/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:50:45,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:50:45,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:50:45,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:50:45,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:50:45,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:50:45,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:50:45,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:50:45,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:50:45,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:50:45,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:50:45,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:50:45,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:50:45,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:50:45,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:50:45,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:50:45,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:50:45,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:50:45,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:50:45,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:50:45,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:50:45,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:50:45,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:50:45,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:50:45,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:50:45,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:50:45,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:50:45,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:50:45,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:50:45,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:50:45,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:50:45,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:50:45,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:50:45,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:50:45,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:50:45,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:50:45,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:50:45,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:50:45,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:50:45,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:50:45,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:50:45,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:50:45,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:50:45,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:50:45,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:50:45,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:50:45,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:50:45,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:50:45,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:50:45,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:50:45,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:45,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:50:45,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:50:45,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:50:45,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:50:45,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:50:45,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:50:45,194 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:50:45,194 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:50:45,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:50:45,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:50:45,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:50:45,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:50:45,468 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:50:45,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2022-01-10 23:50:45,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf06d73e/38a3c6ac678f43f1b1f81f0ff07a7f6c/FLAG4a2c6c2b4 [2022-01-10 23:50:46,052 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:50:46,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2022-01-10 23:50:46,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf06d73e/38a3c6ac678f43f1b1f81f0ff07a7f6c/FLAG4a2c6c2b4 [2022-01-10 23:50:46,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf06d73e/38a3c6ac678f43f1b1f81f0ff07a7f6c [2022-01-10 23:50:46,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:50:46,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:50:46,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:46,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:50:46,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:50:46,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:46" (1/1) ... [2022-01-10 23:50:46,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6386a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:46, skipping insertion in model container [2022-01-10 23:50:46,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:46" (1/1) ... [2022-01-10 23:50:46,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:50:46,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:46,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c[40875,40888] [2022-01-10 23:50:47,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:47,105 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:50:47,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:47,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c[40875,40888] [2022-01-10 23:50:47,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:47,227 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:50:47,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c[40875,40888] [2022-01-10 23:50:47,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:47,384 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:50:47,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47 WrapperNode [2022-01-10 23:50:47,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:47,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:47,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:50:47,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:50:47,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,528 INFO L137 Inliner]: procedures = 130, calls = 205, calls flagged for inlining = 117, calls inlined = 161, statements flattened = 2319 [2022-01-10 23:50:47,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:47,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:50:47,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:50:47,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:50:47,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:50:47,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:50:47,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:50:47,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:50:47,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (1/1) ... [2022-01-10 23:50:47,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:50:47,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:50:47,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:50:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:50:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:50:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:50:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:50:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:50:47,879 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:50:47,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:50:48,986 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:50:48,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:50:48,999 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:50:49,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:49 BoogieIcfgContainer [2022-01-10 23:50:49,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:50:49,002 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:50:49,002 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:50:49,004 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:50:49,006 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:49" (1/1) ... [2022-01-10 23:50:49,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:49 BasicIcfg [2022-01-10 23:50:49,410 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:50:49,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:50:49,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:50:49,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:50:49,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:50:46" (1/4) ... [2022-01-10 23:50:49,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f68f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:49, skipping insertion in model container [2022-01-10 23:50:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:47" (2/4) ... [2022-01-10 23:50:49,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f68f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:49, skipping insertion in model container [2022-01-10 23:50:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:49" (3/4) ... [2022-01-10 23:50:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f68f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:50:49, skipping insertion in model container [2022-01-10 23:50:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:49" (4/4) ... [2022-01-10 23:50:49,415 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.cTransformedIcfg [2022-01-10 23:50:49,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:50:49,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:50:49,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:50:49,473 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:50:49,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:50:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 521 states, 518 states have (on average 1.6737451737451738) internal successors, (867), 520 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:50:49,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:49,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:49,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 262044759, now seen corresponding path program 1 times [2022-01-10 23:50:49,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:49,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538149601] [2022-01-10 23:50:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:49,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:49,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:49,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538149601] [2022-01-10 23:50:49,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538149601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:49,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:49,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:50:49,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932420029] [2022-01-10 23:50:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:49,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:50:49,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:50:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:49,962 INFO L87 Difference]: Start difference. First operand has 521 states, 518 states have (on average 1.6737451737451738) internal successors, (867), 520 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:50,033 INFO L93 Difference]: Finished difference Result 776 states and 1266 transitions. [2022-01-10 23:50:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:50:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:50:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:50,056 INFO L225 Difference]: With dead ends: 776 [2022-01-10 23:50:50,057 INFO L226 Difference]: Without dead ends: 465 [2022-01-10 23:50:50,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:50,063 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:50,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-10 23:50:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-01-10 23:50:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.6868250539956804) internal successors, (781), 464 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 781 transitions. [2022-01-10 23:50:50,137 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 781 transitions. Word has length 60 [2022-01-10 23:50:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:50,137 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 781 transitions. [2022-01-10 23:50:50,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 781 transitions. [2022-01-10 23:50:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:50:50,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:50,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:50,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:50:50,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 73533249, now seen corresponding path program 1 times [2022-01-10 23:50:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455476952] [2022-01-10 23:50:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:50,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:50,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:50,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455476952] [2022-01-10 23:50:50,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455476952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:50,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:50,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:50,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139393249] [2022-01-10 23:50:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:50,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:50,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:50,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:50,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:50,379 INFO L87 Difference]: Start difference. First operand 465 states and 781 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:50,499 INFO L93 Difference]: Finished difference Result 911 states and 1534 transitions. [2022-01-10 23:50:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:50,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:50:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:50,502 INFO L225 Difference]: With dead ends: 911 [2022-01-10 23:50:50,503 INFO L226 Difference]: Without dead ends: 465 [2022-01-10 23:50:50,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:50,505 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 756 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:50,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 774 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-10 23:50:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-01-10 23:50:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.6825053995680346) internal successors, (779), 464 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 779 transitions. [2022-01-10 23:50:50,551 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 779 transitions. Word has length 61 [2022-01-10 23:50:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:50,553 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 779 transitions. [2022-01-10 23:50:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 779 transitions. [2022-01-10 23:50:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:50:50,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:50,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:50,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:50:50,560 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:50,561 INFO L85 PathProgramCache]: Analyzing trace with hash 253880129, now seen corresponding path program 1 times [2022-01-10 23:50:50,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:50,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666437969] [2022-01-10 23:50:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:50,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:50,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:50,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666437969] [2022-01-10 23:50:50,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666437969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:50,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:50,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:50,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70027933] [2022-01-10 23:50:50,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:50,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:50,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:50,728 INFO L87 Difference]: Start difference. First operand 465 states and 779 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:50,995 INFO L93 Difference]: Finished difference Result 2193 states and 3691 transitions. [2022-01-10 23:50:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:50:50,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:50:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:51,005 INFO L225 Difference]: With dead ends: 2193 [2022-01-10 23:50:51,006 INFO L226 Difference]: Without dead ends: 1752 [2022-01-10 23:50:51,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:50:51,015 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 3678 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3678 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:51,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3678 Valid, 3690 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:51,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-01-10 23:50:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 465. [2022-01-10 23:50:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.6803455723542116) internal successors, (778), 464 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 778 transitions. [2022-01-10 23:50:51,060 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 778 transitions. Word has length 63 [2022-01-10 23:50:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:51,060 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 778 transitions. [2022-01-10 23:50:51,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 778 transitions. [2022-01-10 23:50:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:50:51,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:51,062 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] [2022-01-10 23:50:51,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:50:51,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash 60119229, now seen corresponding path program 1 times [2022-01-10 23:50:51,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:51,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516212241] [2022-01-10 23:50:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:51,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:51,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:51,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516212241] [2022-01-10 23:50:51,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516212241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:51,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:51,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:51,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023181021] [2022-01-10 23:50:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:51,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:51,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:51,190 INFO L87 Difference]: Start difference. First operand 465 states and 778 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:51,248 INFO L93 Difference]: Finished difference Result 915 states and 1534 transitions. [2022-01-10 23:50:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:51,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 23:50:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:51,252 INFO L225 Difference]: With dead ends: 915 [2022-01-10 23:50:51,252 INFO L226 Difference]: Without dead ends: 479 [2022-01-10 23:50:51,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:51,262 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 757 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:51,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 814 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:51,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-10 23:50:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 465. [2022-01-10 23:50:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 464 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 777 transitions. [2022-01-10 23:50:51,296 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 777 transitions. Word has length 64 [2022-01-10 23:50:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:51,296 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 777 transitions. [2022-01-10 23:50:51,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 777 transitions. [2022-01-10 23:50:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:50:51,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:51,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:50:51,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2109639138, now seen corresponding path program 1 times [2022-01-10 23:50:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300048321] [2022-01-10 23:50:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:51,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:51,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300048321] [2022-01-10 23:50:51,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300048321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:51,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:51,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:51,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013887501] [2022-01-10 23:50:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:51,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:51,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:51,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:51,413 INFO L87 Difference]: Start difference. First operand 465 states and 777 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:51,597 INFO L93 Difference]: Finished difference Result 1329 states and 2231 transitions. [2022-01-10 23:50:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:50:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:50:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:51,602 INFO L225 Difference]: With dead ends: 1329 [2022-01-10 23:50:51,602 INFO L226 Difference]: Without dead ends: 898 [2022-01-10 23:50:51,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:51,603 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 3601 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:51,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3601 Valid, 1586 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-01-10 23:50:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 465. [2022-01-10 23:50:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.673866090712743) internal successors, (775), 464 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 775 transitions. [2022-01-10 23:50:51,646 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 775 transitions. Word has length 65 [2022-01-10 23:50:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:51,647 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 775 transitions. [2022-01-10 23:50:51,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 775 transitions. [2022-01-10 23:50:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:50:51,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:51,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:51,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:50:51,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1514799297, now seen corresponding path program 1 times [2022-01-10 23:50:51,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314307297] [2022-01-10 23:50:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:51,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:51,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314307297] [2022-01-10 23:50:51,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314307297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:51,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:51,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:50:51,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684890472] [2022-01-10 23:50:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:51,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:50:51,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:50:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:51,811 INFO L87 Difference]: Start difference. First operand 465 states and 775 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:52,545 INFO L93 Difference]: Finished difference Result 2202 states and 3501 transitions. [2022-01-10 23:50:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:50:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:50:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:52,553 INFO L225 Difference]: With dead ends: 2202 [2022-01-10 23:50:52,554 INFO L226 Difference]: Without dead ends: 2021 [2022-01-10 23:50:52,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:50:52,556 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 6835 mSDsluCounter, 5715 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6835 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:52,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6835 Valid, 6720 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:50:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-01-10 23:50:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 827. [2022-01-10 23:50:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.6896969696969697) internal successors, (1394), 826 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1394 transitions. [2022-01-10 23:50:52,650 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1394 transitions. Word has length 67 [2022-01-10 23:50:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:52,652 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1394 transitions. [2022-01-10 23:50:52,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1394 transitions. [2022-01-10 23:50:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:50:52,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:52,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:52,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:50:52,655 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 586984098, now seen corresponding path program 1 times [2022-01-10 23:50:52,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:52,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964181553] [2022-01-10 23:50:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:52,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:52,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964181553] [2022-01-10 23:50:52,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964181553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:52,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:52,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:52,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75314451] [2022-01-10 23:50:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:52,821 INFO L87 Difference]: Start difference. First operand 827 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:53,176 INFO L93 Difference]: Finished difference Result 2245 states and 3652 transitions. [2022-01-10 23:50:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:50:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:50:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:53,184 INFO L225 Difference]: With dead ends: 2245 [2022-01-10 23:50:53,185 INFO L226 Difference]: Without dead ends: 1951 [2022-01-10 23:50:53,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:53,186 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 1897 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:53,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 3451 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-01-10 23:50:53,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1319. [2022-01-10 23:50:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1317 states have (on average 1.6826119969627942) internal successors, (2216), 1318 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2216 transitions. [2022-01-10 23:50:53,307 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2216 transitions. Word has length 68 [2022-01-10 23:50:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:53,308 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2216 transitions. [2022-01-10 23:50:53,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2216 transitions. [2022-01-10 23:50:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:50:53,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:53,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:53,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:50:53,311 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:53,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1490225245, now seen corresponding path program 1 times [2022-01-10 23:50:53,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:53,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563787798] [2022-01-10 23:50:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:53,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:53,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563787798] [2022-01-10 23:50:53,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563787798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:53,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:53,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:50:53,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003036473] [2022-01-10 23:50:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:53,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:50:53,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:50:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:50:53,475 INFO L87 Difference]: Start difference. First operand 1319 states and 2216 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:54,231 INFO L93 Difference]: Finished difference Result 3693 states and 5808 transitions. [2022-01-10 23:50:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 23:50:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:50:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:54,244 INFO L225 Difference]: With dead ends: 3693 [2022-01-10 23:50:54,245 INFO L226 Difference]: Without dead ends: 3299 [2022-01-10 23:50:54,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2022-01-10 23:50:54,247 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 4018 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:54,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4018 Valid, 5921 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:50:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2022-01-10 23:50:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 1484. [2022-01-10 23:50:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1482 states have (on average 1.670715249662618) internal successors, (2476), 1483 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2476 transitions. [2022-01-10 23:50:54,417 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2476 transitions. Word has length 68 [2022-01-10 23:50:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:54,418 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 2476 transitions. [2022-01-10 23:50:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2476 transitions. [2022-01-10 23:50:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:50:54,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:54,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:50:54,420 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1869638266, now seen corresponding path program 1 times [2022-01-10 23:50:54,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:54,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76095522] [2022-01-10 23:50:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:54,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:54,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76095522] [2022-01-10 23:50:54,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76095522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:54,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:54,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:54,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309491161] [2022-01-10 23:50:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:54,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:50:54,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:50:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:50:54,492 INFO L87 Difference]: Start difference. First operand 1484 states and 2476 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:54,685 INFO L93 Difference]: Finished difference Result 2066 states and 3367 transitions. [2022-01-10 23:50:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:50:54,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:50:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:54,693 INFO L225 Difference]: With dead ends: 2066 [2022-01-10 23:50:54,693 INFO L226 Difference]: Without dead ends: 1742 [2022-01-10 23:50:54,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:54,726 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 791 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:54,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 1863 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-01-10 23:50:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1484. [2022-01-10 23:50:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1482 states have (on average 1.669365721997301) internal successors, (2474), 1483 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2474 transitions. [2022-01-10 23:50:54,892 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2474 transitions. Word has length 68 [2022-01-10 23:50:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:54,892 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 2474 transitions. [2022-01-10 23:50:54,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2474 transitions. [2022-01-10 23:50:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:50:54,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:54,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:50:54,895 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2074529093, now seen corresponding path program 1 times [2022-01-10 23:50:54,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175436741] [2022-01-10 23:50:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:54,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:54,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:54,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175436741] [2022-01-10 23:50:54,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175436741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:54,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:54,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:54,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182029668] [2022-01-10 23:50:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:54,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:54,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:54,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:54,999 INFO L87 Difference]: Start difference. First operand 1484 states and 2474 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:55,591 INFO L93 Difference]: Finished difference Result 3653 states and 5737 transitions. [2022-01-10 23:50:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:50:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:55,602 INFO L225 Difference]: With dead ends: 3653 [2022-01-10 23:50:55,602 INFO L226 Difference]: Without dead ends: 3096 [2022-01-10 23:50:55,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:55,604 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 1795 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:55,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 4211 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2022-01-10 23:50:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 1637. [2022-01-10 23:50:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1635 states have (on average 1.6458715596330276) internal successors, (2691), 1636 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2691 transitions. [2022-01-10 23:50:55,806 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2691 transitions. Word has length 68 [2022-01-10 23:50:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:55,806 INFO L470 AbstractCegarLoop]: Abstraction has 1637 states and 2691 transitions. [2022-01-10 23:50:55,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2691 transitions. [2022-01-10 23:50:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:50:55,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:55,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:55,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:50:55,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash -844647950, now seen corresponding path program 1 times [2022-01-10 23:50:55,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529841412] [2022-01-10 23:50:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:55,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:55,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:55,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529841412] [2022-01-10 23:50:55,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529841412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:55,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:55,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:50:55,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401704352] [2022-01-10 23:50:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:55,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:50:55,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:50:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:50:55,944 INFO L87 Difference]: Start difference. First operand 1637 states and 2691 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:56,952 INFO L93 Difference]: Finished difference Result 8309 states and 13446 transitions. [2022-01-10 23:50:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:50:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:56,985 INFO L225 Difference]: With dead ends: 8309 [2022-01-10 23:50:56,985 INFO L226 Difference]: Without dead ends: 7714 [2022-01-10 23:50:56,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:50:56,989 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 3872 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:56,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 4154 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2022-01-10 23:50:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 3219. [2022-01-10 23:50:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3217 states have (on average 1.647186820018651) internal successors, (5299), 3218 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5299 transitions. [2022-01-10 23:50:57,361 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5299 transitions. Word has length 69 [2022-01-10 23:50:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:57,361 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 5299 transitions. [2022-01-10 23:50:57,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5299 transitions. [2022-01-10 23:50:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:50:57,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:57,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:57,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:50:57,366 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash -389326409, now seen corresponding path program 1 times [2022-01-10 23:50:57,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890653915] [2022-01-10 23:50:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:57,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:57,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:57,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890653915] [2022-01-10 23:50:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890653915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:57,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:50:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66782189] [2022-01-10 23:50:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:57,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:50:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:50:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:57,495 INFO L87 Difference]: Start difference. First operand 3219 states and 5299 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:58,068 INFO L93 Difference]: Finished difference Result 5509 states and 8752 transitions. [2022-01-10 23:50:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:50:58,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:50:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:58,078 INFO L225 Difference]: With dead ends: 5509 [2022-01-10 23:50:58,078 INFO L226 Difference]: Without dead ends: 3788 [2022-01-10 23:50:58,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-10 23:50:58,082 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 1532 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:58,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 3592 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2022-01-10 23:50:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3187. [2022-01-10 23:50:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3185 states have (on average 1.6417582417582417) internal successors, (5229), 3186 states have internal predecessors, (5229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5229 transitions. [2022-01-10 23:50:58,406 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5229 transitions. Word has length 69 [2022-01-10 23:50:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:58,407 INFO L470 AbstractCegarLoop]: Abstraction has 3187 states and 5229 transitions. [2022-01-10 23:50:58,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5229 transitions. [2022-01-10 23:50:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:50:58,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:58,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:58,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:50:58,411 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash 688973195, now seen corresponding path program 1 times [2022-01-10 23:50:58,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:58,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696578353] [2022-01-10 23:50:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:58,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:58,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:58,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696578353] [2022-01-10 23:50:58,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696578353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:58,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:58,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:58,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284906105] [2022-01-10 23:50:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:58,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:58,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:58,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:58,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:58,489 INFO L87 Difference]: Start difference. First operand 3187 states and 5229 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:59,380 INFO L93 Difference]: Finished difference Result 9427 states and 15475 transitions. [2022-01-10 23:50:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:50:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:50:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:59,402 INFO L225 Difference]: With dead ends: 9427 [2022-01-10 23:50:59,402 INFO L226 Difference]: Without dead ends: 6277 [2022-01-10 23:50:59,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:59,409 INFO L933 BasicCegarLoop]: 1452 mSDtfsCounter, 2235 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:59,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2235 Valid, 2207 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2022-01-10 23:50:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 3187. [2022-01-10 23:50:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3185 states have (on average 1.6414442700156986) internal successors, (5228), 3186 states have internal predecessors, (5228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5228 transitions. [2022-01-10 23:50:59,775 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5228 transitions. Word has length 70 [2022-01-10 23:50:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:59,775 INFO L470 AbstractCegarLoop]: Abstraction has 3187 states and 5228 transitions. [2022-01-10 23:50:59,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5228 transitions. [2022-01-10 23:50:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:50:59,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:59,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:50:59,780 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1458143210, now seen corresponding path program 1 times [2022-01-10 23:50:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:59,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609193635] [2022-01-10 23:50:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:59,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:59,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:59,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609193635] [2022-01-10 23:50:59,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609193635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:59,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:59,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:50:59,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850779108] [2022-01-10 23:50:59,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:59,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:50:59,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:50:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:50:59,919 INFO L87 Difference]: Start difference. First operand 3187 states and 5228 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:01,626 INFO L93 Difference]: Finished difference Result 8320 states and 12872 transitions. [2022-01-10 23:51:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 23:51:01,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:51:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:01,643 INFO L225 Difference]: With dead ends: 8320 [2022-01-10 23:51:01,643 INFO L226 Difference]: Without dead ends: 7549 [2022-01-10 23:51:01,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 23:51:01,648 INFO L933 BasicCegarLoop]: 1080 mSDtfsCounter, 5289 mSDsluCounter, 7415 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5289 SdHoareTripleChecker+Valid, 8495 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:01,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5289 Valid, 8495 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:51:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7549 states. [2022-01-10 23:51:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 3353. [2022-01-10 23:51:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3351 states have (on average 1.637720083557147) internal successors, (5488), 3352 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5488 transitions. [2022-01-10 23:51:02,173 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5488 transitions. Word has length 70 [2022-01-10 23:51:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:02,173 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 5488 transitions. [2022-01-10 23:51:02,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5488 transitions. [2022-01-10 23:51:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:51:02,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:02,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:02,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:51:02,179 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -867917198, now seen corresponding path program 1 times [2022-01-10 23:51:02,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:02,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561792369] [2022-01-10 23:51:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:02,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:02,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561792369] [2022-01-10 23:51:02,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561792369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:02,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:02,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:51:02,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622966752] [2022-01-10 23:51:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:02,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:51:02,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:51:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:51:02,292 INFO L87 Difference]: Start difference. First operand 3353 states and 5488 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:03,247 INFO L93 Difference]: Finished difference Result 6505 states and 10154 transitions. [2022-01-10 23:51:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:51:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:51:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:03,258 INFO L225 Difference]: With dead ends: 6505 [2022-01-10 23:51:03,259 INFO L226 Difference]: Without dead ends: 5388 [2022-01-10 23:51:03,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 23:51:03,261 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 2485 mSDsluCounter, 4738 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:03,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2485 Valid, 6012 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2022-01-10 23:51:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 3390. [2022-01-10 23:51:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3388 states have (on average 1.629279811097993) internal successors, (5520), 3389 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5520 transitions. [2022-01-10 23:51:03,655 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5520 transitions. Word has length 70 [2022-01-10 23:51:03,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:03,655 INFO L470 AbstractCegarLoop]: Abstraction has 3390 states and 5520 transitions. [2022-01-10 23:51:03,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5520 transitions. [2022-01-10 23:51:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:51:03,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:03,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:03,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:51:03,660 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1942731803, now seen corresponding path program 1 times [2022-01-10 23:51:03,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:03,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763956308] [2022-01-10 23:51:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:03,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:03,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:03,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763956308] [2022-01-10 23:51:03,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763956308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:03,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:03,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:03,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686854003] [2022-01-10 23:51:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:03,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:03,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:03,765 INFO L87 Difference]: Start difference. First operand 3390 states and 5520 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:04,928 INFO L93 Difference]: Finished difference Result 9992 states and 15877 transitions. [2022-01-10 23:51:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:51:04,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:51:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:04,944 INFO L225 Difference]: With dead ends: 9992 [2022-01-10 23:51:04,944 INFO L226 Difference]: Without dead ends: 9178 [2022-01-10 23:51:04,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:51:04,948 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1648 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:04,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1648 Valid, 3001 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9178 states. [2022-01-10 23:51:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9178 to 6699. [2022-01-10 23:51:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6697 states have (on average 1.6320740630132895) internal successors, (10930), 6698 states have internal predecessors, (10930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 10930 transitions. [2022-01-10 23:51:05,796 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 10930 transitions. Word has length 71 [2022-01-10 23:51:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:05,797 INFO L470 AbstractCegarLoop]: Abstraction has 6699 states and 10930 transitions. [2022-01-10 23:51:05,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 10930 transitions. [2022-01-10 23:51:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:51:05,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:05,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:05,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:51:05,804 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2044500304, now seen corresponding path program 1 times [2022-01-10 23:51:05,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:05,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065781665] [2022-01-10 23:51:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:05,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:05,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:05,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065781665] [2022-01-10 23:51:05,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065781665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:05,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:51:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796059937] [2022-01-10 23:51:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:05,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:51:05,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:51:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:51:05,942 INFO L87 Difference]: Start difference. First operand 6699 states and 10930 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:07,590 INFO L93 Difference]: Finished difference Result 10646 states and 16757 transitions. [2022-01-10 23:51:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 23:51:07,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:51:07,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:07,600 INFO L225 Difference]: With dead ends: 10646 [2022-01-10 23:51:07,601 INFO L226 Difference]: Without dead ends: 9041 [2022-01-10 23:51:07,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2022-01-10 23:51:07,604 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 4802 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 4781 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:07,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 4781 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:51:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2022-01-10 23:51:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 6665. [2022-01-10 23:51:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6663 states have (on average 1.6316974335884737) internal successors, (10872), 6664 states have internal predecessors, (10872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 10872 transitions. [2022-01-10 23:51:08,537 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 10872 transitions. Word has length 72 [2022-01-10 23:51:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:08,537 INFO L470 AbstractCegarLoop]: Abstraction has 6665 states and 10872 transitions. [2022-01-10 23:51:08,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 10872 transitions. [2022-01-10 23:51:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:51:08,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:08,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:08,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:51:08,544 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 237045841, now seen corresponding path program 1 times [2022-01-10 23:51:08,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:08,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344065756] [2022-01-10 23:51:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:08,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:08,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:08,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344065756] [2022-01-10 23:51:08,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344065756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:08,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:08,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:08,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815005504] [2022-01-10 23:51:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:08,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:08,715 INFO L87 Difference]: Start difference. First operand 6665 states and 10872 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:13,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:13,016 INFO L93 Difference]: Finished difference Result 24449 states and 37312 transitions. [2022-01-10 23:51:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:13,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:51:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:13,040 INFO L225 Difference]: With dead ends: 24449 [2022-01-10 23:51:13,041 INFO L226 Difference]: Without dead ends: 22370 [2022-01-10 23:51:13,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:13,048 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 1747 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:13,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 3595 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22370 states. [2022-01-10 23:51:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22370 to 10228. [2022-01-10 23:51:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10228 states, 10226 states have (on average 1.5764717387052611) internal successors, (16121), 10227 states have internal predecessors, (16121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 16121 transitions. [2022-01-10 23:51:14,753 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 16121 transitions. Word has length 72 [2022-01-10 23:51:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:14,753 INFO L470 AbstractCegarLoop]: Abstraction has 10228 states and 16121 transitions. [2022-01-10 23:51:14,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 16121 transitions. [2022-01-10 23:51:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:51:14,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:14,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:14,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:51:14,760 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1240566310, now seen corresponding path program 1 times [2022-01-10 23:51:14,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:14,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324602238] [2022-01-10 23:51:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:14,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:14,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:14,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324602238] [2022-01-10 23:51:14,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324602238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:14,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:51:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819385758] [2022-01-10 23:51:14,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:14,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:14,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:14,859 INFO L87 Difference]: Start difference. First operand 10228 states and 16121 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:19,339 INFO L93 Difference]: Finished difference Result 22789 states and 34571 transitions. [2022-01-10 23:51:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:51:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:51:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:19,372 INFO L225 Difference]: With dead ends: 22789 [2022-01-10 23:51:19,372 INFO L226 Difference]: Without dead ends: 22778 [2022-01-10 23:51:19,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:51:19,376 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 1088 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:19,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 3761 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22778 states. [2022-01-10 23:51:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22778 to 10305. [2022-01-10 23:51:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10305 states, 10303 states have (on average 1.5718722702125594) internal successors, (16195), 10304 states have internal predecessors, (16195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 16195 transitions. [2022-01-10 23:51:20,931 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 16195 transitions. Word has length 73 [2022-01-10 23:51:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:20,931 INFO L470 AbstractCegarLoop]: Abstraction has 10305 states and 16195 transitions. [2022-01-10 23:51:20,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 16195 transitions. [2022-01-10 23:51:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:51:20,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:20,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:20,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:51:20,939 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash -332089765, now seen corresponding path program 1 times [2022-01-10 23:51:20,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:20,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477388640] [2022-01-10 23:51:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:20,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:21,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:21,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477388640] [2022-01-10 23:51:21,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477388640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:21,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:21,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:51:21,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886257241] [2022-01-10 23:51:21,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:21,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:51:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:51:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:51:21,116 INFO L87 Difference]: Start difference. First operand 10305 states and 16195 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:23,939 INFO L93 Difference]: Finished difference Result 20018 states and 30322 transitions. [2022-01-10 23:51:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 23:51:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:51:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:23,957 INFO L225 Difference]: With dead ends: 20018 [2022-01-10 23:51:23,957 INFO L226 Difference]: Without dead ends: 13975 [2022-01-10 23:51:23,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2022-01-10 23:51:23,963 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 1895 mSDsluCounter, 4608 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:23,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 5478 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13975 states. [2022-01-10 23:51:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13975 to 10225. [2022-01-10 23:51:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10225 states, 10223 states have (on average 1.5622615670546807) internal successors, (15971), 10224 states have internal predecessors, (15971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10225 states to 10225 states and 15971 transitions. [2022-01-10 23:51:25,578 INFO L78 Accepts]: Start accepts. Automaton has 10225 states and 15971 transitions. Word has length 73 [2022-01-10 23:51:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 10225 states and 15971 transitions. [2022-01-10 23:51:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 10225 states and 15971 transitions. [2022-01-10 23:51:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:51:25,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:25,586 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] [2022-01-10 23:51:25,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:51:25,586 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash 52215282, now seen corresponding path program 1 times [2022-01-10 23:51:25,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:25,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141619012] [2022-01-10 23:51:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:25,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:25,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141619012] [2022-01-10 23:51:25,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141619012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:25,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:25,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:25,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404275037] [2022-01-10 23:51:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:25,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:51:25,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:51:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:51:25,667 INFO L87 Difference]: Start difference. First operand 10225 states and 15971 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:29,796 INFO L93 Difference]: Finished difference Result 28318 states and 42031 transitions. [2022-01-10 23:51:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:51:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:51:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:29,821 INFO L225 Difference]: With dead ends: 28318 [2022-01-10 23:51:29,822 INFO L226 Difference]: Without dead ends: 21279 [2022-01-10 23:51:29,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:29,830 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 683 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:29,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2261 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:51:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21279 states. [2022-01-10 23:51:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21279 to 10313. [2022-01-10 23:51:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10313 states, 10311 states have (on average 1.557462903695083) internal successors, (16059), 10312 states have internal predecessors, (16059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10313 states to 10313 states and 16059 transitions. [2022-01-10 23:51:31,576 INFO L78 Accepts]: Start accepts. Automaton has 10313 states and 16059 transitions. Word has length 76 [2022-01-10 23:51:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:31,576 INFO L470 AbstractCegarLoop]: Abstraction has 10313 states and 16059 transitions. [2022-01-10 23:51:31,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10313 states and 16059 transitions. [2022-01-10 23:51:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:51:31,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:31,581 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] [2022-01-10 23:51:31,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:51:31,582 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1178893809, now seen corresponding path program 1 times [2022-01-10 23:51:31,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:31,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161079153] [2022-01-10 23:51:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:31,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:31,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161079153] [2022-01-10 23:51:31,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161079153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:31,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:31,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:31,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332994096] [2022-01-10 23:51:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:31,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:31,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:31,666 INFO L87 Difference]: Start difference. First operand 10313 states and 16059 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:51:40,429 INFO L93 Difference]: Finished difference Result 49683 states and 73747 transitions. [2022-01-10 23:51:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:51:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:51:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:51:40,485 INFO L225 Difference]: With dead ends: 49683 [2022-01-10 23:51:40,485 INFO L226 Difference]: Without dead ends: 42596 [2022-01-10 23:51:40,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:51:40,500 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 2305 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:51:40,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2305 Valid, 3194 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:51:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42596 states. [2022-01-10 23:51:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42596 to 19613. [2022-01-10 23:51:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19613 states, 19611 states have (on average 1.5556065473458773) internal successors, (30507), 19612 states have internal predecessors, (30507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19613 states to 19613 states and 30507 transitions. [2022-01-10 23:51:43,988 INFO L78 Accepts]: Start accepts. Automaton has 19613 states and 30507 transitions. Word has length 76 [2022-01-10 23:51:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:51:43,988 INFO L470 AbstractCegarLoop]: Abstraction has 19613 states and 30507 transitions. [2022-01-10 23:51:43,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:51:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19613 states and 30507 transitions. [2022-01-10 23:51:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:51:43,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:51:43,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:51:43,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:51:43,999 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:51:43,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:51:43,999 INFO L85 PathProgramCache]: Analyzing trace with hash -683622710, now seen corresponding path program 1 times [2022-01-10 23:51:43,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:51:43,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227215520] [2022-01-10 23:51:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:51:43,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:51:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:51:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:51:44,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:51:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227215520] [2022-01-10 23:51:44,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227215520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:51:44,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:51:44,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:51:44,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693441775] [2022-01-10 23:51:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:51:44,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:51:44,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:51:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:51:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:51:44,128 INFO L87 Difference]: Start difference. First operand 19613 states and 30507 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)