/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:50:54,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:50:54,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:50:54,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:50:54,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:50:54,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:50:54,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:50:54,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:50:54,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:50:54,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:50:54,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:50:54,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:50:54,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:50:54,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:50:54,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:50:54,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:50:54,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:50:54,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:50:54,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:50:54,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:50:54,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:50:54,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:50:54,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:50:54,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:50:54,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:50:54,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:50:54,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:50:54,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:50:54,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:50:54,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:50:54,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:50:54,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:50:54,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:50:54,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:50:54,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:50:54,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:50:54,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:50:54,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:50:54,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:50:54,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:50:54,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:50:54,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:50:54,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:50:54,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:50:54,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:50:54,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:50:54,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:50:54,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:50:54,839 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:50:54,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:50:54,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:50:54,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:50:54,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:50:54,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:54,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:50:54,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:50:54,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:50:54,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:50:54,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:50:54,842 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:50:54,842 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:50:55,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:50:55,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:50:55,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:50:55,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:50:55,038 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:50:55,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2022-01-10 23:50:55,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f669e1/8bfe80e2ae974249aa5e687c34da2a65/FLAG8d9df8220 [2022-01-10 23:50:55,537 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:50:55,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2022-01-10 23:50:55,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f669e1/8bfe80e2ae974249aa5e687c34da2a65/FLAG8d9df8220 [2022-01-10 23:50:55,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f669e1/8bfe80e2ae974249aa5e687c34da2a65 [2022-01-10 23:50:55,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:50:55,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:50:55,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:55,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:50:55,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:50:55,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:55" (1/1) ... [2022-01-10 23:50:55,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8fc84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:55, skipping insertion in model container [2022-01-10 23:50:55,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:55" (1/1) ... [2022-01-10 23:50:55,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:50:55,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:55,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-01-10 23:50:56,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:56,036 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:50:56,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:56,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-01-10 23:50:56,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:56,112 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:50:56,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-01-10 23:50:56,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:56,196 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:50:56,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56 WrapperNode [2022-01-10 23:50:56,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:56,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:56,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:50:56,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:50:56,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,293 INFO L137 Inliner]: procedures = 133, calls = 217, calls flagged for inlining = 128, calls inlined = 161, statements flattened = 2375 [2022-01-10 23:50:56,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:56,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:50:56,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:50:56,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:50:56,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:50:56,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:50:56,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:50:56,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:50:56,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (1/1) ... [2022-01-10 23:50:56,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:56,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:50:56,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:50:56,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:50:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:50:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:50:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:50:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:50:56,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:50:56,607 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:50:56,609 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:50:57,564 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:50:57,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:50:57,577 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:50:57,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:57 BoogieIcfgContainer [2022-01-10 23:50:57,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:50:57,581 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:50:57,581 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:50:57,582 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:50:57,584 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:57" (1/1) ... [2022-01-10 23:50:57,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:57 BasicIcfg [2022-01-10 23:50:57,843 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:50:57,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:50:57,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:50:57,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:50:57,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:50:55" (1/4) ... [2022-01-10 23:50:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dab6121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:57, skipping insertion in model container [2022-01-10 23:50:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:56" (2/4) ... [2022-01-10 23:50:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dab6121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:57, skipping insertion in model container [2022-01-10 23:50:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:57" (3/4) ... [2022-01-10 23:50:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dab6121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:50:57, skipping insertion in model container [2022-01-10 23:50:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:57" (4/4) ... [2022-01-10 23:50:57,848 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.cTransformedIcfg [2022-01-10 23:50:57,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:50:57,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:50:57,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:50:57,902 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:50:57,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:50:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 547 states have (on average 1.6873857404021937) internal successors, (923), 549 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:50:57,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:57,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:57,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 685087447, now seen corresponding path program 1 times [2022-01-10 23:50:57,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:57,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743625017] [2022-01-10 23:50:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:57,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:58,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:58,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743625017] [2022-01-10 23:50:58,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743625017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:58,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:58,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:50:58,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612589078] [2022-01-10 23:50:58,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:58,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:50:58,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:50:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:58,428 INFO L87 Difference]: Start difference. First operand has 550 states, 547 states have (on average 1.6873857404021937) internal successors, (923), 549 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:58,501 INFO L93 Difference]: Finished difference Result 839 states and 1386 transitions. [2022-01-10 23:50:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:50:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:50:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:58,523 INFO L225 Difference]: With dead ends: 839 [2022-01-10 23:50:58,523 INFO L226 Difference]: Without dead ends: 526 [2022-01-10 23:50:58,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:58,533 INFO L933 BasicCegarLoop]: 917 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, 917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:58,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-01-10 23:50:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2022-01-10 23:50:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.6946564885496183) internal successors, (888), 525 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 888 transitions. [2022-01-10 23:50:58,596 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 888 transitions. Word has length 70 [2022-01-10 23:50:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:58,597 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 888 transitions. [2022-01-10 23:50:58,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 888 transitions. [2022-01-10 23:50:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:50:58,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:58,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:58,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:50:58,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 908870739, now seen corresponding path program 1 times [2022-01-10 23:50:58,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:58,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219376106] [2022-01-10 23:50:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:58,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:58,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219376106] [2022-01-10 23:50:58,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219376106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:58,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:58,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:58,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588482677] [2022-01-10 23:50:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:58,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:58,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:58,837 INFO L87 Difference]: Start difference. First operand 526 states and 888 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:58,951 INFO L93 Difference]: Finished difference Result 1033 states and 1748 transitions. [2022-01-10 23:50:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:50:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:58,955 INFO L225 Difference]: With dead ends: 1033 [2022-01-10 23:50:58,955 INFO L226 Difference]: Without dead ends: 526 [2022-01-10 23:50:58,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:58,959 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 863 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:58,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 882 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2022-01-10 23:50:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2022-01-10 23:50:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.6908396946564885) internal successors, (886), 525 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2022-01-10 23:50:59,010 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 71 [2022-01-10 23:50:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:59,010 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2022-01-10 23:50:59,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2022-01-10 23:50:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:50:59,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:59,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:59,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:50:59,012 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash 234424851, now seen corresponding path program 1 times [2022-01-10 23:50:59,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:59,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032737950] [2022-01-10 23:50:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:59,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:59,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:59,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032737950] [2022-01-10 23:50:59,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032737950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:59,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:59,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:59,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178550169] [2022-01-10 23:50:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:59,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:59,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:59,162 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:59,371 INFO L93 Difference]: Finished difference Result 2498 states and 4226 transitions. [2022-01-10 23:50:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:50:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:50:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:59,380 INFO L225 Difference]: With dead ends: 2498 [2022-01-10 23:50:59,381 INFO L226 Difference]: Without dead ends: 1996 [2022-01-10 23:50:59,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:50:59,387 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 4213 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:59,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4213 Valid, 4225 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2022-01-10 23:50:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 526. [2022-01-10 23:50:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.6889312977099236) internal successors, (885), 525 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 885 transitions. [2022-01-10 23:50:59,424 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 885 transitions. Word has length 73 [2022-01-10 23:50:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:59,426 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 885 transitions. [2022-01-10 23:50:59,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 885 transitions. [2022-01-10 23:50:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:50:59,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:59,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:59,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:50:59,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:59,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1959257149, now seen corresponding path program 1 times [2022-01-10 23:50:59,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:59,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632407205] [2022-01-10 23:50:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:59,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:59,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632407205] [2022-01-10 23:50:59,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632407205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:59,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:59,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:59,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797822005] [2022-01-10 23:50:59,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:59,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:59,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:59,548 INFO L87 Difference]: Start difference. First operand 526 states and 885 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:59,588 INFO L93 Difference]: Finished difference Result 1037 states and 1748 transitions. [2022-01-10 23:50:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:59,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:50:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:59,590 INFO L225 Difference]: With dead ends: 1037 [2022-01-10 23:50:59,590 INFO L226 Difference]: Without dead ends: 540 [2022-01-10 23:50:59,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:59,592 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 864 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:59,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 921 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-10 23:50:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 526. [2022-01-10 23:50:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.6870229007633588) internal successors, (884), 525 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 884 transitions. [2022-01-10 23:50:59,636 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 884 transitions. Word has length 74 [2022-01-10 23:50:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:59,636 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 884 transitions. [2022-01-10 23:50:59,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 884 transitions. [2022-01-10 23:50:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:50:59,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:59,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:59,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:50:59,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -733344460, now seen corresponding path program 1 times [2022-01-10 23:50:59,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:59,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863951495] [2022-01-10 23:50:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:59,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:59,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:59,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863951495] [2022-01-10 23:50:59,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863951495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:59,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:59,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:59,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245381851] [2022-01-10 23:50:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:59,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:59,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:59,718 INFO L87 Difference]: Start difference. First operand 526 states and 884 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:59,845 INFO L93 Difference]: Finished difference Result 1512 states and 2552 transitions. [2022-01-10 23:50:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:50:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 23:50:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:59,849 INFO L225 Difference]: With dead ends: 1512 [2022-01-10 23:50:59,849 INFO L226 Difference]: Without dead ends: 1020 [2022-01-10 23:50:59,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:59,850 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 4136 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:59,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4136 Valid, 1800 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2022-01-10 23:50:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 526. [2022-01-10 23:50:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.683206106870229) internal successors, (882), 525 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 882 transitions. [2022-01-10 23:50:59,880 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 882 transitions. Word has length 75 [2022-01-10 23:50:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 882 transitions. [2022-01-10 23:50:59,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 882 transitions. [2022-01-10 23:50:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:50:59,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:59,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:59,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:50:59,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2000959505, now seen corresponding path program 1 times [2022-01-10 23:50:59,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154023708] [2022-01-10 23:50:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:59,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:00,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:00,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154023708] [2022-01-10 23:51:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154023708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:00,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:51:00,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452672958] [2022-01-10 23:51:00,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:00,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:51:00,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:00,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:51:00,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:51:00,026 INFO L87 Difference]: Start difference. First operand 526 states and 882 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:00,537 INFO L93 Difference]: Finished difference Result 3404 states and 5622 transitions. [2022-01-10 23:51:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:51:00,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:51:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:00,548 INFO L225 Difference]: With dead ends: 3404 [2022-01-10 23:51:00,549 INFO L226 Difference]: Without dead ends: 3156 [2022-01-10 23:51:00,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:51:00,552 INFO L933 BasicCegarLoop]: 1418 mSDtfsCounter, 5846 mSDsluCounter, 5338 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5846 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:00,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5846 Valid, 6756 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2022-01-10 23:51:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 922. [2022-01-10 23:51:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.6869565217391305) internal successors, (1552), 921 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1552 transitions. [2022-01-10 23:51:00,645 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1552 transitions. Word has length 77 [2022-01-10 23:51:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:00,646 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1552 transitions. [2022-01-10 23:51:00,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1552 transitions. [2022-01-10 23:51:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:51:00,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:00,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:00,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:51:00,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1055335340, now seen corresponding path program 1 times [2022-01-10 23:51:00,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:00,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685232379] [2022-01-10 23:51:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:00,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:00,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685232379] [2022-01-10 23:51:00,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685232379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:00,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:00,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:51:00,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588098262] [2022-01-10 23:51:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:00,743 INFO L87 Difference]: Start difference. First operand 922 states and 1552 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:00,883 INFO L93 Difference]: Finished difference Result 1615 states and 2660 transitions. [2022-01-10 23:51:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:51:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 23:51:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:00,888 INFO L225 Difference]: With dead ends: 1615 [2022-01-10 23:51:00,888 INFO L226 Difference]: Without dead ends: 1221 [2022-01-10 23:51:00,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:51:00,891 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 2332 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:00,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 2091 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-10 23:51:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 922. [2022-01-10 23:51:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.682608695652174) internal successors, (1548), 921 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1548 transitions. [2022-01-10 23:51:00,953 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1548 transitions. Word has length 78 [2022-01-10 23:51:00,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:00,953 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1548 transitions. [2022-01-10 23:51:00,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1548 transitions. [2022-01-10 23:51:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:51:00,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:00,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:00,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:51:00,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1560556425, now seen corresponding path program 1 times [2022-01-10 23:51:00,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:00,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749442975] [2022-01-10 23:51:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:00,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:01,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:01,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749442975] [2022-01-10 23:51:01,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749442975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:01,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:51:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866961820] [2022-01-10 23:51:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:01,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:01,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:01,030 INFO L87 Difference]: Start difference. First operand 922 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:01,253 INFO L93 Difference]: Finished difference Result 2643 states and 4473 transitions. [2022-01-10 23:51:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:51:01,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 23:51:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:01,259 INFO L225 Difference]: With dead ends: 2643 [2022-01-10 23:51:01,260 INFO L226 Difference]: Without dead ends: 1758 [2022-01-10 23:51:01,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:51:01,263 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 2577 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:01,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2577 Valid, 2496 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-01-10 23:51:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 922. [2022-01-10 23:51:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.6804347826086956) internal successors, (1546), 921 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1546 transitions. [2022-01-10 23:51:01,349 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1546 transitions. Word has length 78 [2022-01-10 23:51:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:01,349 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1546 transitions. [2022-01-10 23:51:01,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1546 transitions. [2022-01-10 23:51:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:51:01,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:01,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:01,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:51:01,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 102098909, now seen corresponding path program 1 times [2022-01-10 23:51:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:01,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722335041] [2022-01-10 23:51:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:01,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:01,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722335041] [2022-01-10 23:51:01,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722335041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:01,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:51:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142238301] [2022-01-10 23:51:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:01,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:51:01,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:51:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:01,490 INFO L87 Difference]: Start difference. First operand 922 states and 1546 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:02,326 INFO L93 Difference]: Finished difference Result 4130 states and 6612 transitions. [2022-01-10 23:51:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:51:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:51:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:02,337 INFO L225 Difference]: With dead ends: 4130 [2022-01-10 23:51:02,337 INFO L226 Difference]: Without dead ends: 3778 [2022-01-10 23:51:02,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:51:02,339 INFO L933 BasicCegarLoop]: 1129 mSDtfsCounter, 7227 mSDsluCounter, 7257 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7227 SdHoareTripleChecker+Valid, 8386 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:02,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7227 Valid, 8386 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:51:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-01-10 23:51:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 1683. [2022-01-10 23:51:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1681 states have (on average 1.6942296252230815) internal successors, (2848), 1682 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2848 transitions. [2022-01-10 23:51:02,454 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2848 transitions. Word has length 79 [2022-01-10 23:51:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:02,454 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2848 transitions. [2022-01-10 23:51:02,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2848 transitions. [2022-01-10 23:51:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:51:02,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:02,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:02,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:51:02,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash -873439533, now seen corresponding path program 1 times [2022-01-10 23:51:02,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:02,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542320312] [2022-01-10 23:51:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:02,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:02,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:02,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542320312] [2022-01-10 23:51:02,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542320312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:02,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:02,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:51:02,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900261782] [2022-01-10 23:51:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:02,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:51:02,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:51:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:02,590 INFO L87 Difference]: Start difference. First operand 1683 states and 2848 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:03,588 INFO L93 Difference]: Finished difference Result 6650 states and 10718 transitions. [2022-01-10 23:51:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:51:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:51:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:03,605 INFO L225 Difference]: With dead ends: 6650 [2022-01-10 23:51:03,606 INFO L226 Difference]: Without dead ends: 6051 [2022-01-10 23:51:03,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:51:03,608 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 8776 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8776 SdHoareTripleChecker+Valid, 6727 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:03,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8776 Valid, 6727 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:51:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2022-01-10 23:51:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 3210. [2022-01-10 23:51:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3208 states have (on average 1.701995012468828) internal successors, (5460), 3209 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 5460 transitions. [2022-01-10 23:51:03,871 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 5460 transitions. Word has length 80 [2022-01-10 23:51:03,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:03,871 INFO L470 AbstractCegarLoop]: Abstraction has 3210 states and 5460 transitions. [2022-01-10 23:51:03,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 5460 transitions. [2022-01-10 23:51:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:51:03,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:03,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:03,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:51:03,875 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash -522639596, now seen corresponding path program 1 times [2022-01-10 23:51:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220825398] [2022-01-10 23:51:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:03,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:03,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:03,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220825398] [2022-01-10 23:51:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220825398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:03,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:51:03,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911687581] [2022-01-10 23:51:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:03,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:51:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:51:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:51:03,965 INFO L87 Difference]: Start difference. First operand 3210 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:04,721 INFO L93 Difference]: Finished difference Result 8726 states and 14632 transitions. [2022-01-10 23:51:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:51:04,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:51:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:04,746 INFO L225 Difference]: With dead ends: 8726 [2022-01-10 23:51:04,746 INFO L226 Difference]: Without dead ends: 8256 [2022-01-10 23:51:04,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:51:04,751 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 4617 mSDsluCounter, 5446 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 7048 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:04,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4617 Valid, 7048 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8256 states. [2022-01-10 23:51:04,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8256 to 3309. [2022-01-10 23:51:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3307 states have (on average 1.6988206833988508) internal successors, (5618), 3308 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 5618 transitions. [2022-01-10 23:51:05,012 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 5618 transitions. Word has length 80 [2022-01-10 23:51:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:05,012 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 5618 transitions. [2022-01-10 23:51:05,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 5618 transitions. [2022-01-10 23:51:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:51:05,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:05,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:05,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:51:05,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1038473564, now seen corresponding path program 1 times [2022-01-10 23:51:05,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:05,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228995213] [2022-01-10 23:51:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:05,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:05,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:05,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228995213] [2022-01-10 23:51:05,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228995213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:05,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:05,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:05,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207735706] [2022-01-10 23:51:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:05,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:05,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:05,110 INFO L87 Difference]: Start difference. First operand 3309 states and 5618 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:06,042 INFO L93 Difference]: Finished difference Result 8683 states and 13998 transitions. [2022-01-10 23:51:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:51:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:06,056 INFO L225 Difference]: With dead ends: 8683 [2022-01-10 23:51:06,056 INFO L226 Difference]: Without dead ends: 7874 [2022-01-10 23:51:06,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:06,058 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 2615 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2615 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:06,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2615 Valid, 3771 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7874 states. [2022-01-10 23:51:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7874 to 4506. [2022-01-10 23:51:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.6594138543516874) internal successors, (7474), 4505 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 7474 transitions. [2022-01-10 23:51:06,459 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 7474 transitions. Word has length 80 [2022-01-10 23:51:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 7474 transitions. [2022-01-10 23:51:06,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 7474 transitions. [2022-01-10 23:51:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:51:06,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:06,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:06,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:51:06,465 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1056828157, now seen corresponding path program 1 times [2022-01-10 23:51:06,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:06,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030266286] [2022-01-10 23:51:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:06,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:06,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:06,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030266286] [2022-01-10 23:51:06,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030266286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:06,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:06,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:51:06,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096416721] [2022-01-10 23:51:06,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:06,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:06,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:06,552 INFO L87 Difference]: Start difference. First operand 4506 states and 7474 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:07,746 INFO L93 Difference]: Finished difference Result 10082 states and 15749 transitions. [2022-01-10 23:51:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:51:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:51:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:07,766 INFO L225 Difference]: With dead ends: 10082 [2022-01-10 23:51:07,767 INFO L226 Difference]: Without dead ends: 8932 [2022-01-10 23:51:07,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:51:07,770 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 1605 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:07,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 4283 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:07,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2022-01-10 23:51:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 4542. [2022-01-10 23:51:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 4540 states have (on average 1.6541850220264318) internal successors, (7510), 4541 states have internal predecessors, (7510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 7510 transitions. [2022-01-10 23:51:08,208 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 7510 transitions. Word has length 82 [2022-01-10 23:51:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:08,209 INFO L470 AbstractCegarLoop]: Abstraction has 4542 states and 7510 transitions. [2022-01-10 23:51:08,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 7510 transitions. [2022-01-10 23:51:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:51:08,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:08,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:08,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:51:08,214 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1546401891, now seen corresponding path program 1 times [2022-01-10 23:51:08,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:08,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521370690] [2022-01-10 23:51:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:08,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:08,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521370690] [2022-01-10 23:51:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521370690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:08,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:08,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:51:08,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11026031] [2022-01-10 23:51:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:08,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:51:08,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:51:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:51:08,345 INFO L87 Difference]: Start difference. First operand 4542 states and 7510 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:09,158 INFO L93 Difference]: Finished difference Result 7521 states and 12000 transitions. [2022-01-10 23:51:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 23:51:09,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:51:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:09,170 INFO L225 Difference]: With dead ends: 7521 [2022-01-10 23:51:09,170 INFO L226 Difference]: Without dead ends: 5471 [2022-01-10 23:51:09,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 23:51:09,174 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 3059 mSDsluCounter, 4873 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 5728 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:09,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3059 Valid, 5728 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2022-01-10 23:51:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 4510. [2022-01-10 23:51:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 1.6481810115350488) internal successors, (7430), 4509 states have internal predecessors, (7430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 7430 transitions. [2022-01-10 23:51:09,743 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 7430 transitions. Word has length 82 [2022-01-10 23:51:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:09,743 INFO L470 AbstractCegarLoop]: Abstraction has 4510 states and 7430 transitions. [2022-01-10 23:51:09,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 7430 transitions. [2022-01-10 23:51:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:51:09,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:09,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:09,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:51:09,749 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1750619140, now seen corresponding path program 1 times [2022-01-10 23:51:09,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244959563] [2022-01-10 23:51:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:09,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:09,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:09,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244959563] [2022-01-10 23:51:09,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244959563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:09,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:09,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:09,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507842600] [2022-01-10 23:51:09,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:09,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:51:09,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:51:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:51:09,822 INFO L87 Difference]: Start difference. First operand 4510 states and 7430 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:11,165 INFO L93 Difference]: Finished difference Result 11748 states and 18348 transitions. [2022-01-10 23:51:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:51:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:51:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:11,180 INFO L225 Difference]: With dead ends: 11748 [2022-01-10 23:51:11,180 INFO L226 Difference]: Without dead ends: 9370 [2022-01-10 23:51:11,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:11,185 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 902 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:11,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 2930 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2022-01-10 23:51:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 4534. [2022-01-10 23:51:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4532 states have (on average 1.6447484554280671) internal successors, (7454), 4533 states have internal predecessors, (7454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 7454 transitions. [2022-01-10 23:51:11,683 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 7454 transitions. Word has length 84 [2022-01-10 23:51:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:11,683 INFO L470 AbstractCegarLoop]: Abstraction has 4534 states and 7454 transitions. [2022-01-10 23:51:11,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 7454 transitions. [2022-01-10 23:51:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:51:11,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:11,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:11,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:51:11,687 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1461198757, now seen corresponding path program 1 times [2022-01-10 23:51:11,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:11,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632773327] [2022-01-10 23:51:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:11,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:11,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:11,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632773327] [2022-01-10 23:51:11,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632773327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:11,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:11,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:11,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949663390] [2022-01-10 23:51:11,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:11,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:11,755 INFO L87 Difference]: Start difference. First operand 4534 states and 7454 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:14,765 INFO L93 Difference]: Finished difference Result 21090 states and 32960 transitions. [2022-01-10 23:51:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:14,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:51:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:14,790 INFO L225 Difference]: With dead ends: 21090 [2022-01-10 23:51:14,790 INFO L226 Difference]: Without dead ends: 18704 [2022-01-10 23:51:14,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:14,796 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 2869 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2869 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:14,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2869 Valid, 4103 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:51:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18704 states. [2022-01-10 23:51:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18704 to 8722. [2022-01-10 23:51:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8722 states, 8720 states have (on average 1.6486238532110091) internal successors, (14376), 8721 states have internal predecessors, (14376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 14376 transitions. [2022-01-10 23:51:15,777 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 14376 transitions. Word has length 84 [2022-01-10 23:51:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:15,778 INFO L470 AbstractCegarLoop]: Abstraction has 8722 states and 14376 transitions. [2022-01-10 23:51:15,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 14376 transitions. [2022-01-10 23:51:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:51:15,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:15,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:15,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:51:15,786 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:15,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1659889992, now seen corresponding path program 1 times [2022-01-10 23:51:15,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:15,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785900505] [2022-01-10 23:51:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:15,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:15,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785900505] [2022-01-10 23:51:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785900505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:15,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:15,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:51:15,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748999747] [2022-01-10 23:51:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:15,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:15,861 INFO L87 Difference]: Start difference. First operand 8722 states and 14376 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:19,011 INFO L93 Difference]: Finished difference Result 25858 states and 40664 transitions. [2022-01-10 23:51:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:51:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:19,041 INFO L225 Difference]: With dead ends: 25858 [2022-01-10 23:51:19,041 INFO L226 Difference]: Without dead ends: 21404 [2022-01-10 23:51:19,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:19,052 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 1050 mSDsluCounter, 3851 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:19,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 5566 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:19,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21404 states. [2022-01-10 23:51:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21404 to 8998. [2022-01-10 23:51:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8998 states, 8996 states have (on average 1.6522899066251668) internal successors, (14864), 8997 states have internal predecessors, (14864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 14864 transitions. [2022-01-10 23:51:20,111 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 14864 transitions. Word has length 84 [2022-01-10 23:51:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:20,111 INFO L470 AbstractCegarLoop]: Abstraction has 8998 states and 14864 transitions. [2022-01-10 23:51:20,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 14864 transitions. [2022-01-10 23:51:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:51:20,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:20,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:20,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:51:20,120 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1002273305, now seen corresponding path program 1 times [2022-01-10 23:51:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:20,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15599493] [2022-01-10 23:51:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:20,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:20,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15599493] [2022-01-10 23:51:20,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15599493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:20,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:20,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:20,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410187427] [2022-01-10 23:51:20,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:20,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:20,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:20,214 INFO L87 Difference]: Start difference. First operand 8998 states and 14864 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:26,050 INFO L93 Difference]: Finished difference Result 41098 states and 64304 transitions. [2022-01-10 23:51:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:26,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:51:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:26,100 INFO L225 Difference]: With dead ends: 41098 [2022-01-10 23:51:26,101 INFO L226 Difference]: Without dead ends: 36528 [2022-01-10 23:51:26,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:26,112 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 3285 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:26,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 3975 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36528 states. [2022-01-10 23:51:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36528 to 17562. [2022-01-10 23:51:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17562 states, 17560 states have (on average 1.6539863325740318) internal successors, (29044), 17561 states have internal predecessors, (29044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17562 states to 17562 states and 29044 transitions. [2022-01-10 23:51:28,314 INFO L78 Accepts]: Start accepts. Automaton has 17562 states and 29044 transitions. Word has length 84 [2022-01-10 23:51:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:28,314 INFO L470 AbstractCegarLoop]: Abstraction has 17562 states and 29044 transitions. [2022-01-10 23:51:28,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 17562 states and 29044 transitions. [2022-01-10 23:51:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:51:28,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:28,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:28,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:51:28,330 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1923106648, now seen corresponding path program 1 times [2022-01-10 23:51:28,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:28,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913360264] [2022-01-10 23:51:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:28,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:28,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913360264] [2022-01-10 23:51:28,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913360264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:28,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:28,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:28,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284020778] [2022-01-10 23:51:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:28,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:28,416 INFO L87 Difference]: Start difference. First operand 17562 states and 29044 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:34,422 INFO L93 Difference]: Finished difference Result 44964 states and 72056 transitions. [2022-01-10 23:51:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:51:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:51:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:34,480 INFO L225 Difference]: With dead ends: 44964 [2022-01-10 23:51:34,481 INFO L226 Difference]: Without dead ends: 41634 [2022-01-10 23:51:34,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:51:34,493 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 1935 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:34,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 3434 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41634 states. [2022-01-10 23:51:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41634 to 35170. [2022-01-10 23:51:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35170 states, 35168 states have (on average 1.6523544131028207) internal successors, (58110), 35169 states have internal predecessors, (58110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35170 states to 35170 states and 58110 transitions. [2022-01-10 23:51:38,914 INFO L78 Accepts]: Start accepts. Automaton has 35170 states and 58110 transitions. Word has length 85 [2022-01-10 23:51:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:38,915 INFO L470 AbstractCegarLoop]: Abstraction has 35170 states and 58110 transitions. [2022-01-10 23:51:38,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 35170 states and 58110 transitions. [2022-01-10 23:51:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:51:38,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:38,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:38,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:51:38,939 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2060604291, now seen corresponding path program 1 times [2022-01-10 23:51:38,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:38,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213810105] [2022-01-10 23:51:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:38,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:39,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:39,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213810105] [2022-01-10 23:51:39,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213810105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:39,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:39,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:51:39,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838101071] [2022-01-10 23:51:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:39,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:51:39,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:51:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:51:39,045 INFO L87 Difference]: Start difference. First operand 35170 states and 58110 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:51,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:51,380 INFO L93 Difference]: Finished difference Result 84112 states and 131767 transitions. [2022-01-10 23:51:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:51:51,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 23:51:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:51,484 INFO L225 Difference]: With dead ends: 84112 [2022-01-10 23:51:51,484 INFO L226 Difference]: Without dead ends: 68906 [2022-01-10 23:51:51,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:51:51,512 INFO L933 BasicCegarLoop]: 1310 mSDtfsCounter, 4376 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 6021 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:51,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4376 Valid, 6021 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:51:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68906 states. [2022-01-10 23:51:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68906 to 40794. [2022-01-10 23:51:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40794 states, 40792 states have (on average 1.6365463816434596) internal successors, (66758), 40793 states have internal predecessors, (66758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40794 states to 40794 states and 66758 transitions. [2022-01-10 23:51:57,436 INFO L78 Accepts]: Start accepts. Automaton has 40794 states and 66758 transitions. Word has length 86 [2022-01-10 23:51:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:57,437 INFO L470 AbstractCegarLoop]: Abstraction has 40794 states and 66758 transitions. [2022-01-10 23:51:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 40794 states and 66758 transitions. [2022-01-10 23:51:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:51:57,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:57,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:57,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:51:57,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:57,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -978088739, now seen corresponding path program 1 times [2022-01-10 23:51:57,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:57,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038989885] [2022-01-10 23:51:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:57,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:57,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038989885] [2022-01-10 23:51:57,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038989885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:57,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:57,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:57,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388977452] [2022-01-10 23:51:57,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:57,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:51:57,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:51:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:51:57,518 INFO L87 Difference]: Start difference. First operand 40794 states and 66758 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)