/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_spec8_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:59:36,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:59:36,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:59:36,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:59:36,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:59:36,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:59:36,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:59:36,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:59:36,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:59:36,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:59:36,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:59:36,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:59:36,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:59:36,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:59:36,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:59:36,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:59:36,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:59:36,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:59:36,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:59:36,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:59:36,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:59:36,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:59:36,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:59:36,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:59:36,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:59:36,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:59:36,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:59:36,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:59:36,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:59:36,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:59:36,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:59:36,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:59:36,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:59:36,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:59:36,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:59:36,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:59:36,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:59:36,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:59:36,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:59:36,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:59:36,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:59:36,922 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 23:59:36,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:59:36,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:59:36,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:59:36,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:59:36,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:59:36,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:59:36,952 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:59:36,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:59:36,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:59:36,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:59:36,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:59:36,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:36,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:59:36,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:59:36,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:59:36,955 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:59:36,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:59:37,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:59:37,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:59:37,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:59:37,169 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:59:37,169 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:59:37,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product12.cil.c [2022-01-10 23:59:37,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191e90b0a/79246442cbdb49a2bc0bd9157390b13a/FLAG76735b83c [2022-01-10 23:59:37,595 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:59:37,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product12.cil.c [2022-01-10 23:59:37,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191e90b0a/79246442cbdb49a2bc0bd9157390b13a/FLAG76735b83c [2022-01-10 23:59:37,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191e90b0a/79246442cbdb49a2bc0bd9157390b13a [2022-01-10 23:59:37,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:59:37,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:59:37,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:37,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:59:37,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:59:37,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:37" (1/1) ... [2022-01-10 23:59:37,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4fc6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:37, skipping insertion in model container [2022-01-10 23:59:37,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:37" (1/1) ... [2022-01-10 23:59:37,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:59:38,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:38,272 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_spec8_product12.cil.c[16969,16982] [2022-01-10 23:59:38,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:38,394 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:59:38,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:38,446 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_spec8_product12.cil.c[16969,16982] [2022-01-10 23:59:38,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:38,528 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:59:38,567 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_spec8_product12.cil.c[16969,16982] [2022-01-10 23:59:38,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:38,645 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:59:38,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38 WrapperNode [2022-01-10 23:59:38,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:38,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:38,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:59:38,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:59:38,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,739 INFO L137 Inliner]: procedures = 125, calls = 191, calls flagged for inlining = 103, calls inlined = 115, statements flattened = 1742 [2022-01-10 23:59:38,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:38,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:59:38,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:59:38,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:59:38,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:59:38,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:59:38,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:59:38,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:59:38,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (1/1) ... [2022-01-10 23:59:38,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:59:38,857 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 23:59:38,876 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 23:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:59:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:59:38,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:59:39,088 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:59:39,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:59:39,826 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:59:39,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:59:39,841 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:59:39,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:39 BoogieIcfgContainer [2022-01-10 23:59:39,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:59:39,844 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:59:39,844 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:59:39,846 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:59:39,849 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:39" (1/1) ... [2022-01-10 23:59:40,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:40 BasicIcfg [2022-01-10 23:59:40,127 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:59:40,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:59:40,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:59:40,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:59:40,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:59:37" (1/4) ... [2022-01-10 23:59:40,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a4f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:40, skipping insertion in model container [2022-01-10 23:59:40,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:38" (2/4) ... [2022-01-10 23:59:40,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a4f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:40, skipping insertion in model container [2022-01-10 23:59:40,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:39" (3/4) ... [2022-01-10 23:59:40,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93a4f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:59:40, skipping insertion in model container [2022-01-10 23:59:40,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:40" (4/4) ... [2022-01-10 23:59:40,133 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product12.cil.cTransformedIcfg [2022-01-10 23:59:40,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:59:40,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:59:40,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:59:40,186 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 23:59:40,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:59:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 416 states have (on average 1.7043269230769231) internal successors, (709), 418 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 23:59:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 23:59:40,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,224 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] [2022-01-10 23:59:40,224 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash -291370400, now seen corresponding path program 1 times [2022-01-10 23:59:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634913987] [2022-01-10 23:59:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:40,542 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 23:59:40,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634913987] [2022-01-10 23:59:40,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634913987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:40,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:40,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:40,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370995083] [2022-01-10 23:59:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:40,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:59:40,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:59:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:40,574 INFO L87 Difference]: Start difference. First operand has 419 states, 416 states have (on average 1.7043269230769231) internal successors, (709), 418 states have internal predecessors, (709), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:59:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,616 INFO L93 Difference]: Finished difference Result 582 states and 966 transitions. [2022-01-10 23:59:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:59:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 23:59:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,634 INFO L225 Difference]: With dead ends: 582 [2022-01-10 23:59:40,634 INFO L226 Difference]: Without dead ends: 374 [2022-01-10 23:59:40,637 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 23:59:40,640 INFO L933 BasicCegarLoop]: 703 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, 703 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 23:59:40,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-10 23:59:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-01-10 23:59:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 372 states have (on average 1.7123655913978495) internal successors, (637), 373 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 23:59:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 637 transitions. [2022-01-10 23:59:40,693 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 637 transitions. Word has length 48 [2022-01-10 23:59:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:40,693 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 637 transitions. [2022-01-10 23:59:40,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:59:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 637 transitions. [2022-01-10 23:59:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 23:59:40,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,695 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] [2022-01-10 23:59:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:59:40,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash 658410190, now seen corresponding path program 1 times [2022-01-10 23:59:40,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515871732] [2022-01-10 23:59:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:40,841 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 23:59:40,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515871732] [2022-01-10 23:59:40,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515871732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:40,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:40,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:40,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450515248] [2022-01-10 23:59:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:40,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:40,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:40,847 INFO L87 Difference]: Start difference. First operand 374 states and 637 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:59:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,879 INFO L93 Difference]: Finished difference Result 451 states and 756 transitions. [2022-01-10 23:59:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 23:59:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,881 INFO L225 Difference]: With dead ends: 451 [2022-01-10 23:59:40,881 INFO L226 Difference]: Without dead ends: 368 [2022-01-10 23:59:40,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:40,884 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 475 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:40,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 734 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-10 23:59:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-01-10 23:59:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7111716621253406) internal successors, (628), 367 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 23:59:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 628 transitions. [2022-01-10 23:59:40,906 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 628 transitions. Word has length 49 [2022-01-10 23:59:40,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:40,907 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 628 transitions. [2022-01-10 23:59:40,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:59:40,907 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 628 transitions. [2022-01-10 23:59:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:59:40,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:40,909 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 23:59:40,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:59:40,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -254068767, now seen corresponding path program 1 times [2022-01-10 23:59:40,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:40,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109669323] [2022-01-10 23:59:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:40,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,140 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 23:59:41,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109669323] [2022-01-10 23:59:41,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109669323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:41,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306704574] [2022-01-10 23:59:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:41,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:41,143 INFO L87 Difference]: Start difference. First operand 368 states and 628 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,198 INFO L93 Difference]: Finished difference Result 717 states and 1228 transitions. [2022-01-10 23:59:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:41,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:59:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,201 INFO L225 Difference]: With dead ends: 717 [2022-01-10 23:59:41,201 INFO L226 Difference]: Without dead ends: 368 [2022-01-10 23:59:41,204 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 23:59:41,208 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 603 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:41,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 623 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-10 23:59:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-01-10 23:59:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7057220708446867) internal successors, (626), 367 states have internal predecessors, (626), 0 states have call successors, (0), 0 states 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 23:59:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 626 transitions. [2022-01-10 23:59:41,223 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 626 transitions. Word has length 82 [2022-01-10 23:59:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,224 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 626 transitions. [2022-01-10 23:59:41,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 626 transitions. [2022-01-10 23:59:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:59:41,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,228 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 23:59:41,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:59:41,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -337639327, now seen corresponding path program 1 times [2022-01-10 23:59:41,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210445287] [2022-01-10 23:59:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,356 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 23:59:41,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210445287] [2022-01-10 23:59:41,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210445287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:41,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438209311] [2022-01-10 23:59:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:41,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:41,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:41,360 INFO L87 Difference]: Start difference. First operand 368 states and 626 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 23:59:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,517 INFO L93 Difference]: Finished difference Result 1708 states and 2926 transitions. [2022-01-10 23:59:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:41,518 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 23:59:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,523 INFO L225 Difference]: With dead ends: 1708 [2022-01-10 23:59:41,524 INFO L226 Difference]: Without dead ends: 1364 [2022-01-10 23:59:41,525 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 23:59:41,529 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 2913 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 2925 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 23:59:41,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 2925 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:41,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-01-10 23:59:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 368. [2022-01-10 23:59:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7029972752043596) internal successors, (625), 367 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 23:59:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 625 transitions. [2022-01-10 23:59:41,549 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 625 transitions. Word has length 84 [2022-01-10 23:59:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,550 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 625 transitions. [2022-01-10 23:59:41,550 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 23:59:41,550 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 625 transitions. [2022-01-10 23:59:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:59:41,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,555 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 23:59:41,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:59:41,556 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:41,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2055278825, now seen corresponding path program 1 times [2022-01-10 23:59:41,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943798357] [2022-01-10 23:59:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,670 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 23:59:41,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943798357] [2022-01-10 23:59:41,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943798357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:41,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867162569] [2022-01-10 23:59:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:41,672 INFO L87 Difference]: Start difference. First operand 368 states and 625 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 23:59:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,705 INFO L93 Difference]: Finished difference Result 721 states and 1228 transitions. [2022-01-10 23:59:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 23:59:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,707 INFO L225 Difference]: With dead ends: 721 [2022-01-10 23:59:41,707 INFO L226 Difference]: Without dead ends: 382 [2022-01-10 23:59:41,707 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 23:59:41,708 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 604 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 661 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 23:59:41,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 661 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:41,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-10 23:59:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 368. [2022-01-10 23:59:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.7002724795640327) internal successors, (624), 367 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 23:59:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 624 transitions. [2022-01-10 23:59:41,727 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 624 transitions. Word has length 85 [2022-01-10 23:59:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,731 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 624 transitions. [2022-01-10 23:59:41,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 23:59:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 624 transitions. [2022-01-10 23:59:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:59:41,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:41,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:59:41,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -760900384, now seen corresponding path program 1 times [2022-01-10 23:59:41,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529357474] [2022-01-10 23:59:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,839 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 23:59:41,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529357474] [2022-01-10 23:59:41,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529357474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:41,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482491271] [2022-01-10 23:59:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:41,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:41,841 INFO L87 Difference]: Start difference. First operand 368 states and 624 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 23:59:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:41,951 INFO L93 Difference]: Finished difference Result 1038 states and 1772 transitions. [2022-01-10 23:59:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:41,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 23:59:41,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:41,954 INFO L225 Difference]: With dead ends: 1038 [2022-01-10 23:59:41,954 INFO L226 Difference]: Without dead ends: 704 [2022-01-10 23:59:41,955 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 23:59:41,956 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 2836 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1280 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 23:59:41,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 1280 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-01-10 23:59:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 368. [2022-01-10 23:59:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.6948228882833787) internal successors, (622), 367 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 23:59:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 622 transitions. [2022-01-10 23:59:41,978 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 622 transitions. Word has length 86 [2022-01-10 23:59:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,980 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 622 transitions. [2022-01-10 23:59:41,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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 23:59:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 622 transitions. [2022-01-10 23:59:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:59:41,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:41,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:59:41,983 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:41,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 138050595, now seen corresponding path program 1 times [2022-01-10 23:59:41,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002883053] [2022-01-10 23:59:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:42,128 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 23:59:42,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:42,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002883053] [2022-01-10 23:59:42,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002883053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:42,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:42,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:42,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473426505] [2022-01-10 23:59:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:42,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:42,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:42,130 INFO L87 Difference]: Start difference. First operand 368 states and 622 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:59:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:42,447 INFO L93 Difference]: Finished difference Result 1085 states and 1793 transitions. [2022-01-10 23:59:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:59:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 23:59:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:42,451 INFO L225 Difference]: With dead ends: 1085 [2022-01-10 23:59:42,451 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 23:59:42,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:59:42,452 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 2574 mSDsluCounter, 4963 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:42,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2574 Valid, 5722 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 23:59:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 670. [2022-01-10 23:59:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.7130044843049328) internal successors, (1146), 669 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 23:59:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1146 transitions. [2022-01-10 23:59:42,495 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1146 transitions. Word has length 88 [2022-01-10 23:59:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:42,495 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1146 transitions. [2022-01-10 23:59:42,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:59:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1146 transitions. [2022-01-10 23:59:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:59:42,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:42,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:42,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:59:42,497 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1963624012, now seen corresponding path program 1 times [2022-01-10 23:59:42,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:42,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43323112] [2022-01-10 23:59:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:42,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:42,559 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 23:59:42,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43323112] [2022-01-10 23:59:42,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43323112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:42,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:42,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:42,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890592388] [2022-01-10 23:59:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:42,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:59:42,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:59:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:59:42,560 INFO L87 Difference]: Start difference. First operand 670 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 23:59:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:42,621 INFO L93 Difference]: Finished difference Result 778 states and 1317 transitions. [2022-01-10 23:59:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 23:59:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:42,624 INFO L225 Difference]: With dead ends: 778 [2022-01-10 23:59:42,624 INFO L226 Difference]: Without dead ends: 670 [2022-01-10 23:59:42,624 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 23:59:42,625 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 351 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:42,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1503 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-01-10 23:59:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-01-10 23:59:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 1.711509715994021) internal successors, (1145), 669 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 23:59:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1145 transitions. [2022-01-10 23:59:42,661 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1145 transitions. Word has length 89 [2022-01-10 23:59:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:42,661 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1145 transitions. [2022-01-10 23:59:42,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 23:59:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1145 transitions. [2022-01-10 23:59:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:59:42,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:42,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:42,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:59:42,663 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1562173269, now seen corresponding path program 1 times [2022-01-10 23:59:42,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:42,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059800356] [2022-01-10 23:59:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:42,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:42,758 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 23:59:42,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:42,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059800356] [2022-01-10 23:59:42,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059800356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:42,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:42,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:42,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082016222] [2022-01-10 23:59:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:42,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:42,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:42,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:42,759 INFO L87 Difference]: Start difference. First operand 670 states and 1145 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 23:59:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:42,919 INFO L93 Difference]: Finished difference Result 1385 states and 2215 transitions. [2022-01-10 23:59:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 23:59:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:42,922 INFO L225 Difference]: With dead ends: 1385 [2022-01-10 23:59:42,922 INFO L226 Difference]: Without dead ends: 995 [2022-01-10 23:59:42,923 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 23:59:42,924 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1821 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:42,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1821 Valid, 1725 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-01-10 23:59:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 700. [2022-01-10 23:59:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.698140200286123) internal successors, (1187), 699 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 23:59:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1187 transitions. [2022-01-10 23:59:42,985 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1187 transitions. Word has length 89 [2022-01-10 23:59:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:42,985 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1187 transitions. [2022-01-10 23:59:42,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 23:59:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1187 transitions. [2022-01-10 23:59:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 23:59:42,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:42,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:42,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:59:42,987 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1818368304, now seen corresponding path program 1 times [2022-01-10 23:59:42,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:42,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935755099] [2022-01-10 23:59:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:42,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:43,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:43,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935755099] [2022-01-10 23:59:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935755099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:43,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:43,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:43,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685662759] [2022-01-10 23:59:43,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:43,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:43,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:43,087 INFO L87 Difference]: Start difference. First operand 700 states and 1187 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:43,234 INFO L93 Difference]: Finished difference Result 902 states and 1487 transitions. [2022-01-10 23:59:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:59:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 23:59:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:43,237 INFO L225 Difference]: With dead ends: 902 [2022-01-10 23:59:43,237 INFO L226 Difference]: Without dead ends: 757 [2022-01-10 23:59:43,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:59:43,238 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1130 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:43,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 3588 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-01-10 23:59:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 666. [2022-01-10 23:59:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.700751879699248) internal successors, (1131), 665 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states 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 23:59:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1131 transitions. [2022-01-10 23:59:43,275 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1131 transitions. Word has length 90 [2022-01-10 23:59:43,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:43,275 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1131 transitions. [2022-01-10 23:59:43,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1131 transitions. [2022-01-10 23:59:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 23:59:43,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:43,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:43,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:59:43,277 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1490970636, now seen corresponding path program 1 times [2022-01-10 23:59:43,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:43,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13909821] [2022-01-10 23:59:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:43,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:43,360 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 23:59:43,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:43,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13909821] [2022-01-10 23:59:43,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13909821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:43,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:43,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:43,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39878539] [2022-01-10 23:59:43,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:43,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:43,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:43,361 INFO L87 Difference]: Start difference. First operand 666 states and 1131 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:43,521 INFO L93 Difference]: Finished difference Result 1516 states and 2534 transitions. [2022-01-10 23:59:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:43,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 23:59:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:43,526 INFO L225 Difference]: With dead ends: 1516 [2022-01-10 23:59:43,526 INFO L226 Difference]: Without dead ends: 1359 [2022-01-10 23:59:43,526 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 23:59:43,527 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 677 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:43,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 2547 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2022-01-10 23:59:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1261. [2022-01-10 23:59:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 1.6992063492063492) internal successors, (2141), 1260 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states 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 23:59:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 2141 transitions. [2022-01-10 23:59:43,597 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 2141 transitions. Word has length 93 [2022-01-10 23:59:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:43,597 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 2141 transitions. [2022-01-10 23:59:43,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 2141 transitions. [2022-01-10 23:59:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:59:43,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:43,599 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, 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 23:59:43,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:59:43,599 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1353464251, now seen corresponding path program 1 times [2022-01-10 23:59:43,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128977924] [2022-01-10 23:59:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:43,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:43,713 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 23:59:43,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:43,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128977924] [2022-01-10 23:59:43,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128977924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:43,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:43,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:43,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032467986] [2022-01-10 23:59:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:43,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:43,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:43,714 INFO L87 Difference]: Start difference. First operand 1261 states and 2141 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:44,164 INFO L93 Difference]: Finished difference Result 3562 states and 5800 transitions. [2022-01-10 23:59:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:59:44,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 23:59:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:44,174 INFO L225 Difference]: With dead ends: 3562 [2022-01-10 23:59:44,175 INFO L226 Difference]: Without dead ends: 3280 [2022-01-10 23:59:44,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:59:44,177 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 3761 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3761 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:44,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3761 Valid, 4066 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2022-01-10 23:59:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2456. [2022-01-10 23:59:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2455 states have (on average 1.7042769857433808) internal successors, (4184), 2455 states have internal predecessors, (4184), 0 states have call successors, (0), 0 states 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 23:59:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4184 transitions. [2022-01-10 23:59:44,335 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4184 transitions. Word has length 94 [2022-01-10 23:59:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4184 transitions. [2022-01-10 23:59:44,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4184 transitions. [2022-01-10 23:59:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:59:44,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:44,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:44,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:59:44,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2124888162, now seen corresponding path program 1 times [2022-01-10 23:59:44,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:44,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438792341] [2022-01-10 23:59:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:44,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:44,421 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 23:59:44,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:44,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438792341] [2022-01-10 23:59:44,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438792341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:44,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:44,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:44,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609686458] [2022-01-10 23:59:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:44,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:44,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:44,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:44,422 INFO L87 Difference]: Start difference. First operand 2456 states and 4184 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:44,626 INFO L93 Difference]: Finished difference Result 2998 states and 4975 transitions. [2022-01-10 23:59:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 23:59:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:44,634 INFO L225 Difference]: With dead ends: 2998 [2022-01-10 23:59:44,634 INFO L226 Difference]: Without dead ends: 2427 [2022-01-10 23:59:44,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:59:44,635 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 995 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:44,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2035 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-01-10 23:59:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2402. [2022-01-10 23:59:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2401 states have (on average 1.7047063723448563) internal successors, (4093), 2401 states have internal predecessors, (4093), 0 states have call successors, (0), 0 states 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 23:59:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4093 transitions. [2022-01-10 23:59:44,811 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4093 transitions. Word has length 94 [2022-01-10 23:59:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:44,811 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 4093 transitions. [2022-01-10 23:59:44,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4093 transitions. [2022-01-10 23:59:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:59:44,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:44,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:44,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:59:44,815 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1623561569, now seen corresponding path program 1 times [2022-01-10 23:59:44,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:44,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441138353] [2022-01-10 23:59:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:44,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:44,906 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 23:59:44,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:44,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441138353] [2022-01-10 23:59:44,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441138353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:44,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:44,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:44,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635464045] [2022-01-10 23:59:44,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:44,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:44,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:44,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:44,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:44,908 INFO L87 Difference]: Start difference. First operand 2402 states and 4093 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:45,309 INFO L93 Difference]: Finished difference Result 3256 states and 5335 transitions. [2022-01-10 23:59:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 23:59:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:45,319 INFO L225 Difference]: With dead ends: 3256 [2022-01-10 23:59:45,319 INFO L226 Difference]: Without dead ends: 3095 [2022-01-10 23:59:45,320 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 23:59:45,320 INFO L933 BasicCegarLoop]: 1066 mSDtfsCounter, 958 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:45,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 3614 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-10 23:59:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2545. [2022-01-10 23:59:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.6878930817610063) internal successors, (4294), 2544 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states 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 23:59:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4294 transitions. [2022-01-10 23:59:45,516 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4294 transitions. Word has length 94 [2022-01-10 23:59:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:45,516 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 4294 transitions. [2022-01-10 23:59:45,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4294 transitions. [2022-01-10 23:59:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:59:45,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:45,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:45,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:59:45,521 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 535950066, now seen corresponding path program 1 times [2022-01-10 23:59:45,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247096069] [2022-01-10 23:59:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:45,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:45,584 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 23:59:45,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:45,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247096069] [2022-01-10 23:59:45,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247096069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:45,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:45,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:45,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716869611] [2022-01-10 23:59:45,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:45,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:45,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:45,585 INFO L87 Difference]: Start difference. First operand 2545 states and 4294 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:46,090 INFO L93 Difference]: Finished difference Result 4531 states and 7097 transitions. [2022-01-10 23:59:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 23:59:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:46,101 INFO L225 Difference]: With dead ends: 4531 [2022-01-10 23:59:46,101 INFO L226 Difference]: Without dead ends: 3932 [2022-01-10 23:59:46,103 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 23:59:46,103 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 442 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:46,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2673 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-01-10 23:59:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 2631. [2022-01-10 23:59:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2630 states have (on average 1.6718631178707224) internal successors, (4397), 2630 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states 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 23:59:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4397 transitions. [2022-01-10 23:59:46,308 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4397 transitions. Word has length 95 [2022-01-10 23:59:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:46,309 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 4397 transitions. [2022-01-10 23:59:46,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4397 transitions. [2022-01-10 23:59:46,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:59:46,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:46,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:59:46,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:59:46,313 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1229342771, now seen corresponding path program 1 times [2022-01-10 23:59:46,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586116162] [2022-01-10 23:59:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:46,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:46,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586116162] [2022-01-10 23:59:46,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586116162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:46,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:46,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:46,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877435831] [2022-01-10 23:59:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:46,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:46,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:46,406 INFO L87 Difference]: Start difference. First operand 2631 states and 4397 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:46,759 INFO L93 Difference]: Finished difference Result 3318 states and 5387 transitions. [2022-01-10 23:59:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:59:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 23:59:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:46,780 INFO L225 Difference]: With dead ends: 3318 [2022-01-10 23:59:46,781 INFO L226 Difference]: Without dead ends: 2974 [2022-01-10 23:59:46,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:46,783 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 708 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:46,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2382 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-01-10 23:59:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2627. [2022-01-10 23:59:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2626 states have (on average 1.6713632901751714) internal successors, (4389), 2626 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states 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 23:59:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4389 transitions. [2022-01-10 23:59:47,053 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4389 transitions. Word has length 95 [2022-01-10 23:59:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:47,054 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 4389 transitions. [2022-01-10 23:59:47,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:59:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4389 transitions. [2022-01-10 23:59:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 23:59:47,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:47,058 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:47,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:59:47,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 819209533, now seen corresponding path program 1 times [2022-01-10 23:59:47,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619529294] [2022-01-10 23:59:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:47,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:47,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:47,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619529294] [2022-01-10 23:59:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619529294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:47,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:47,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:47,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729671239] [2022-01-10 23:59:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:47,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:47,119 INFO L87 Difference]: Start difference. First operand 2627 states and 4389 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:59:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:47,470 INFO L93 Difference]: Finished difference Result 7391 states and 12301 transitions. [2022-01-10 23:59:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:47,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 23:59:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:47,480 INFO L225 Difference]: With dead ends: 7391 [2022-01-10 23:59:47,480 INFO L226 Difference]: Without dead ends: 4801 [2022-01-10 23:59:47,483 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 23:59:47,484 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 546 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:47,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 1100 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2022-01-10 23:59:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 3947. [2022-01-10 23:59:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3946 states have (on average 1.7095793208312215) internal successors, (6746), 3946 states have internal predecessors, (6746), 0 states have call successors, (0), 0 states 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 23:59:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 6746 transitions. [2022-01-10 23:59:47,708 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 6746 transitions. Word has length 111 [2022-01-10 23:59:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:47,708 INFO L470 AbstractCegarLoop]: Abstraction has 3947 states and 6746 transitions. [2022-01-10 23:59:47,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:59:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 6746 transitions. [2022-01-10 23:59:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 23:59:47,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:47,715 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:47,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:59:47,716 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash 912013626, now seen corresponding path program 1 times [2022-01-10 23:59:47,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:47,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843705190] [2022-01-10 23:59:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:47,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:47,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:47,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843705190] [2022-01-10 23:59:47,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843705190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:47,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:47,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:47,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053765664] [2022-01-10 23:59:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:47,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:47,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:47,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:47,774 INFO L87 Difference]: Start difference. First operand 3947 states and 6746 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 23:59:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:48,200 INFO L93 Difference]: Finished difference Result 11751 states and 20108 transitions. [2022-01-10 23:59:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-01-10 23:59:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:48,216 INFO L225 Difference]: With dead ends: 11751 [2022-01-10 23:59:48,216 INFO L226 Difference]: Without dead ends: 7841 [2022-01-10 23:59:48,223 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 23:59:48,223 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 544 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:48,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1194 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2022-01-10 23:59:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 6987. [2022-01-10 23:59:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 1.7446321213856284) internal successors, (12188), 6986 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states 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 23:59:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 12188 transitions. [2022-01-10 23:59:48,602 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 12188 transitions. Word has length 112 [2022-01-10 23:59:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:48,602 INFO L470 AbstractCegarLoop]: Abstraction has 6987 states and 12188 transitions. [2022-01-10 23:59:48,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 23:59:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 12188 transitions. [2022-01-10 23:59:48,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 23:59:48,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:48,614 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:48,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:59:48,615 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash -901205354, now seen corresponding path program 1 times [2022-01-10 23:59:48,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:48,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223352432] [2022-01-10 23:59:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:48,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:59:48,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:48,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223352432] [2022-01-10 23:59:48,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223352432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:48,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:48,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:48,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723136323] [2022-01-10 23:59:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:48,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:48,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:48,680 INFO L87 Difference]: Start difference. First operand 6987 states and 12188 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 23:59:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:49,430 INFO L93 Difference]: Finished difference Result 20695 states and 36146 transitions. [2022-01-10 23:59:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:49,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 23:59:49,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:49,460 INFO L225 Difference]: With dead ends: 20695 [2022-01-10 23:59:49,461 INFO L226 Difference]: Without dead ends: 13745 [2022-01-10 23:59:49,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:49,475 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 542 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:49,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1186 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13745 states. [2022-01-10 23:59:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13745 to 12891. [2022-01-10 23:59:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12891 states, 12890 states have (on average 1.7663304887509697) internal successors, (22768), 12890 states have internal predecessors, (22768), 0 states have call successors, (0), 0 states 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 23:59:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12891 states to 12891 states and 22768 transitions. [2022-01-10 23:59:50,073 INFO L78 Accepts]: Start accepts. Automaton has 12891 states and 22768 transitions. Word has length 113 [2022-01-10 23:59:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:50,074 INFO L470 AbstractCegarLoop]: Abstraction has 12891 states and 22768 transitions. [2022-01-10 23:59:50,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 23:59:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 12891 states and 22768 transitions. [2022-01-10 23:59:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 23:59:50,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:50,102 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:50,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:59:50,102 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1617117367, now seen corresponding path program 1 times [2022-01-10 23:59:50,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:50,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893378578] [2022-01-10 23:59:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:50,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:59:50,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893378578] [2022-01-10 23:59:50,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893378578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:50,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:50,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:50,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941959883] [2022-01-10 23:59:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:50,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:50,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:50,260 INFO L87 Difference]: Start difference. First operand 12891 states and 22768 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 23:59:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:52,519 INFO L93 Difference]: Finished difference Result 50627 states and 89576 transitions. [2022-01-10 23:59:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:52,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 114 [2022-01-10 23:59:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:52,633 INFO L225 Difference]: With dead ends: 50627 [2022-01-10 23:59:52,633 INFO L226 Difference]: Without dead ends: 50418 [2022-01-10 23:59:52,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:59:52,653 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2607 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:52,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 3544 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50418 states. [2022-01-10 23:59:54,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50418 to 25369. [2022-01-10 23:59:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25369 states, 25368 states have (on average 1.7703405865657522) internal successors, (44910), 25368 states have internal predecessors, (44910), 0 states have call successors, (0), 0 states 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 23:59:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25369 states to 25369 states and 44910 transitions. [2022-01-10 23:59:54,111 INFO L78 Accepts]: Start accepts. Automaton has 25369 states and 44910 transitions. Word has length 114 [2022-01-10 23:59:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:54,111 INFO L470 AbstractCegarLoop]: Abstraction has 25369 states and 44910 transitions. [2022-01-10 23:59:54,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 23:59:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25369 states and 44910 transitions. [2022-01-10 23:59:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 23:59:54,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:54,161 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:59:54,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:59:54,162 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1162775823, now seen corresponding path program 1 times [2022-01-10 23:59:54,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:54,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197301409] [2022-01-10 23:59:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:54,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:59:54,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:54,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197301409] [2022-01-10 23:59:54,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197301409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:54,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:54,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:54,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942809393] [2022-01-10 23:59:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:54,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:54,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:54,270 INFO L87 Difference]: Start difference. First operand 25369 states and 44910 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 23:59:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:58,977 INFO L93 Difference]: Finished difference Result 98617 states and 175242 transitions. [2022-01-10 23:59:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:59:58,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 115 [2022-01-10 23:59:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:59,264 INFO L225 Difference]: With dead ends: 98617 [2022-01-10 23:59:59,264 INFO L226 Difference]: Without dead ends: 98408 [2022-01-10 23:59:59,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:59:59,289 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 2478 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:59,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2478 Valid, 3095 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98408 states. [2022-01-11 00:00:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98408 to 50275. [2022-01-11 00:00:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50275 states, 50274 states have (on average 1.7732028483908182) internal successors, (89146), 50274 states have internal predecessors, (89146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50275 states to 50275 states and 89146 transitions. [2022-01-11 00:00:02,537 INFO L78 Accepts]: Start accepts. Automaton has 50275 states and 89146 transitions. Word has length 115 [2022-01-11 00:00:02,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:02,538 INFO L470 AbstractCegarLoop]: Abstraction has 50275 states and 89146 transitions. [2022-01-11 00:00:02,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 50275 states and 89146 transitions. [2022-01-11 00:00:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 00:00:02,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:02,631 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:02,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:00:02,631 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1988551043, now seen corresponding path program 1 times [2022-01-11 00:00:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990277895] [2022-01-11 00:00:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:02,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:00:02,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990277895] [2022-01-11 00:00:02,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990277895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:02,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:02,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:00:02,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827875059] [2022-01-11 00:00:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:02,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:02,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:02,717 INFO L87 Difference]: Start difference. First operand 50275 states and 89146 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:08,173 INFO L93 Difference]: Finished difference Result 147873 states and 262530 transitions. [2022-01-11 00:00:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:00:08,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 115 [2022-01-11 00:00:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:08,488 INFO L225 Difference]: With dead ends: 147873 [2022-01-11 00:00:08,488 INFO L226 Difference]: Without dead ends: 97648 [2022-01-11 00:00:08,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:00:08,567 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 1739 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1655 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 [2022-01-11 00:00:08,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 1655 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:00:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97648 states. [2022-01-11 00:00:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97648 to 50275. [2022-01-11 00:00:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50275 states, 50274 states have (on average 1.773163066396149) internal successors, (89144), 50274 states have internal predecessors, (89144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50275 states to 50275 states and 89144 transitions. [2022-01-11 00:00:12,232 INFO L78 Accepts]: Start accepts. Automaton has 50275 states and 89144 transitions. Word has length 115 [2022-01-11 00:00:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:12,232 INFO L470 AbstractCegarLoop]: Abstraction has 50275 states and 89144 transitions. [2022-01-11 00:00:12,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 50275 states and 89144 transitions. [2022-01-11 00:00:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:00:12,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:12,329 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:00:12,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:00:12,329 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1876277890, now seen corresponding path program 1 times [2022-01-11 00:00:12,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:12,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215373705] [2022-01-11 00:00:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:12,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:00:12,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215373705] [2022-01-11 00:00:12,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215373705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:12,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:12,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:00:12,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608475005] [2022-01-11 00:00:12,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:12,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:12,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:12,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:12,456 INFO L87 Difference]: Start difference. First operand 50275 states and 89144 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:15,427 INFO L93 Difference]: Finished difference Result 50275 states and 89144 transitions. [2022-01-11 00:00:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:00:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 116 [2022-01-11 00:00:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:15,428 INFO L225 Difference]: With dead ends: 50275 [2022-01-11 00:00:15,428 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:00:15,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:00:15,456 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 445 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:15,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1607 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:00:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:00:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:00:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:00:15,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-01-11 00:00:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:15,457 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:00:15,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:00:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:00:15,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:00:15,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 00:00:15,460 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 00:00:15,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:00:15,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.