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 652 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-01-11 05:38:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 370. [2022-01-11 05:38:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 368 states have (on average 1.671195652173913) internal successors, (615), 369 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 615 transitions. [2022-01-11 05:38:24,361 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 615 transitions. Word has length 56 [2022-01-11 05:38:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:24,362 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 615 transitions. [2022-01-11 05:38:24,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 615 transitions. [2022-01-11 05:38:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 05:38:24,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:24,364 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] [2022-01-11 05:38:24,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:38:24,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -585835973, now seen corresponding path program 1 times [2022-01-11 05:38:24,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:24,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693563621] [2022-01-11 05:38:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:24,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:24,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:24,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693563621] [2022-01-11 05:38:24,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693563621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:24,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:24,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:38:24,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250569621] [2022-01-11 05:38:24,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:24,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:38:24,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:38:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:24,479 INFO L87 Difference]: Start difference. First operand 370 states and 615 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:24,594 INFO L93 Difference]: Finished difference Result 1044 states and 1745 transitions. [2022-01-11 05:38:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:38:24,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-11 05:38:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:24,597 INFO L225 Difference]: With dead ends: 1044 [2022-01-11 05:38:24,597 INFO L226 Difference]: Without dead ends: 708 [2022-01-11 05:38:24,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:38:24,598 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 2791 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2791 SdHoareTripleChecker+Valid, 1262 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 [2022-01-11 05:38:24,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2791 Valid, 1262 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:38:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-01-11 05:38:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 370. [2022-01-11 05:38:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 368 states have (on average 1.6657608695652173) internal successors, (613), 369 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 613 transitions. [2022-01-11 05:38:24,624 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 613 transitions. Word has length 57 [2022-01-11 05:38:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:24,624 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 613 transitions. [2022-01-11 05:38:24,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 613 transitions. [2022-01-11 05:38:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:38:24,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:24,625 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] [2022-01-11 05:38:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:38:24,625 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 35564824, now seen corresponding path program 1 times [2022-01-11 05:38:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459277091] [2022-01-11 05:38:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:24,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:24,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459277091] [2022-01-11 05:38:24,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459277091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:24,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:24,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:24,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935515863] [2022-01-11 05:38:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:24,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:38:24,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:38:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:24,747 INFO L87 Difference]: Start difference. First operand 370 states and 613 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:24,846 INFO L93 Difference]: Finished difference Result 882 states and 1429 transitions. [2022-01-11 05:38:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:38:24,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-11 05:38:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:24,850 INFO L225 Difference]: With dead ends: 882 [2022-01-11 05:38:24,850 INFO L226 Difference]: Without dead ends: 811 [2022-01-11 05:38:24,851 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 [2022-01-11 05:38:24,852 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 813 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:24,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 2429 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-01-11 05:38:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 694. [2022-01-11 05:38:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 1.6820809248554913) internal successors, (1164), 693 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1164 transitions. [2022-01-11 05:38:24,893 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1164 transitions. Word has length 59 [2022-01-11 05:38:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:24,895 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 1164 transitions. [2022-01-11 05:38:24,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1164 transitions. [2022-01-11 05:38:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 05:38:24,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:24,896 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] [2022-01-11 05:38:24,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:38:24,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2126371296, now seen corresponding path program 1 times [2022-01-11 05:38:24,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:24,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838477123] [2022-01-11 05:38:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:24,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:25,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:25,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838477123] [2022-01-11 05:38:25,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838477123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:25,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:25,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:25,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077235849] [2022-01-11 05:38:25,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:25,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:38:25,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:38:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:25,005 INFO L87 Difference]: Start difference. First operand 694 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:25,182 INFO L93 Difference]: Finished difference Result 1690 states and 2758 transitions. [2022-01-11 05:38:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:38:25,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-11 05:38:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:25,188 INFO L225 Difference]: With dead ends: 1690 [2022-01-11 05:38:25,189 INFO L226 Difference]: Without dead ends: 1567 [2022-01-11 05:38:25,189 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 [2022-01-11 05:38:25,190 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 734 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:25,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2495 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2022-01-11 05:38:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1339. [2022-01-11 05:38:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1337 states have (on average 1.6948391922213912) internal successors, (2266), 1338 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2266 transitions. [2022-01-11 05:38:25,275 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2266 transitions. Word has length 60 [2022-01-11 05:38:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:25,275 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 2266 transitions. [2022-01-11 05:38:25,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2266 transitions. [2022-01-11 05:38:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:38:25,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:25,277 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] [2022-01-11 05:38:25,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:38:25,277 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1127134844, now seen corresponding path program 1 times [2022-01-11 05:38:25,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:25,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875000263] [2022-01-11 05:38:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:25,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:25,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:25,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875000263] [2022-01-11 05:38:25,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875000263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:25,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:25,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:25,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409817431] [2022-01-11 05:38:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:25,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:38:25,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:38:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:25,377 INFO L87 Difference]: Start difference. First operand 1339 states and 2266 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:25,580 INFO L93 Difference]: Finished difference Result 3270 states and 5374 transitions. [2022-01-11 05:38:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:38:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 05:38:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:25,590 INFO L225 Difference]: With dead ends: 3270 [2022-01-11 05:38:25,590 INFO L226 Difference]: Without dead ends: 2924 [2022-01-11 05:38:25,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:38:25,592 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 733 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:25,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 2495 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-01-11 05:38:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2533. [2022-01-11 05:38:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 2531 states have (on average 1.708020545239036) internal successors, (4323), 2532 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4323 transitions. [2022-01-11 05:38:25,708 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4323 transitions. Word has length 61 [2022-01-11 05:38:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:25,708 INFO L470 AbstractCegarLoop]: Abstraction has 2533 states and 4323 transitions. [2022-01-11 05:38:25,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4323 transitions. [2022-01-11 05:38:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 05:38:25,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:25,711 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:25,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:38:25,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1177945426, now seen corresponding path program 1 times [2022-01-11 05:38:25,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225337326] [2022-01-11 05:38:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:25,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:25,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225337326] [2022-01-11 05:38:25,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225337326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:25,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:25,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:25,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367809325] [2022-01-11 05:38:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:25,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:25,765 INFO L87 Difference]: Start difference. First operand 2533 states and 4323 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:25,989 INFO L93 Difference]: Finished difference Result 7109 states and 12103 transitions. [2022-01-11 05:38:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 05:38:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:26,004 INFO L225 Difference]: With dead ends: 7109 [2022-01-11 05:38:26,004 INFO L226 Difference]: Without dead ends: 4613 [2022-01-11 05:38:26,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:26,008 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 558 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:26,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 1124 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2022-01-11 05:38:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 3933. [2022-01-11 05:38:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3933 states, 3931 states have (on average 1.7318748410073772) internal successors, (6808), 3932 states have internal predecessors, (6808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3933 states to 3933 states and 6808 transitions. [2022-01-11 05:38:26,213 INFO L78 Accepts]: Start accepts. Automaton has 3933 states and 6808 transitions. Word has length 72 [2022-01-11 05:38:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:26,213 INFO L470 AbstractCegarLoop]: Abstraction has 3933 states and 6808 transitions. [2022-01-11 05:38:26,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3933 states and 6808 transitions. [2022-01-11 05:38:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:38:26,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:26,216 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:26,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:38:26,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:26,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1069003575, now seen corresponding path program 1 times [2022-01-11 05:38:26,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:26,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133268775] [2022-01-11 05:38:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:26,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:26,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133268775] [2022-01-11 05:38:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133268775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:26,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:26,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:26,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560788404] [2022-01-11 05:38:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:26,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:26,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:26,261 INFO L87 Difference]: Start difference. First operand 3933 states and 6808 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:26,614 INFO L93 Difference]: Finished difference Result 11629 states and 20166 transitions. [2022-01-11 05:38:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:26,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 05:38:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:26,642 INFO L225 Difference]: With dead ends: 11629 [2022-01-11 05:38:26,642 INFO L226 Difference]: Without dead ends: 7733 [2022-01-11 05:38:26,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:26,651 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 556 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:26,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1210 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7733 states. [2022-01-11 05:38:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7733 to 7053. [2022-01-11 05:38:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7053 states, 7051 states have (on average 1.7554956743724295) internal successors, (12378), 7052 states have internal predecessors, (12378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7053 states to 7053 states and 12378 transitions. [2022-01-11 05:38:27,053 INFO L78 Accepts]: Start accepts. Automaton has 7053 states and 12378 transitions. Word has length 73 [2022-01-11 05:38:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:27,054 INFO L470 AbstractCegarLoop]: Abstraction has 7053 states and 12378 transitions. [2022-01-11 05:38:27,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7053 states and 12378 transitions. [2022-01-11 05:38:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:38:27,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:27,057 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:27,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:38:27,058 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1031707253, now seen corresponding path program 1 times [2022-01-11 05:38:27,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:27,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545945326] [2022-01-11 05:38:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:27,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:27,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545945326] [2022-01-11 05:38:27,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545945326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:27,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:27,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:27,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374191547] [2022-01-11 05:38:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:27,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:27,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:27,117 INFO L87 Difference]: Start difference. First operand 7053 states and 12378 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) [2022-01-11 05:38:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:27,652 INFO L93 Difference]: Finished difference Result 20893 states and 36716 transitions. [2022-01-11 05:38:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:27,654 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 [2022-01-11 05:38:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:27,705 INFO L225 Difference]: With dead ends: 20893 [2022-01-11 05:38:27,705 INFO L226 Difference]: Without dead ends: 13877 [2022-01-11 05:38:27,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:27,714 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 554 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:27,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 1210 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13877 states. [2022-01-11 05:38:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13877 to 13197. [2022-01-11 05:38:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13197 states, 13195 states have (on average 1.7690034103827208) internal successors, (23342), 13196 states have internal predecessors, (23342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13197 states to 13197 states and 23342 transitions. [2022-01-11 05:38:28,311 INFO L78 Accepts]: Start accepts. Automaton has 13197 states and 23342 transitions. Word has length 74 [2022-01-11 05:38:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:28,311 INFO L470 AbstractCegarLoop]: Abstraction has 13197 states and 23342 transitions. [2022-01-11 05:38:28,312 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) [2022-01-11 05:38:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13197 states and 23342 transitions. [2022-01-11 05:38:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 05:38:28,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:28,319 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:28,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:38:28,319 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2114336097, now seen corresponding path program 1 times [2022-01-11 05:38:28,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410151364] [2022-01-11 05:38:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:28,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:28,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:28,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410151364] [2022-01-11 05:38:28,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410151364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:28,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:28,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:28,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115499729] [2022-01-11 05:38:28,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:28,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:28,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:28,374 INFO L87 Difference]: Start difference. First operand 13197 states and 23342 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:29,137 INFO L93 Difference]: Finished difference Result 37469 states and 66216 transitions. [2022-01-11 05:38:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 05:38:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:29,193 INFO L225 Difference]: With dead ends: 37469 [2022-01-11 05:38:29,193 INFO L226 Difference]: Without dead ends: 24309 [2022-01-11 05:38:29,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:29,210 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 552 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:29,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 1162 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24309 states. [2022-01-11 05:38:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24309 to 23629. [2022-01-11 05:38:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23629 states, 23627 states have (on average 1.7711093240783848) internal successors, (41846), 23628 states have internal predecessors, (41846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 41846 transitions. [2022-01-11 05:38:30,337 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 41846 transitions. Word has length 75 [2022-01-11 05:38:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:30,338 INFO L470 AbstractCegarLoop]: Abstraction has 23629 states and 41846 transitions. [2022-01-11 05:38:30,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 41846 transitions. [2022-01-11 05:38:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 05:38:30,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:30,344 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:30,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:38:30,344 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash 257605794, now seen corresponding path program 1 times [2022-01-11 05:38:30,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:30,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595075204] [2022-01-11 05:38:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:30,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:30,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595075204] [2022-01-11 05:38:30,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595075204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:30,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:30,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:38:30,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637711643] [2022-01-11 05:38:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:30,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:38:30,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:38:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:30,392 INFO L87 Difference]: Start difference. First operand 23629 states and 41846 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:31,690 INFO L93 Difference]: Finished difference Result 66717 states and 118016 transitions. [2022-01-11 05:38:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:38:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 05:38:31,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:31,803 INFO L225 Difference]: With dead ends: 66717 [2022-01-11 05:38:31,804 INFO L226 Difference]: Without dead ends: 43125 [2022-01-11 05:38:31,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:38:31,840 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 550 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:31,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1162 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2022-01-11 05:38:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 42445. [2022-01-11 05:38:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42445 states, 42443 states have (on average 1.7689136017717881) internal successors, (75078), 42444 states have internal predecessors, (75078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42445 states to 42445 states and 75078 transitions. [2022-01-11 05:38:33,596 INFO L78 Accepts]: Start accepts. Automaton has 42445 states and 75078 transitions. Word has length 76 [2022-01-11 05:38:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:33,596 INFO L470 AbstractCegarLoop]: Abstraction has 42445 states and 75078 transitions. [2022-01-11 05:38:33,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 42445 states and 75078 transitions. [2022-01-11 05:38:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 05:38:33,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:33,604 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:33,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:38:33,604 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1437325201, now seen corresponding path program 1 times [2022-01-11 05:38:33,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467296453] [2022-01-11 05:38:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:33,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:38:33,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:33,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467296453] [2022-01-11 05:38:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467296453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:33,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:33,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:33,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322234126] [2022-01-11 05:38:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:33,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:38:33,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:38:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:38:33,694 INFO L87 Difference]: Start difference. First operand 42445 states and 75078 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:34,602 INFO L93 Difference]: Finished difference Result 47516 states and 84006 transitions. [2022-01-11 05:38:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:38:34,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 05:38:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:34,665 INFO L225 Difference]: With dead ends: 47516 [2022-01-11 05:38:34,665 INFO L226 Difference]: Without dead ends: 26257 [2022-01-11 05:38:34,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:38:34,697 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 951 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:34,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 1444 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26257 states. [2022-01-11 05:38:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26257 to 21201. [2022-01-11 05:38:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21201 states, 21199 states have (on average 1.7606019151846786) internal successors, (37323), 21200 states have internal predecessors, (37323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21201 states to 21201 states and 37323 transitions. [2022-01-11 05:38:35,704 INFO L78 Accepts]: Start accepts. Automaton has 21201 states and 37323 transitions. Word has length 77 [2022-01-11 05:38:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:35,704 INFO L470 AbstractCegarLoop]: Abstraction has 21201 states and 37323 transitions. [2022-01-11 05:38:35,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 21201 states and 37323 transitions. [2022-01-11 05:38:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 05:38:35,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:35,710 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:35,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:38:35,711 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1992486527, now seen corresponding path program 1 times [2022-01-11 05:38:35,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043383731] [2022-01-11 05:38:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:35,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:38:35,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:35,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043383731] [2022-01-11 05:38:35,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043383731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:35,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:35,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:38:35,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787693910] [2022-01-11 05:38:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:35,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:38:35,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:35,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:38:35,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:38:35,842 INFO L87 Difference]: Start difference. First operand 21201 states and 37323 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:37,162 INFO L93 Difference]: Finished difference Result 23418 states and 40424 transitions. [2022-01-11 05:38:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 05:38:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 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 79 [2022-01-11 05:38:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:37,208 INFO L225 Difference]: With dead ends: 23418 [2022-01-11 05:38:37,208 INFO L226 Difference]: Without dead ends: 23187 [2022-01-11 05:38:37,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2022-01-11 05:38:37,217 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 2068 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 5318 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:38:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2022-01-11 05:38:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 21435. [2022-01-11 05:38:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21435 states, 21433 states have (on average 1.7570568749125182) internal successors, (37659), 21434 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21435 states to 21435 states and 37659 transitions. [2022-01-11 05:38:38,328 INFO L78 Accepts]: Start accepts. Automaton has 21435 states and 37659 transitions. Word has length 79 [2022-01-11 05:38:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:38,328 INFO L470 AbstractCegarLoop]: Abstraction has 21435 states and 37659 transitions. [2022-01-11 05:38:38,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 21435 states and 37659 transitions. [2022-01-11 05:38:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:38:38,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:38,335 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:38,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:38:38,335 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash -709028864, now seen corresponding path program 1 times [2022-01-11 05:38:38,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:38,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694830967] [2022-01-11 05:38:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:38,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:38:38,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:38,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694830967] [2022-01-11 05:38:38,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694830967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:38,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:38,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:38,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756718315] [2022-01-11 05:38:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:38,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:38:38,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:38:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:38:38,399 INFO L87 Difference]: Start difference. First operand 21435 states and 37659 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:39,163 INFO L93 Difference]: Finished difference Result 21997 states and 38452 transitions. [2022-01-11 05:38:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:38:39,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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 80 [2022-01-11 05:38:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:39,198 INFO L225 Difference]: With dead ends: 21997 [2022-01-11 05:38:39,199 INFO L226 Difference]: Without dead ends: 21715 [2022-01-11 05:38:39,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:39,206 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 370 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:39,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1611 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21715 states. [2022-01-11 05:38:39,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21715 to 21435. [2022-01-11 05:38:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21435 states, 21433 states have (on average 1.756916903839873) internal successors, (37656), 21434 states have internal predecessors, (37656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21435 states to 21435 states and 37656 transitions. [2022-01-11 05:38:39,999 INFO L78 Accepts]: Start accepts. Automaton has 21435 states and 37656 transitions. Word has length 80 [2022-01-11 05:38:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:40,000 INFO L470 AbstractCegarLoop]: Abstraction has 21435 states and 37656 transitions. [2022-01-11 05:38:40,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21435 states and 37656 transitions. [2022-01-11 05:38:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:38:40,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:38:40,006 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:38:40,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:38:40,006 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:38:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:38:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -776035617, now seen corresponding path program 1 times [2022-01-11 05:38:40,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:38:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149169570] [2022-01-11 05:38:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:38:40,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:38:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:38:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:38:40,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:38:40,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149169570] [2022-01-11 05:38:40,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149169570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:38:40,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:38:40,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:38:40,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311403190] [2022-01-11 05:38:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:38:40,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:38:40,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:38:40,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:38:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:38:40,097 INFO L87 Difference]: Start difference. First operand 21435 states and 37656 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:38:40,901 INFO L93 Difference]: Finished difference Result 21609 states and 37896 transitions. [2022-01-11 05:38:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:38:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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 80 [2022-01-11 05:38:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:38:40,902 INFO L225 Difference]: With dead ends: 21609 [2022-01-11 05:38:40,902 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:38:40,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:38:40,917 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 161 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:38:40,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1821 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:38:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:38:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:38:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:38:40,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-01-11 05:38:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:38:40,918 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:38:40,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:38:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:38:40,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:38:40,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 05:38:40,921 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 05:38:40,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:38:40,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:38:58,689 WARN L228 SmtUtils]: Spent 16.12s on a formula simplification. DAG size of input: 93 DAG size of output: 93 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)