/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:58:48,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:58:48,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:58:48,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:58:48,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:58:48,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:58:48,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:58:48,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:58:48,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:58:48,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:58:48,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:58:48,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:58:48,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:58:48,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:58:48,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:58:48,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:58:48,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:58:48,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:58:48,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:58:48,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:58:48,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:58:48,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:58:48,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:58:48,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:58:48,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:58:48,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:58:48,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:58:48,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:58:48,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:58:48,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:58:48,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:58:48,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:58:48,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:58:48,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:58:49,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:58:49,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:58:49,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:58:49,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:58:49,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:58:49,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:58:49,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:58:49,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:58:49,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:58:49,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:58:49,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:58:49,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:58:49,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:58:49,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:58:49,029 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:58:49,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:58:49,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:58:49,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:58:49,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:58:49,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:58:49,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:58:49,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:58:49,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:58:49,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:58:49,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:58:49,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:58:49,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:58:49,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:58:49,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:58:49,033 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:58:49,034 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:58:49,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:58:49,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:58:49,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:58:49,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:58:49,280 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:58:49,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-11 00:58:49,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182c347d7/942b3da848f74a60b062e4f8c1c98813/FLAG08b05c910 [2022-01-11 00:58:49,803 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:58:49,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-11 00:58:49,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182c347d7/942b3da848f74a60b062e4f8c1c98813/FLAG08b05c910 [2022-01-11 00:58:50,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182c347d7/942b3da848f74a60b062e4f8c1c98813 [2022-01-11 00:58:50,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:58:50,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:58:50,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:58:50,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:58:50,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:58:50,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:50,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51efab35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50, skipping insertion in model container [2022-01-11 00:58:50,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:50,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:58:50,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:58:50,552 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-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2022-01-11 00:58:50,581 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-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2022-01-11 00:58:50,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:58:50,677 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:58:50,784 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-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26539,26552] [2022-01-11 00:58:50,808 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-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30716,30729] [2022-01-11 00:58:50,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:58:50,912 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:58:50,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50 WrapperNode [2022-01-11 00:58:50,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:58:50,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:58:50,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:58:50,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:58:50,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:50,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,032 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2542 [2022-01-11 00:58:51,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:58:51,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:58:51,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:58:51,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:58:51,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:58:51,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:58:51,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:58:51,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:58:51,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (1/1) ... [2022-01-11 00:58:51,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:58:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:58:51,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:58:51,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:58:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:58:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:58:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:58:51,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:58:51,495 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:58:51,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:58:52,629 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:58:52,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:58:52,645 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:58:52,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:58:52 BoogieIcfgContainer [2022-01-11 00:58:52,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:58:52,648 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:58:52,648 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:58:52,649 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:58:52,651 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:58:52" (1/1) ... [2022-01-11 00:58:53,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:58:53 BasicIcfg [2022-01-11 00:58:53,430 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:58:53,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:58:53,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:58:53,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:58:53,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:58:50" (1/4) ... [2022-01-11 00:58:53,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5ebce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:58:53, skipping insertion in model container [2022-01-11 00:58:53,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:58:50" (2/4) ... [2022-01-11 00:58:53,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5ebce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:58:53, skipping insertion in model container [2022-01-11 00:58:53,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:58:52" (3/4) ... [2022-01-11 00:58:53,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5ebce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:58:53, skipping insertion in model container [2022-01-11 00:58:53,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:58:53" (4/4) ... [2022-01-11 00:58:53,436 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-11 00:58:53,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:58:53,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:58:53,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:58:53,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:58:53,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:58:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 671 states, 668 states have (on average 1.7949101796407185) internal successors, (1199), 670 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-01-11 00:58:53,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:53,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:53,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -340704674, now seen corresponding path program 1 times [2022-01-11 00:58:53,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450771692] [2022-01-11 00:58:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:53,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:54,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450771692] [2022-01-11 00:58:54,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450771692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:54,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:54,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:58:54,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960378486] [2022-01-11 00:58:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:54,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:58:54,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:58:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:58:54,245 INFO L87 Difference]: Start difference. First operand has 671 states, 668 states have (on average 1.7949101796407185) internal successors, (1199), 670 states have internal predecessors, (1199), 0 states have call successors, (0), 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 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:54,455 INFO L93 Difference]: Finished difference Result 1938 states and 3464 transitions. [2022-01-11 00:58:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:58:54,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2022-01-11 00:58:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:54,476 INFO L225 Difference]: With dead ends: 1938 [2022-01-11 00:58:54,476 INFO L226 Difference]: Without dead ends: 1308 [2022-01-11 00:58:54,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:58:54,487 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 2865 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:58:54,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2865 Valid, 2837 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:58:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-11 00:58:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2022-01-11 00:58:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1270 states have (on average 1.5692913385826772) internal successors, (1993), 1271 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1993 transitions. [2022-01-11 00:58:54,588 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1993 transitions. Word has length 243 [2022-01-11 00:58:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:54,589 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1993 transitions. [2022-01-11 00:58:54,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1993 transitions. [2022-01-11 00:58:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-11 00:58:54,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:54,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:54,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:58:54,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -581710205, now seen corresponding path program 1 times [2022-01-11 00:58:54,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:54,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801123603] [2022-01-11 00:58:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:54,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:54,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:54,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801123603] [2022-01-11 00:58:54,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801123603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:54,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:54,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:58:54,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516759420] [2022-01-11 00:58:54,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:54,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:58:54,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:54,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:58:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:58:54,902 INFO L87 Difference]: Start difference. First operand 1272 states and 1993 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:55,114 INFO L93 Difference]: Finished difference Result 4970 states and 7765 transitions. [2022-01-11 00:58:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:58:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2022-01-11 00:58:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:55,128 INFO L225 Difference]: With dead ends: 4970 [2022-01-11 00:58:55,128 INFO L226 Difference]: Without dead ends: 3710 [2022-01-11 00:58:55,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:58:55,132 INFO L933 BasicCegarLoop]: 1820 mSDtfsCounter, 4081 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:58:55,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4081 Valid, 3780 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:58:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2022-01-11 00:58:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 2464. [2022-01-11 00:58:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2462 states have (on average 1.5580828594638505) internal successors, (3836), 2463 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3836 transitions. [2022-01-11 00:58:55,253 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3836 transitions. Word has length 245 [2022-01-11 00:58:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:55,254 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3836 transitions. [2022-01-11 00:58:55,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3836 transitions. [2022-01-11 00:58:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-11 00:58:55,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:55,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:55,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:58:55,265 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1482406962, now seen corresponding path program 1 times [2022-01-11 00:58:55,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:55,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601644753] [2022-01-11 00:58:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:55,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:55,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:55,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601644753] [2022-01-11 00:58:55,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601644753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:55,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:55,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:58:55,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184341013] [2022-01-11 00:58:55,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:55,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:58:55,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:58:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:58:55,494 INFO L87 Difference]: Start difference. First operand 2464 states and 3836 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:55,660 INFO L93 Difference]: Finished difference Result 7335 states and 11410 transitions. [2022-01-11 00:58:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:58:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2022-01-11 00:58:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:55,675 INFO L225 Difference]: With dead ends: 7335 [2022-01-11 00:58:55,676 INFO L226 Difference]: Without dead ends: 4900 [2022-01-11 00:58:55,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:58:55,687 INFO L933 BasicCegarLoop]: 2076 mSDtfsCounter, 1029 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:58:55,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 3112 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:58:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2022-01-11 00:58:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 2478. [2022-01-11 00:58:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2476 states have (on average 1.5561389337641358) internal successors, (3853), 2477 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3853 transitions. [2022-01-11 00:58:55,846 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3853 transitions. Word has length 247 [2022-01-11 00:58:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:55,847 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 3853 transitions. [2022-01-11 00:58:55,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3853 transitions. [2022-01-11 00:58:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-11 00:58:55,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:55,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:55,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:58:55,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1668179869, now seen corresponding path program 1 times [2022-01-11 00:58:55,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:55,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812153134] [2022-01-11 00:58:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:55,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:56,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:56,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812153134] [2022-01-11 00:58:56,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812153134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:56,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:56,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:58:56,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638533266] [2022-01-11 00:58:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:56,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:58:56,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:58:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:58:56,021 INFO L87 Difference]: Start difference. First operand 2478 states and 3853 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:56,175 INFO L93 Difference]: Finished difference Result 5028 states and 7860 transitions. [2022-01-11 00:58:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:58:56,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-01-11 00:58:56,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:56,186 INFO L225 Difference]: With dead ends: 5028 [2022-01-11 00:58:56,186 INFO L226 Difference]: Without dead ends: 3341 [2022-01-11 00:58:56,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:58:56,192 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 536 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:58:56,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 2229 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:58:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2022-01-11 00:58:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 2971. [2022-01-11 00:58:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.5729201751431459) internal successors, (4670), 2970 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4670 transitions. [2022-01-11 00:58:56,420 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4670 transitions. Word has length 249 [2022-01-11 00:58:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:56,421 INFO L470 AbstractCegarLoop]: Abstraction has 2971 states and 4670 transitions. [2022-01-11 00:58:56,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4670 transitions. [2022-01-11 00:58:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-11 00:58:56,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:56,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:56,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:58:56,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash -570752031, now seen corresponding path program 1 times [2022-01-11 00:58:56,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:56,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577449800] [2022-01-11 00:58:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:56,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:56,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:56,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577449800] [2022-01-11 00:58:56,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577449800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:56,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:56,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:58:56,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483801281] [2022-01-11 00:58:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:56,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:58:56,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:58:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:58:56,669 INFO L87 Difference]: Start difference. First operand 2971 states and 4670 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:57,249 INFO L93 Difference]: Finished difference Result 11466 states and 17987 transitions. [2022-01-11 00:58:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:58:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-01-11 00:58:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:57,273 INFO L225 Difference]: With dead ends: 11466 [2022-01-11 00:58:57,273 INFO L226 Difference]: Without dead ends: 8536 [2022-01-11 00:58:57,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:58:57,279 INFO L933 BasicCegarLoop]: 2231 mSDtfsCounter, 3235 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:58:57,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3235 Valid, 5158 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:58:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2022-01-11 00:58:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 5675. [2022-01-11 00:58:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 5673 states have (on average 1.5607262471355543) internal successors, (8854), 5674 states have internal predecessors, (8854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 8854 transitions. [2022-01-11 00:58:57,606 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 8854 transitions. Word has length 249 [2022-01-11 00:58:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:57,606 INFO L470 AbstractCegarLoop]: Abstraction has 5675 states and 8854 transitions. [2022-01-11 00:58:57,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 8854 transitions. [2022-01-11 00:58:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-11 00:58:57,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:57,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:57,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:58:57,614 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -758468329, now seen corresponding path program 1 times [2022-01-11 00:58:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:57,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154510034] [2022-01-11 00:58:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:57,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:57,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154510034] [2022-01-11 00:58:57,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154510034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:57,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:57,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:58:57,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166641358] [2022-01-11 00:58:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:57,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:58:57,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:58:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:58:57,730 INFO L87 Difference]: Start difference. First operand 5675 states and 8854 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:58,507 INFO L93 Difference]: Finished difference Result 20477 states and 31734 transitions. [2022-01-11 00:58:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:58:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-01-11 00:58:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:58,541 INFO L225 Difference]: With dead ends: 20477 [2022-01-11 00:58:58,541 INFO L226 Difference]: Without dead ends: 15346 [2022-01-11 00:58:58,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:58:58,551 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 2734 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 4643 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 [2022-01-11 00:58:58,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2734 Valid, 4643 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:58:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2022-01-11 00:58:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 6136. [2022-01-11 00:58:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6134 states have (on average 1.570264101728073) internal successors, (9632), 6135 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 9632 transitions. [2022-01-11 00:58:59,031 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 9632 transitions. Word has length 249 [2022-01-11 00:58:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:58:59,031 INFO L470 AbstractCegarLoop]: Abstraction has 6136 states and 9632 transitions. [2022-01-11 00:58:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 9632 transitions. [2022-01-11 00:58:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-01-11 00:58:59,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:58:59,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:58:59,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:58:59,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:58:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:58:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash 903341502, now seen corresponding path program 1 times [2022-01-11 00:58:59,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:58:59,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378846052] [2022-01-11 00:58:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:58:59,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:58:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:58:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:58:59,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:58:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378846052] [2022-01-11 00:58:59,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378846052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:58:59,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:58:59,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:58:59,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604823313] [2022-01-11 00:58:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:58:59,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:58:59,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:58:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:58:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:58:59,154 INFO L87 Difference]: Start difference. First operand 6136 states and 9632 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:58:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:58:59,920 INFO L93 Difference]: Finished difference Result 21322 states and 33143 transitions. [2022-01-11 00:58:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:58:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2022-01-11 00:58:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:58:59,983 INFO L225 Difference]: With dead ends: 21322 [2022-01-11 00:58:59,983 INFO L226 Difference]: Without dead ends: 16159 [2022-01-11 00:58:59,989 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 [2022-01-11 00:58:59,991 INFO L933 BasicCegarLoop]: 2030 mSDtfsCounter, 2582 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 4993 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 [2022-01-11 00:58:59,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2582 Valid, 4993 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16159 states. [2022-01-11 00:59:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16159 to 6936. [2022-01-11 00:59:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6934 states have (on average 1.584511104701471) internal successors, (10987), 6935 states have internal predecessors, (10987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 10987 transitions. [2022-01-11 00:59:00,430 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 10987 transitions. Word has length 251 [2022-01-11 00:59:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:00,431 INFO L470 AbstractCegarLoop]: Abstraction has 6936 states and 10987 transitions. [2022-01-11 00:59:00,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 10987 transitions. [2022-01-11 00:59:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-11 00:59:00,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:00,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:00,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:59:00,440 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1626901193, now seen corresponding path program 1 times [2022-01-11 00:59:00,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288091075] [2022-01-11 00:59:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:00,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:00,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288091075] [2022-01-11 00:59:00,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288091075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:00,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:00,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:00,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920399295] [2022-01-11 00:59:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:00,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:00,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:00,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:00,543 INFO L87 Difference]: Start difference. First operand 6936 states and 10987 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:01,147 INFO L93 Difference]: Finished difference Result 17136 states and 26622 transitions. [2022-01-11 00:59:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:01,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 253 [2022-01-11 00:59:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:01,167 INFO L225 Difference]: With dead ends: 17136 [2022-01-11 00:59:01,167 INFO L226 Difference]: Without dead ends: 12061 [2022-01-11 00:59:01,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:01,175 INFO L933 BasicCegarLoop]: 1935 mSDtfsCounter, 891 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:01,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 2967 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12061 states. [2022-01-11 00:59:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12061 to 7026. [2022-01-11 00:59:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7024 states have (on average 1.578018223234624) internal successors, (11084), 7025 states have internal predecessors, (11084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 11084 transitions. [2022-01-11 00:59:01,742 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 11084 transitions. Word has length 253 [2022-01-11 00:59:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:01,742 INFO L470 AbstractCegarLoop]: Abstraction has 7026 states and 11084 transitions. [2022-01-11 00:59:01,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 11084 transitions. [2022-01-11 00:59:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-11 00:59:01,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:01,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:01,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:59:01,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -941600309, now seen corresponding path program 1 times [2022-01-11 00:59:01,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845935903] [2022-01-11 00:59:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:01,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:01,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:01,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845935903] [2022-01-11 00:59:01,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845935903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:01,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:01,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:01,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388614322] [2022-01-11 00:59:01,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:01,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:01,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:01,911 INFO L87 Difference]: Start difference. First operand 7026 states and 11084 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:02,607 INFO L93 Difference]: Finished difference Result 17771 states and 27550 transitions. [2022-01-11 00:59:02,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:02,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2022-01-11 00:59:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:02,626 INFO L225 Difference]: With dead ends: 17771 [2022-01-11 00:59:02,626 INFO L226 Difference]: Without dead ends: 12555 [2022-01-11 00:59:02,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:02,633 INFO L933 BasicCegarLoop]: 1879 mSDtfsCounter, 897 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:02,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 2871 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12555 states. [2022-01-11 00:59:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12555 to 12524. [2022-01-11 00:59:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12524 states, 12522 states have (on average 1.552707235265932) internal successors, (19443), 12523 states have internal predecessors, (19443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12524 states to 12524 states and 19443 transitions. [2022-01-11 00:59:03,399 INFO L78 Accepts]: Start accepts. Automaton has 12524 states and 19443 transitions. Word has length 254 [2022-01-11 00:59:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:03,400 INFO L470 AbstractCegarLoop]: Abstraction has 12524 states and 19443 transitions. [2022-01-11 00:59:03,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12524 states and 19443 transitions. [2022-01-11 00:59:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-11 00:59:03,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:03,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:03,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:59:03,413 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:03,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1342283455, now seen corresponding path program 1 times [2022-01-11 00:59:03,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344716934] [2022-01-11 00:59:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:03,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:03,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:03,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344716934] [2022-01-11 00:59:03,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344716934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:03,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:03,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:03,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461544627] [2022-01-11 00:59:03,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:03,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:03,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:03,598 INFO L87 Difference]: Start difference. First operand 12524 states and 19443 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:05,313 INFO L93 Difference]: Finished difference Result 35918 states and 55525 transitions. [2022-01-11 00:59:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:59:05,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2022-01-11 00:59:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:05,347 INFO L225 Difference]: With dead ends: 35918 [2022-01-11 00:59:05,347 INFO L226 Difference]: Without dead ends: 24174 [2022-01-11 00:59:05,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:05,363 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 2319 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:05,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 2567 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24174 states. [2022-01-11 00:59:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24174 to 24029. [2022-01-11 00:59:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24029 states, 24027 states have (on average 1.5401007200233072) internal successors, (37004), 24028 states have internal predecessors, (37004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24029 states to 24029 states and 37004 transitions. [2022-01-11 00:59:07,208 INFO L78 Accepts]: Start accepts. Automaton has 24029 states and 37004 transitions. Word has length 255 [2022-01-11 00:59:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:07,208 INFO L470 AbstractCegarLoop]: Abstraction has 24029 states and 37004 transitions. [2022-01-11 00:59:07,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 24029 states and 37004 transitions. [2022-01-11 00:59:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-11 00:59:07,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:07,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:59:07,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -372308840, now seen corresponding path program 1 times [2022-01-11 00:59:07,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:07,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464838365] [2022-01-11 00:59:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:07,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:07,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:07,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464838365] [2022-01-11 00:59:07,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464838365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:07,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:07,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:59:07,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964209387] [2022-01-11 00:59:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:07,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:59:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:59:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:07,453 INFO L87 Difference]: Start difference. First operand 24029 states and 37004 transitions. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:10,345 INFO L93 Difference]: Finished difference Result 63577 states and 97603 transitions. [2022-01-11 00:59:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2022-01-11 00:59:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:10,479 INFO L225 Difference]: With dead ends: 63577 [2022-01-11 00:59:10,479 INFO L226 Difference]: Without dead ends: 39985 [2022-01-11 00:59:10,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:59:10,506 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 4520 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4520 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:10,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4520 Valid, 3411 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39985 states. [2022-01-11 00:59:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39985 to 25689. [2022-01-11 00:59:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25689 states, 25687 states have (on average 1.5491493751703196) internal successors, (39793), 25688 states have internal predecessors, (39793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25689 states to 25689 states and 39793 transitions. [2022-01-11 00:59:12,661 INFO L78 Accepts]: Start accepts. Automaton has 25689 states and 39793 transitions. Word has length 257 [2022-01-11 00:59:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:12,661 INFO L470 AbstractCegarLoop]: Abstraction has 25689 states and 39793 transitions. [2022-01-11 00:59:12,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 25689 states and 39793 transitions. [2022-01-11 00:59:12,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-01-11 00:59:12,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:12,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:12,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:59:12,686 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1526057613, now seen corresponding path program 1 times [2022-01-11 00:59:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:12,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435881304] [2022-01-11 00:59:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:12,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:12,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435881304] [2022-01-11 00:59:12,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435881304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:12,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:12,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:12,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748637318] [2022-01-11 00:59:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:12,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:12,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:12,774 INFO L87 Difference]: Start difference. First operand 25689 states and 39793 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:16,527 INFO L93 Difference]: Finished difference Result 75136 states and 116115 transitions. [2022-01-11 00:59:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2022-01-11 00:59:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:16,608 INFO L225 Difference]: With dead ends: 75136 [2022-01-11 00:59:16,609 INFO L226 Difference]: Without dead ends: 50456 [2022-01-11 00:59:16,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:16,633 INFO L933 BasicCegarLoop]: 2037 mSDtfsCounter, 993 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:16,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 3070 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50456 states. [2022-01-11 00:59:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50456 to 26053. [2022-01-11 00:59:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26053 states, 26051 states have (on average 1.544124985605159) internal successors, (40226), 26052 states have internal predecessors, (40226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26053 states to 26053 states and 40226 transitions. [2022-01-11 00:59:19,110 INFO L78 Accepts]: Start accepts. Automaton has 26053 states and 40226 transitions. Word has length 259 [2022-01-11 00:59:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:19,111 INFO L470 AbstractCegarLoop]: Abstraction has 26053 states and 40226 transitions. [2022-01-11 00:59:19,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 26053 states and 40226 transitions. [2022-01-11 00:59:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-11 00:59:19,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:19,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:19,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:59:19,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1036586111, now seen corresponding path program 1 times [2022-01-11 00:59:19,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403547525] [2022-01-11 00:59:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:19,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:19,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:19,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403547525] [2022-01-11 00:59:19,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403547525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:19,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:19,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:59:19,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654718701] [2022-01-11 00:59:19,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:19,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:59:19,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:19,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:59:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:19,250 INFO L87 Difference]: Start difference. First operand 26053 states and 40226 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:22,482 INFO L93 Difference]: Finished difference Result 50452 states and 78728 transitions. [2022-01-11 00:59:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:59:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2022-01-11 00:59:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:22,527 INFO L225 Difference]: With dead ends: 50452 [2022-01-11 00:59:22,527 INFO L226 Difference]: Without dead ends: 35261 [2022-01-11 00:59:22,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:59:22,542 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 534 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 2209 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35261 states. [2022-01-11 00:59:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35261 to 32451. [2022-01-11 00:59:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32451 states, 32449 states have (on average 1.5625751178772844) internal successors, (50704), 32450 states have internal predecessors, (50704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32451 states to 32451 states and 50704 transitions. [2022-01-11 00:59:25,366 INFO L78 Accepts]: Start accepts. Automaton has 32451 states and 50704 transitions. Word has length 260 [2022-01-11 00:59:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:25,366 INFO L470 AbstractCegarLoop]: Abstraction has 32451 states and 50704 transitions. [2022-01-11 00:59:25,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 32451 states and 50704 transitions. [2022-01-11 00:59:25,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-11 00:59:25,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:25,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:25,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:59:25,404 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -972393218, now seen corresponding path program 1 times [2022-01-11 00:59:25,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:25,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187131718] [2022-01-11 00:59:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:25,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:25,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187131718] [2022-01-11 00:59:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187131718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:25,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:59:25,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739027648] [2022-01-11 00:59:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:59:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:59:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:25,659 INFO L87 Difference]: Start difference. First operand 32451 states and 50704 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:31,631 INFO L93 Difference]: Finished difference Result 92432 states and 144186 transitions. [2022-01-11 00:59:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:59:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2022-01-11 00:59:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:31,729 INFO L225 Difference]: With dead ends: 92432 [2022-01-11 00:59:31,729 INFO L226 Difference]: Without dead ends: 61096 [2022-01-11 00:59:31,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:31,760 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1965 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:59:31,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1965 Valid, 3628 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:59:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61096 states. [2022-01-11 00:59:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61096 to 61034. [2022-01-11 00:59:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61034 states, 61032 states have (on average 1.5476143662341066) internal successors, (94454), 61033 states have internal predecessors, (94454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61034 states to 61034 states and 94454 transitions. [2022-01-11 00:59:37,825 INFO L78 Accepts]: Start accepts. Automaton has 61034 states and 94454 transitions. Word has length 261 [2022-01-11 00:59:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:59:37,825 INFO L470 AbstractCegarLoop]: Abstraction has 61034 states and 94454 transitions. [2022-01-11 00:59:37,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 61034 states and 94454 transitions. [2022-01-11 00:59:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-11 00:59:37,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:59:37,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:59:37,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:59:37,866 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:59:37,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:59:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash -836198332, now seen corresponding path program 1 times [2022-01-11 00:59:37,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:59:37,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754222829] [2022-01-11 00:59:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:59:37,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:59:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:59:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:59:37,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:59:37,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754222829] [2022-01-11 00:59:37,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754222829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:59:37,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:59:37,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:59:37,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79497857] [2022-01-11 00:59:37,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:59:37,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:59:37,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:59:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:59:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:59:37,975 INFO L87 Difference]: Start difference. First operand 61034 states and 94454 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:59:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:59:53,830 INFO L93 Difference]: Finished difference Result 207299 states and 319263 transitions. [2022-01-11 00:59:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:59:53,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2022-01-11 00:59:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:59:54,211 INFO L225 Difference]: With dead ends: 207299 [2022-01-11 00:59:54,211 INFO L226 Difference]: Without dead ends: 158919 [2022-01-11 00:59:54,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:59:54,280 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 2629 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 4563 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 [2022-01-11 00:59:54,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2629 Valid, 4563 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:59:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158919 states.