/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:41:40,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:41:40,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:41:40,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:41:40,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:41:40,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:41:40,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:41:40,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:41:40,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:41:40,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:41:40,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:41:40,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:41:40,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:41:40,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:41:40,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:41:40,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:41:40,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:41:40,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:41:40,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:41:40,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:41:40,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:41:40,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:41:40,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:41:40,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:41:40,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:41:40,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:41:40,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:41:40,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:41:40,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:41:40,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:41:40,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:41:40,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:41:40,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:41:40,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:41:40,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:41:40,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:41:40,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:41:40,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:41:40,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:41:40,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:41:40,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:41:40,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:41:40,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:41:40,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:41:40,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:41:40,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:41:40,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:41:40,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:41:40,980 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:41:40,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:41:40,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:41:40,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:41:40,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:41:40,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:41:40,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:41:40,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:41:40,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:41:40,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:41:40,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:41:40,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:41:40,985 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:41:40,985 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:41:41,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:41:41,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:41:41,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:41:41,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:41:41,222 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:41:41,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2022-01-10 12:41:41,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93eff5ff/dff7bc83e3ec4c01a1dc5699dba16e28/FLAG8d88d835c [2022-01-10 12:41:41,722 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:41:41,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2022-01-10 12:41:41,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93eff5ff/dff7bc83e3ec4c01a1dc5699dba16e28/FLAG8d88d835c [2022-01-10 12:41:41,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93eff5ff/dff7bc83e3ec4c01a1dc5699dba16e28 [2022-01-10 12:41:41,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:41:41,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:41:41,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:41:41,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:41:41,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:41:41,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:41:41" (1/1) ... [2022-01-10 12:41:41,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1ac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:41, skipping insertion in model container [2022-01-10 12:41:41,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:41:41" (1/1) ... [2022-01-10 12:41:41,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:41:41,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:41:41,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2022-01-10 12:41:42,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:41:42,010 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:41:42,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2022-01-10 12:41:42,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:41:42,087 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:41:42,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42 WrapperNode [2022-01-10 12:41:42,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:41:42,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:41:42,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:41:42,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:41:42,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,140 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 421 [2022-01-10 12:41:42,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:41:42,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:41:42,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:41:42,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:41:42,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:41:42,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:41:42,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:41:42,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:41:42,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:42,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:41:42,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:41:42,201 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 12:41:42,203 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 12:41:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:41:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:41:42,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:41:42,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:41:42,311 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:41:42,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:41:42,793 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:41:42,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:41:42,800 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:41:42,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:41:42 BoogieIcfgContainer [2022-01-10 12:41:42,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:41:42,802 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:41:42,803 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:41:42,808 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:41:42,810 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:41:42" (1/1) ... [2022-01-10 12:41:43,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:41:43 BasicIcfg [2022-01-10 12:41:43,149 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:41:43,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:41:43,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:41:43,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:41:43,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:41:41" (1/4) ... [2022-01-10 12:41:43,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6ca404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:41:43, skipping insertion in model container [2022-01-10 12:41:43,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:41:42" (2/4) ... [2022-01-10 12:41:43,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6ca404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:41:43, skipping insertion in model container [2022-01-10 12:41:43,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:41:42" (3/4) ... [2022-01-10 12:41:43,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6ca404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:41:43, skipping insertion in model container [2022-01-10 12:41:43,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:41:43" (4/4) ... [2022-01-10 12:41:43,157 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.cTransformedIcfg [2022-01-10 12:41:43,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:41:43,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:41:43,215 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:41:43,222 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 12:41:43,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:41:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 12:41:43,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:43,244 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] [2022-01-10 12:41:43,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 512088396, now seen corresponding path program 1 times [2022-01-10 12:41:43,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:43,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619306292] [2022-01-10 12:41:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:43,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:43,683 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 12:41:43,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619306292] [2022-01-10 12:41:43,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619306292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:43,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:43,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:41:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575603250] [2022-01-10 12:41:43,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:43,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:41:43,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:41:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:41:43,724 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:43,890 INFO L93 Difference]: Finished difference Result 279 states and 477 transitions. [2022-01-10 12:41:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:41:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 12:41:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:43,901 INFO L225 Difference]: With dead ends: 279 [2022-01-10 12:41:43,901 INFO L226 Difference]: Without dead ends: 197 [2022-01-10 12:41:43,904 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 12:41:43,917 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 120 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:43,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 847 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:41:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-10 12:41:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2022-01-10 12:41:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 126 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2022-01-10 12:41:43,954 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2022-01-10 12:41:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:43,955 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2022-01-10 12:41:43,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2022-01-10 12:41:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:41:43,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:43,957 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] [2022-01-10 12:41:43,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:41:43,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1174880549, now seen corresponding path program 1 times [2022-01-10 12:41:43,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:43,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228524410] [2022-01-10 12:41:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:43,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:44,243 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 12:41:44,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:44,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228524410] [2022-01-10 12:41:44,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228524410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:44,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:44,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:44,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989098087] [2022-01-10 12:41:44,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:44,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:44,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:44,249 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:41:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:46,469 INFO L93 Difference]: Finished difference Result 258 states and 412 transitions. [2022-01-10 12:41:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:41:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:46,473 INFO L225 Difference]: With dead ends: 258 [2022-01-10 12:41:46,473 INFO L226 Difference]: Without dead ends: 188 [2022-01-10 12:41:46,473 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 12:41:46,474 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 93 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:46,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 421 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 12:41:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-10 12:41:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-01-10 12:41:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2022-01-10 12:41:46,494 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2022-01-10 12:41:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:46,495 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2022-01-10 12:41:46,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2022-01-10 12:41:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:41:46,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:46,497 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] [2022-01-10 12:41:46,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:41:46,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1456450131, now seen corresponding path program 1 times [2022-01-10 12:41:46,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:46,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052237549] [2022-01-10 12:41:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:46,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:46,630 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 12:41:46,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:46,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052237549] [2022-01-10 12:41:46,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052237549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:46,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:46,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:46,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517657582] [2022-01-10 12:41:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:46,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:46,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:46,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:46,638 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:46,674 INFO L93 Difference]: Finished difference Result 313 states and 501 transitions. [2022-01-10 12:41:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:41:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:46,678 INFO L225 Difference]: With dead ends: 313 [2022-01-10 12:41:46,678 INFO L226 Difference]: Without dead ends: 243 [2022-01-10 12:41:46,680 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 12:41:46,682 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:46,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-01-10 12:41:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-01-10 12:41:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5833333333333333) internal successors, (380), 240 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 380 transitions. [2022-01-10 12:41:46,714 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 380 transitions. Word has length 65 [2022-01-10 12:41:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:46,716 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 380 transitions. [2022-01-10 12:41:46,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 380 transitions. [2022-01-10 12:41:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:41:46,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:46,721 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] [2022-01-10 12:41:46,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:41:46,722 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -984536837, now seen corresponding path program 1 times [2022-01-10 12:41:46,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270624692] [2022-01-10 12:41:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:46,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:46,887 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 12:41:46,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:46,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270624692] [2022-01-10 12:41:46,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270624692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:46,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:46,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:46,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650266788] [2022-01-10 12:41:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:46,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:46,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:46,890 INFO L87 Difference]: Start difference. First operand 241 states and 380 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:46,967 INFO L93 Difference]: Finished difference Result 685 states and 1075 transitions. [2022-01-10 12:41:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:41:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:46,970 INFO L225 Difference]: With dead ends: 685 [2022-01-10 12:41:46,970 INFO L226 Difference]: Without dead ends: 469 [2022-01-10 12:41:46,974 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 12:41:46,982 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 395 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:46,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 463 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-01-10 12:41:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2022-01-10 12:41:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.5686695278969958) internal successors, (731), 466 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 731 transitions. [2022-01-10 12:41:47,019 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 731 transitions. Word has length 65 [2022-01-10 12:41:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:47,020 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 731 transitions. [2022-01-10 12:41:47,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 731 transitions. [2022-01-10 12:41:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:41:47,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:47,023 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] [2022-01-10 12:41:47,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:41:47,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1009893399, now seen corresponding path program 1 times [2022-01-10 12:41:47,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:47,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31414970] [2022-01-10 12:41:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:47,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:47,102 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 12:41:47,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31414970] [2022-01-10 12:41:47,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31414970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:47,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:47,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:47,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274061074] [2022-01-10 12:41:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:47,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:47,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:47,105 INFO L87 Difference]: Start difference. First operand 467 states and 731 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:47,161 INFO L93 Difference]: Finished difference Result 1363 states and 2129 transitions. [2022-01-10 12:41:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 12:41:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:47,166 INFO L225 Difference]: With dead ends: 1363 [2022-01-10 12:41:47,166 INFO L226 Difference]: Without dead ends: 924 [2022-01-10 12:41:47,167 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 12:41:47,167 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 182 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:47,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 556 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-01-10 12:41:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 469. [2022-01-10 12:41:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.5662393162393162) internal successors, (733), 468 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 733 transitions. [2022-01-10 12:41:47,198 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 733 transitions. Word has length 66 [2022-01-10 12:41:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:47,199 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 733 transitions. [2022-01-10 12:41:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 733 transitions. [2022-01-10 12:41:47,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:41:47,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:47,208 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] [2022-01-10 12:41:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:41:47,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash -287053468, now seen corresponding path program 1 times [2022-01-10 12:41:47,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:47,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429516648] [2022-01-10 12:41:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:47,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:47,368 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 12:41:47,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429516648] [2022-01-10 12:41:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429516648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:47,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:47,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:47,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711614867] [2022-01-10 12:41:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:47,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:47,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:47,370 INFO L87 Difference]: Start difference. First operand 469 states and 733 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:47,450 INFO L93 Difference]: Finished difference Result 1367 states and 2135 transitions. [2022-01-10 12:41:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:47,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 12:41:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:47,455 INFO L225 Difference]: With dead ends: 1367 [2022-01-10 12:41:47,456 INFO L226 Difference]: Without dead ends: 910 [2022-01-10 12:41:47,456 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 12:41:47,457 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 388 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:47,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 459 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2022-01-10 12:41:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2022-01-10 12:41:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.5501653803748623) internal successors, (1406), 907 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1406 transitions. [2022-01-10 12:41:47,506 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1406 transitions. Word has length 67 [2022-01-10 12:41:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:47,506 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1406 transitions. [2022-01-10 12:41:47,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1406 transitions. [2022-01-10 12:41:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:41:47,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:47,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:41:47,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash -341868132, now seen corresponding path program 1 times [2022-01-10 12:41:47,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:47,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492076245] [2022-01-10 12:41:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:47,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:47,592 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 12:41:47,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:47,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492076245] [2022-01-10 12:41:47,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492076245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:47,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:47,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:47,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593216768] [2022-01-10 12:41:47,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:47,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:47,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:47,596 INFO L87 Difference]: Start difference. First operand 908 states and 1406 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:47,646 INFO L93 Difference]: Finished difference Result 1581 states and 2442 transitions. [2022-01-10 12:41:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:47,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 12:41:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:47,649 INFO L225 Difference]: With dead ends: 1581 [2022-01-10 12:41:47,649 INFO L226 Difference]: Without dead ends: 689 [2022-01-10 12:41:47,650 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 12:41:47,651 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 69 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:47,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 614 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-01-10 12:41:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2022-01-10 12:41:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.5406976744186047) internal successors, (1060), 688 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1060 transitions. [2022-01-10 12:41:47,685 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1060 transitions. Word has length 67 [2022-01-10 12:41:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:47,685 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1060 transitions. [2022-01-10 12:41:47,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1060 transitions. [2022-01-10 12:41:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:41:47,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:47,686 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] [2022-01-10 12:41:47,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:41:47,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:47,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash -651306399, now seen corresponding path program 1 times [2022-01-10 12:41:47,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:47,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696000995] [2022-01-10 12:41:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:47,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:47,730 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 12:41:47,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:47,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696000995] [2022-01-10 12:41:47,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696000995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:47,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:47,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:47,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940195167] [2022-01-10 12:41:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:47,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:47,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:47,733 INFO L87 Difference]: Start difference. First operand 689 states and 1060 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:47,770 INFO L93 Difference]: Finished difference Result 1352 states and 2073 transitions. [2022-01-10 12:41:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 12:41:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:47,775 INFO L225 Difference]: With dead ends: 1352 [2022-01-10 12:41:47,775 INFO L226 Difference]: Without dead ends: 905 [2022-01-10 12:41:47,776 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 12:41:47,776 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 179 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 378 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 12:41:47,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 378 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:47,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-01-10 12:41:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 689. [2022-01-10 12:41:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.5392441860465116) internal successors, (1059), 688 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1059 transitions. [2022-01-10 12:41:47,814 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1059 transitions. Word has length 68 [2022-01-10 12:41:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:47,815 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1059 transitions. [2022-01-10 12:41:47,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1059 transitions. [2022-01-10 12:41:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:41:47,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:47,820 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] [2022-01-10 12:41:47,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:41:47,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -63284801, now seen corresponding path program 1 times [2022-01-10 12:41:47,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:47,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865451367] [2022-01-10 12:41:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:47,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:41:48,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:48,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865451367] [2022-01-10 12:41:48,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865451367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:48,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:48,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:48,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51934099] [2022-01-10 12:41:48,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:48,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:48,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:48,026 INFO L87 Difference]: Start difference. First operand 689 states and 1059 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:48,104 INFO L93 Difference]: Finished difference Result 1685 states and 2680 transitions. [2022-01-10 12:41:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:48,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:41:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:48,109 INFO L225 Difference]: With dead ends: 1685 [2022-01-10 12:41:48,109 INFO L226 Difference]: Without dead ends: 1157 [2022-01-10 12:41:48,110 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 12:41:48,112 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 91 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:48,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 356 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-10 12:41:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1155. [2022-01-10 12:41:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 1.5658578856152514) internal successors, (1807), 1154 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1807 transitions. [2022-01-10 12:41:48,183 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1807 transitions. Word has length 69 [2022-01-10 12:41:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:48,184 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1807 transitions. [2022-01-10 12:41:48,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1807 transitions. [2022-01-10 12:41:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:41:48,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:48,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:48,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:41:48,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:48,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1163453963, now seen corresponding path program 1 times [2022-01-10 12:41:48,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:48,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088900378] [2022-01-10 12:41:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:48,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:48,317 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 12:41:48,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:48,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088900378] [2022-01-10 12:41:48,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088900378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:48,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:48,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:48,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218917183] [2022-01-10 12:41:48,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:48,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:48,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:48,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:48,320 INFO L87 Difference]: Start difference. First operand 1155 states and 1807 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:48,514 INFO L93 Difference]: Finished difference Result 3350 states and 5241 transitions. [2022-01-10 12:41:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:48,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:41:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:48,523 INFO L225 Difference]: With dead ends: 3350 [2022-01-10 12:41:48,523 INFO L226 Difference]: Without dead ends: 2242 [2022-01-10 12:41:48,526 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 12:41:48,527 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 447 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:48,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 366 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-01-10 12:41:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2240. [2022-01-10 12:41:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2239 states have (on average 1.554711924966503) internal successors, (3481), 2239 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3481 transitions. [2022-01-10 12:41:48,707 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3481 transitions. Word has length 71 [2022-01-10 12:41:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:48,707 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 3481 transitions. [2022-01-10 12:41:48,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3481 transitions. [2022-01-10 12:41:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:41:48,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:48,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:48,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:41:48,710 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1932547645, now seen corresponding path program 1 times [2022-01-10 12:41:48,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178093541] [2022-01-10 12:41:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:48,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:48,801 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 12:41:48,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:48,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178093541] [2022-01-10 12:41:48,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178093541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:48,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:48,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:48,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539540279] [2022-01-10 12:41:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:48,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:48,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:48,803 INFO L87 Difference]: Start difference. First operand 2240 states and 3481 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:48,960 INFO L93 Difference]: Finished difference Result 4112 states and 6503 transitions. [2022-01-10 12:41:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:41:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:48,971 INFO L225 Difference]: With dead ends: 4112 [2022-01-10 12:41:48,971 INFO L226 Difference]: Without dead ends: 3079 [2022-01-10 12:41:48,973 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 12:41:48,974 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 94 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:48,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 430 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2022-01-10 12:41:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3077. [2022-01-10 12:41:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.5598179453836152) internal successors, (4798), 3076 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4798 transitions. [2022-01-10 12:41:49,183 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4798 transitions. Word has length 71 [2022-01-10 12:41:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:49,184 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 4798 transitions. [2022-01-10 12:41:49,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4798 transitions. [2022-01-10 12:41:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:41:49,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:49,186 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] [2022-01-10 12:41:49,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:41:49,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1011859181, now seen corresponding path program 1 times [2022-01-10 12:41:49,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:49,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207793232] [2022-01-10 12:41:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:49,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:49,229 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 12:41:49,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207793232] [2022-01-10 12:41:49,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207793232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:49,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:49,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:49,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53070148] [2022-01-10 12:41:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:49,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:49,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:49,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:49,231 INFO L87 Difference]: Start difference. First operand 3077 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:49,528 INFO L93 Difference]: Finished difference Result 9137 states and 14247 transitions. [2022-01-10 12:41:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:41:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:49,548 INFO L225 Difference]: With dead ends: 9137 [2022-01-10 12:41:49,548 INFO L226 Difference]: Without dead ends: 6116 [2022-01-10 12:41:49,552 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 12:41:49,553 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 168 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:49,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 536 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2022-01-10 12:41:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 3083. [2022-01-10 12:41:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3082 states have (on average 1.5587280986372485) internal successors, (4804), 3082 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4804 transitions. [2022-01-10 12:41:49,763 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4804 transitions. Word has length 72 [2022-01-10 12:41:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:49,763 INFO L470 AbstractCegarLoop]: Abstraction has 3083 states and 4804 transitions. [2022-01-10 12:41:49,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4804 transitions. [2022-01-10 12:41:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:41:49,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:49,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:49,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:41:49,765 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 948182078, now seen corresponding path program 1 times [2022-01-10 12:41:49,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:49,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719429908] [2022-01-10 12:41:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:49,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:41:49,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:49,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719429908] [2022-01-10 12:41:49,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719429908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:49,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:49,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:49,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39972143] [2022-01-10 12:41:49,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:49,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:49,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:49,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:49,862 INFO L87 Difference]: Start difference. First operand 3083 states and 4804 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:50,226 INFO L93 Difference]: Finished difference Result 8733 states and 13723 transitions. [2022-01-10 12:41:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:50,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:41:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:50,246 INFO L225 Difference]: With dead ends: 8733 [2022-01-10 12:41:50,246 INFO L226 Difference]: Without dead ends: 6004 [2022-01-10 12:41:50,250 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 12:41:50,251 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 373 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:50,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 445 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2022-01-10 12:41:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 6002. [2022-01-10 12:41:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6002 states, 6001 states have (on average 1.5410764872521245) internal successors, (9248), 6001 states have internal predecessors, (9248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6002 states to 6002 states and 9248 transitions. [2022-01-10 12:41:50,636 INFO L78 Accepts]: Start accepts. Automaton has 6002 states and 9248 transitions. Word has length 73 [2022-01-10 12:41:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:50,637 INFO L470 AbstractCegarLoop]: Abstraction has 6002 states and 9248 transitions. [2022-01-10 12:41:50,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6002 states and 9248 transitions. [2022-01-10 12:41:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:41:50,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:50,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:50,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:41:50,639 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2063683946, now seen corresponding path program 1 times [2022-01-10 12:41:50,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:50,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37800632] [2022-01-10 12:41:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:50,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:50,706 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 12:41:50,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:50,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37800632] [2022-01-10 12:41:50,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37800632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:50,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:50,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:50,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645680178] [2022-01-10 12:41:50,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:50,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:50,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:50,708 INFO L87 Difference]: Start difference. First operand 6002 states and 9248 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:50,966 INFO L93 Difference]: Finished difference Result 10525 states and 16187 transitions. [2022-01-10 12:41:50,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:50,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:41:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:50,980 INFO L225 Difference]: With dead ends: 10525 [2022-01-10 12:41:50,980 INFO L226 Difference]: Without dead ends: 4561 [2022-01-10 12:41:50,986 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 12:41:50,986 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 47 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:50,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 593 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2022-01-10 12:41:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4560. [2022-01-10 12:41:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.5334503180522043) internal successors, (6991), 4559 states have internal predecessors, (6991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6991 transitions. [2022-01-10 12:41:51,278 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6991 transitions. Word has length 73 [2022-01-10 12:41:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:51,278 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 6991 transitions. [2022-01-10 12:41:51,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6991 transitions. [2022-01-10 12:41:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:41:51,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:51,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:51,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:41:51,281 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:51,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:51,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1261039741, now seen corresponding path program 1 times [2022-01-10 12:41:51,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:51,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263320855] [2022-01-10 12:41:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:51,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:51,323 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 12:41:51,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263320855] [2022-01-10 12:41:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263320855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:51,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:51,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:51,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086852346] [2022-01-10 12:41:51,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:51,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:51,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:51,325 INFO L87 Difference]: Start difference. First operand 4560 states and 6991 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:51,610 INFO L93 Difference]: Finished difference Result 9006 states and 13823 transitions. [2022-01-10 12:41:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 12:41:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:51,620 INFO L225 Difference]: With dead ends: 9006 [2022-01-10 12:41:51,620 INFO L226 Difference]: Without dead ends: 6088 [2022-01-10 12:41:51,624 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 12:41:51,625 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 165 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:51,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 399 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2022-01-10 12:41:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 4560. [2022-01-10 12:41:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.5325729326606712) internal successors, (6987), 4559 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6987 transitions. [2022-01-10 12:41:51,865 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6987 transitions. Word has length 74 [2022-01-10 12:41:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:51,865 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 6987 transitions. [2022-01-10 12:41:51,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6987 transitions. [2022-01-10 12:41:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:41:51,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:51,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:51,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:41:51,868 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash 721076089, now seen corresponding path program 1 times [2022-01-10 12:41:51,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:51,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244447616] [2022-01-10 12:41:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:51,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:52,019 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 12:41:52,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244447616] [2022-01-10 12:41:52,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244447616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:52,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:52,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:52,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640591046] [2022-01-10 12:41:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:52,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:52,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:52,022 INFO L87 Difference]: Start difference. First operand 4560 states and 6987 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:54,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 12:41:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:54,592 INFO L93 Difference]: Finished difference Result 12151 states and 18950 transitions. [2022-01-10 12:41:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:54,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 12:41:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:54,606 INFO L225 Difference]: With dead ends: 12151 [2022-01-10 12:41:54,606 INFO L226 Difference]: Without dead ends: 8099 [2022-01-10 12:41:54,609 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 12:41:54,610 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:54,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 354 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 12:41:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2022-01-10 12:41:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 8097. [2022-01-10 12:41:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8097 states, 8096 states have (on average 1.5400197628458498) internal successors, (12468), 8096 states have internal predecessors, (12468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8097 states to 8097 states and 12468 transitions. [2022-01-10 12:41:55,121 INFO L78 Accepts]: Start accepts. Automaton has 8097 states and 12468 transitions. Word has length 75 [2022-01-10 12:41:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:55,122 INFO L470 AbstractCegarLoop]: Abstraction has 8097 states and 12468 transitions. [2022-01-10 12:41:55,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8097 states and 12468 transitions. [2022-01-10 12:41:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:41:55,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:55,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:55,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:41:55,125 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:55,125 INFO L85 PathProgramCache]: Analyzing trace with hash -200671217, now seen corresponding path program 1 times [2022-01-10 12:41:55,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:55,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426991213] [2022-01-10 12:41:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:55,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:55,238 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 12:41:55,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:55,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426991213] [2022-01-10 12:41:55,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426991213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:55,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:55,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:55,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419900085] [2022-01-10 12:41:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:55,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:55,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:55,240 INFO L87 Difference]: Start difference. First operand 8097 states and 12468 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:56,188 INFO L93 Difference]: Finished difference Result 20808 states and 32219 transitions. [2022-01-10 12:41:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:41:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:56,212 INFO L225 Difference]: With dead ends: 20808 [2022-01-10 12:41:56,213 INFO L226 Difference]: Without dead ends: 13219 [2022-01-10 12:41:56,221 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 12:41:56,221 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 410 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:56,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 380 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2022-01-10 12:41:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13217. [2022-01-10 12:41:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13217 states, 13216 states have (on average 1.522472760290557) internal successors, (20121), 13216 states have internal predecessors, (20121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13217 states to 13217 states and 20121 transitions. [2022-01-10 12:41:57,040 INFO L78 Accepts]: Start accepts. Automaton has 13217 states and 20121 transitions. Word has length 77 [2022-01-10 12:41:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:57,040 INFO L470 AbstractCegarLoop]: Abstraction has 13217 states and 20121 transitions. [2022-01-10 12:41:57,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 13217 states and 20121 transitions. [2022-01-10 12:41:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:41:57,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:57,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:57,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:41:57,043 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1680144567, now seen corresponding path program 1 times [2022-01-10 12:41:57,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:57,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900022093] [2022-01-10 12:41:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:57,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:57,101 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 12:41:57,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:57,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900022093] [2022-01-10 12:41:57,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900022093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:57,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:41:57,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283178784] [2022-01-10 12:41:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:57,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:41:57,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:41:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:41:57,103 INFO L87 Difference]: Start difference. First operand 13217 states and 20121 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:57,801 INFO L93 Difference]: Finished difference Result 20264 states and 30831 transitions. [2022-01-10 12:41:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:41:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:41:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:57,821 INFO L225 Difference]: With dead ends: 20264 [2022-01-10 12:41:57,821 INFO L226 Difference]: Without dead ends: 11520 [2022-01-10 12:41:57,832 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 12:41:57,832 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:57,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 591 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:41:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2022-01-10 12:41:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 11520. [2022-01-10 12:41:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11520 states, 11519 states have (on average 1.5195763521138987) internal successors, (17504), 11519 states have internal predecessors, (17504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11520 states to 11520 states and 17504 transitions. [2022-01-10 12:41:58,623 INFO L78 Accepts]: Start accepts. Automaton has 11520 states and 17504 transitions. Word has length 77 [2022-01-10 12:41:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:41:58,624 INFO L470 AbstractCegarLoop]: Abstraction has 11520 states and 17504 transitions. [2022-01-10 12:41:58,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11520 states and 17504 transitions. [2022-01-10 12:41:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:41:58,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:41:58,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:41:58,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:41:58,627 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:41:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:41:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1473967407, now seen corresponding path program 1 times [2022-01-10 12:41:58,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:41:58,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181072167] [2022-01-10 12:41:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:41:58,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:41:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:41:58,670 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 12:41:58,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:41:58,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181072167] [2022-01-10 12:41:58,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181072167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:41:58,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:41:58,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:41:58,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565058849] [2022-01-10 12:41:58,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:41:58,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:41:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:41:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:41:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:41:58,673 INFO L87 Difference]: Start difference. First operand 11520 states and 17504 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:41:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:41:59,798 INFO L93 Difference]: Finished difference Result 34220 states and 52039 transitions. [2022-01-10 12:41:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:41:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 12:41:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:41:59,832 INFO L225 Difference]: With dead ends: 34220 [2022-01-10 12:41:59,832 INFO L226 Difference]: Without dead ends: 22924 [2022-01-10 12:41:59,847 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 12:41:59,847 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 154 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:41:59,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 516 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:41:59,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22924 states. [2022-01-10 12:42:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22924 to 11542. [2022-01-10 12:42:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11542 states, 11541 states have (on average 1.518585911099558) internal successors, (17526), 11541 states have internal predecessors, (17526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11542 states to 11542 states and 17526 transitions. [2022-01-10 12:42:00,696 INFO L78 Accepts]: Start accepts. Automaton has 11542 states and 17526 transitions. Word has length 78 [2022-01-10 12:42:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:00,696 INFO L470 AbstractCegarLoop]: Abstraction has 11542 states and 17526 transitions. [2022-01-10 12:42:00,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11542 states and 17526 transitions. [2022-01-10 12:42:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:42:00,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:00,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:00,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:42:00,699 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1566282310, now seen corresponding path program 1 times [2022-01-10 12:42:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822855204] [2022-01-10 12:42:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:00,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:00,776 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 12:42:00,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822855204] [2022-01-10 12:42:00,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822855204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:00,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:42:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926059154] [2022-01-10 12:42:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:42:00,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:42:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:42:00,778 INFO L87 Difference]: Start difference. First operand 11542 states and 17526 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:01,734 INFO L93 Difference]: Finished difference Result 21640 states and 33199 transitions. [2022-01-10 12:42:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:42:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 12:42:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:01,758 INFO L225 Difference]: With dead ends: 21640 [2022-01-10 12:42:01,758 INFO L226 Difference]: Without dead ends: 15848 [2022-01-10 12:42:01,767 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 12:42:01,768 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:42:01,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:42:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15848 states. [2022-01-10 12:42:02,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15848 to 15846. [2022-01-10 12:42:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15846 states, 15845 states have (on average 1.5171978542126854) internal successors, (24040), 15845 states have internal predecessors, (24040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15846 states to 15846 states and 24040 transitions. [2022-01-10 12:42:02,879 INFO L78 Accepts]: Start accepts. Automaton has 15846 states and 24040 transitions. Word has length 78 [2022-01-10 12:42:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:02,879 INFO L470 AbstractCegarLoop]: Abstraction has 15846 states and 24040 transitions. [2022-01-10 12:42:02,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 15846 states and 24040 transitions. [2022-01-10 12:42:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:42:02,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:02,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:02,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:42:02,882 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1712513705, now seen corresponding path program 1 times [2022-01-10 12:42:02,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163277380] [2022-01-10 12:42:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:02,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:02,981 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 12:42:02,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163277380] [2022-01-10 12:42:02,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163277380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:02,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:02,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:42:02,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4779938] [2022-01-10 12:42:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:02,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:42:02,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:42:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:42:02,984 INFO L87 Difference]: Start difference. First operand 15846 states and 24040 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:04,287 INFO L93 Difference]: Finished difference Result 40954 states and 62066 transitions. [2022-01-10 12:42:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:42:04,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 12:42:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:04,316 INFO L225 Difference]: With dead ends: 40954 [2022-01-10 12:42:04,316 INFO L226 Difference]: Without dead ends: 25240 [2022-01-10 12:42:04,328 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 12:42:04,329 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 350 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:42:04,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:42:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25240 states. [2022-01-10 12:42:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25240 to 25238. [2022-01-10 12:42:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25238 states, 25237 states have (on average 1.4995839442088996) internal successors, (37845), 25237 states have internal predecessors, (37845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 37845 transitions. [2022-01-10 12:42:05,742 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 37845 transitions. Word has length 79 [2022-01-10 12:42:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:05,742 INFO L470 AbstractCegarLoop]: Abstraction has 25238 states and 37845 transitions. [2022-01-10 12:42:05,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 37845 transitions. [2022-01-10 12:42:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:42:05,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:05,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:05,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:42:05,748 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1787649872, now seen corresponding path program 1 times [2022-01-10 12:42:05,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:05,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464190945] [2022-01-10 12:42:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:05,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:05,810 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 12:42:05,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:05,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464190945] [2022-01-10 12:42:05,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464190945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:05,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:05,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:42:05,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649287486] [2022-01-10 12:42:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:05,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:42:05,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:42:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:42:05,812 INFO L87 Difference]: Start difference. First operand 25238 states and 37845 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:07,121 INFO L93 Difference]: Finished difference Result 43012 states and 64570 transitions. [2022-01-10 12:42:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:42:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 12:42:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:07,149 INFO L225 Difference]: With dead ends: 43012 [2022-01-10 12:42:07,149 INFO L226 Difference]: Without dead ends: 21747 [2022-01-10 12:42:07,163 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 12:42:07,164 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 23 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:42:07,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 568 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:42:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21747 states. [2022-01-10 12:42:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21747 to 21741. [2022-01-10 12:42:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21741 states, 21740 states have (on average 1.496826126954922) internal successors, (32541), 21740 states have internal predecessors, (32541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21741 states to 21741 states and 32541 transitions. [2022-01-10 12:42:08,397 INFO L78 Accepts]: Start accepts. Automaton has 21741 states and 32541 transitions. Word has length 79 [2022-01-10 12:42:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 21741 states and 32541 transitions. [2022-01-10 12:42:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21741 states and 32541 transitions. [2022-01-10 12:42:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:42:08,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:08,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:08,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:42:08,400 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -904748328, now seen corresponding path program 1 times [2022-01-10 12:42:08,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:08,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848435906] [2022-01-10 12:42:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:08,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:08,440 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 12:42:08,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848435906] [2022-01-10 12:42:08,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848435906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:08,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:08,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:42:08,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427230825] [2022-01-10 12:42:08,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:08,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:42:08,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:42:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:42:08,442 INFO L87 Difference]: Start difference. First operand 21741 states and 32541 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:09,892 INFO L93 Difference]: Finished difference Result 39625 states and 59365 transitions. [2022-01-10 12:42:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:42:09,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 12:42:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:09,925 INFO L225 Difference]: With dead ends: 39625 [2022-01-10 12:42:09,925 INFO L226 Difference]: Without dead ends: 27798 [2022-01-10 12:42:09,935 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 12:42:09,939 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 151 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 369 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 12:42:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 369 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:42:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27798 states. [2022-01-10 12:42:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27798 to 21741. [2022-01-10 12:42:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21741 states, 21740 states have (on average 1.496596136154554) internal successors, (32536), 21740 states have internal predecessors, (32536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21741 states to 21741 states and 32536 transitions. [2022-01-10 12:42:11,117 INFO L78 Accepts]: Start accepts. Automaton has 21741 states and 32536 transitions. Word has length 80 [2022-01-10 12:42:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:11,117 INFO L470 AbstractCegarLoop]: Abstraction has 21741 states and 32536 transitions. [2022-01-10 12:42:11,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:11,117 INFO L276 IsEmpty]: Start isEmpty. Operand 21741 states and 32536 transitions. [2022-01-10 12:42:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 12:42:11,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:11,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:42:11,120 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 524357554, now seen corresponding path program 1 times [2022-01-10 12:42:11,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:11,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243939083] [2022-01-10 12:42:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:11,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:11,348 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 12:42:11,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:11,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243939083] [2022-01-10 12:42:11,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243939083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:11,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:11,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:42:11,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545310898] [2022-01-10 12:42:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:11,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:42:11,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:42:11,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:42:11,350 INFO L87 Difference]: Start difference. First operand 21741 states and 32536 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:20,168 INFO L93 Difference]: Finished difference Result 110823 states and 169564 transitions. [2022-01-10 12:42:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:42:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 12:42:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:20,297 INFO L225 Difference]: With dead ends: 110823 [2022-01-10 12:42:20,297 INFO L226 Difference]: Without dead ends: 90139 [2022-01-10 12:42:20,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:42:20,334 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 668 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 12:42:20,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1226 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 12:42:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90139 states. [2022-01-10 12:42:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90139 to 41097. [2022-01-10 12:42:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41097 states, 41096 states have (on average 1.4926513529297256) internal successors, (61342), 41096 states have internal predecessors, (61342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41097 states to 41097 states and 61342 transitions. [2022-01-10 12:42:25,253 INFO L78 Accepts]: Start accepts. Automaton has 41097 states and 61342 transitions. Word has length 81 [2022-01-10 12:42:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:25,253 INFO L470 AbstractCegarLoop]: Abstraction has 41097 states and 61342 transitions. [2022-01-10 12:42:25,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41097 states and 61342 transitions. [2022-01-10 12:42:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:42:25,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:25,256 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 12:42:25,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:42:25,256 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:25,257 INFO L85 PathProgramCache]: Analyzing trace with hash -954490809, now seen corresponding path program 1 times [2022-01-10 12:42:25,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:25,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019390972] [2022-01-10 12:42:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:25,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:25,431 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 12:42:25,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:25,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019390972] [2022-01-10 12:42:25,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019390972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:25,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:25,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:42:25,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540638459] [2022-01-10 12:42:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:25,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:42:25,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:42:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:42:25,433 INFO L87 Difference]: Start difference. First operand 41097 states and 61342 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:42:37,015 INFO L93 Difference]: Finished difference Result 133933 states and 202901 transitions. [2022-01-10 12:42:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:42:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:42:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:42:37,164 INFO L225 Difference]: With dead ends: 133933 [2022-01-10 12:42:37,165 INFO L226 Difference]: Without dead ends: 93893 [2022-01-10 12:42:37,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 12:42:37,197 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 326 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:42:37,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 525 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:42:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93893 states. [2022-01-10 12:42:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93893 to 67187. [2022-01-10 12:42:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67187 states, 67186 states have (on average 1.4958473491501205) internal successors, (100500), 67186 states have internal predecessors, (100500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67187 states to 67187 states and 100500 transitions. [2022-01-10 12:42:46,441 INFO L78 Accepts]: Start accepts. Automaton has 67187 states and 100500 transitions. Word has length 82 [2022-01-10 12:42:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:42:46,441 INFO L470 AbstractCegarLoop]: Abstraction has 67187 states and 100500 transitions. [2022-01-10 12:42:46,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:42:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 67187 states and 100500 transitions. [2022-01-10 12:42:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:42:46,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:42:46,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:42:46,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 12:42:46,444 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:42:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:42:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 450467799, now seen corresponding path program 1 times [2022-01-10 12:42:46,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:42:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157123308] [2022-01-10 12:42:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:42:46,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:42:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:42:46,784 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 12:42:46,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:42:46,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157123308] [2022-01-10 12:42:46,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157123308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:42:46,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:42:46,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:42:46,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746851062] [2022-01-10 12:42:46,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:42:46,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:42:46,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:42:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:42:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:42:46,787 INFO L87 Difference]: Start difference. First operand 67187 states and 100500 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)