/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_SUM.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:04:29,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:04:29,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:04:29,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:04:29,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:04:29,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:04:29,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:04:29,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:04:29,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:04:29,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:04:29,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:04:29,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:04:29,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:04:29,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:04:29,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:04:29,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:04:29,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:04:29,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:04:29,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:04:29,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:04:29,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:04:29,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:04:29,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:04:29,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:04:29,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:04:29,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:04:29,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:04:29,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:04:29,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:04:29,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:04:29,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:04:29,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:04:29,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:04:29,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:04:29,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:04:29,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:04:29,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:04:29,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:04:29,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:04:29,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:04:29,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:04:29,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:04:29,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:04:29,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:04:29,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:04:29,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:04:29,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:04:29,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:04:29,190 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:04:29,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:04:29,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:04:29,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:04:29,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:04:29,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:04:29,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:04:29,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:04:29,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:04:29,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:04:29,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:04:29,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:04:29,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:04:29,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:04:29,197 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:04:29,197 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:04:29,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:04:29,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:04:29,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:04:29,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:04:29,495 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:04:29,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c [2022-01-11 07:04:29,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68924fb56/42bc495aef4a468da08ad3a4b0339348/FLAG21d55a4d7 [2022-01-11 07:04:30,465 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:04:30,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c [2022-01-11 07:04:30,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68924fb56/42bc495aef4a468da08ad3a4b0339348/FLAG21d55a4d7 [2022-01-11 07:04:30,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68924fb56/42bc495aef4a468da08ad3a4b0339348 [2022-01-11 07:04:30,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:04:30,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:04:30,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:04:30,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:04:30,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:04:30,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:04:30" (1/1) ... [2022-01-11 07:04:30,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700ef7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:30, skipping insertion in model container [2022-01-11 07:04:30,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:04:30" (1/1) ... [2022-01-11 07:04:30,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:04:31,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:04:32,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c[381679,381692] [2022-01-11 07:04:32,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c[383339,383352] [2022-01-11 07:04:32,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:04:32,771 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:04:33,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c[381679,381692] [2022-01-11 07:04:33,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.01.cil-1.c[383339,383352] [2022-01-11 07:04:33,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:04:33,611 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:04:33,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33 WrapperNode [2022-01-11 07:04:33,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:04:33,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:04:33,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:04:33,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:04:33,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:33,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:33,992 INFO L137 Inliner]: procedures = 47, calls = 44, calls flagged for inlining = 39, calls inlined = 48, statements flattened = 12740 [2022-01-11 07:04:33,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:04:33,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:04:33,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:04:33,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:04:34,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:04:34,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:04:34,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:04:34,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:04:34,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (1/1) ... [2022-01-11 07:04:34,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:04:34,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:04:34,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:04:34,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:04:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:04:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:04:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:04:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:04:34,746 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:04:34,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:04:43,136 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:04:43,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:04:43,167 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-11 07:04:43,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:04:43 BoogieIcfgContainer [2022-01-11 07:04:43,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:04:43,172 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:04:43,172 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:04:43,173 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:04:43,176 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:04:43" (1/1) ... [2022-01-11 07:04:44,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:04:44 BasicIcfg [2022-01-11 07:04:44,775 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:04:44,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:04:44,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:04:44,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:04:44,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:04:30" (1/4) ... [2022-01-11 07:04:44,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e26ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:04:44, skipping insertion in model container [2022-01-11 07:04:44,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:04:33" (2/4) ... [2022-01-11 07:04:44,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e26ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:04:44, skipping insertion in model container [2022-01-11 07:04:44,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:04:43" (3/4) ... [2022-01-11 07:04:44,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e26ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:04:44, skipping insertion in model container [2022-01-11 07:04:44,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:04:44" (4/4) ... [2022-01-11 07:04:44,782 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.01.cil-1.cTransformedIcfg [2022-01-11 07:04:44,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:04:44,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:04:44,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:04:44,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:04:44,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:04:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 2336 states, 2333 states have (on average 1.8495499357051006) internal successors, (4315), 2335 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:44,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:44,895 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] [2022-01-11 07:04:44,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1694377808, now seen corresponding path program 1 times [2022-01-11 07:04:44,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:44,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909842017] [2022-01-11 07:04:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:44,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:45,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:45,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909842017] [2022-01-11 07:04:45,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909842017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:45,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:45,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:45,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446680074] [2022-01-11 07:04:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:45,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:45,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:45,193 INFO L87 Difference]: Start difference. First operand has 2336 states, 2333 states have (on average 1.8495499357051006) internal successors, (4315), 2335 states have internal predecessors, (4315), 0 states have call successors, (0), 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 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:45,461 INFO L93 Difference]: Finished difference Result 4768 states and 8777 transitions. [2022-01-11 07:04:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:45,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:45,490 INFO L225 Difference]: With dead ends: 4768 [2022-01-11 07:04:45,490 INFO L226 Difference]: Without dead ends: 2370 [2022-01-11 07:04:45,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:45,503 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 4206 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:45,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4206 Valid, 4404 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:04:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-01-11 07:04:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2368. [2022-01-11 07:04:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.8245984784446323) internal successors, (4317), 2367 states have internal predecessors, (4317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 4317 transitions. [2022-01-11 07:04:45,824 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 4317 transitions. Word has length 44 [2022-01-11 07:04:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:45,825 INFO L470 AbstractCegarLoop]: Abstraction has 2368 states and 4317 transitions. [2022-01-11 07:04:45,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 4317 transitions. [2022-01-11 07:04:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:45,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:45,832 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] [2022-01-11 07:04:45,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:04:45,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:45,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1494761104, now seen corresponding path program 1 times [2022-01-11 07:04:45,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444607727] [2022-01-11 07:04:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:45,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:45,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444607727] [2022-01-11 07:04:45,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444607727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:45,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:45,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423188227] [2022-01-11 07:04:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:45,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:45,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:45,937 INFO L87 Difference]: Start difference. First operand 2368 states and 4317 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:46,022 INFO L93 Difference]: Finished difference Result 2605 states and 4662 transitions. [2022-01-11 07:04:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:46,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:46,033 INFO L225 Difference]: With dead ends: 2605 [2022-01-11 07:04:46,035 INFO L226 Difference]: Without dead ends: 2368 [2022-01-11 07:04:46,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,038 INFO L933 BasicCegarLoop]: 4155 mSDtfsCounter, 4132 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:46,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4132 Valid, 4173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-01-11 07:04:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2022-01-11 07:04:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.8186813186813187) internal successors, (4303), 2367 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 4303 transitions. [2022-01-11 07:04:46,107 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 4303 transitions. Word has length 44 [2022-01-11 07:04:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:46,107 INFO L470 AbstractCegarLoop]: Abstraction has 2368 states and 4303 transitions. [2022-01-11 07:04:46,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 4303 transitions. [2022-01-11 07:04:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:46,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:46,117 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] [2022-01-11 07:04:46,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:04:46,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1257472783, now seen corresponding path program 1 times [2022-01-11 07:04:46,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:46,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243876173] [2022-01-11 07:04:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:46,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:46,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:46,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243876173] [2022-01-11 07:04:46,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243876173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:46,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:46,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:46,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962066927] [2022-01-11 07:04:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:46,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,189 INFO L87 Difference]: Start difference. First operand 2368 states and 4303 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:46,256 INFO L93 Difference]: Finished difference Result 2604 states and 4633 transitions. [2022-01-11 07:04:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:46,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:46,267 INFO L225 Difference]: With dead ends: 2604 [2022-01-11 07:04:46,267 INFO L226 Difference]: Without dead ends: 2368 [2022-01-11 07:04:46,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,275 INFO L933 BasicCegarLoop]: 4146 mSDtfsCounter, 4123 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:46,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 4163 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-01-11 07:04:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2022-01-11 07:04:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2366 states have (on average 1.812764158918005) internal successors, (4289), 2367 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 4289 transitions. [2022-01-11 07:04:46,341 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 4289 transitions. Word has length 44 [2022-01-11 07:04:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:46,342 INFO L470 AbstractCegarLoop]: Abstraction has 2368 states and 4289 transitions. [2022-01-11 07:04:46,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 4289 transitions. [2022-01-11 07:04:46,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:46,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:46,344 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] [2022-01-11 07:04:46,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:04:46,344 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash 647006126, now seen corresponding path program 1 times [2022-01-11 07:04:46,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:46,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935759132] [2022-01-11 07:04:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:46,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:46,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935759132] [2022-01-11 07:04:46,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935759132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:46,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:46,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:04:46,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335026758] [2022-01-11 07:04:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:46,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:04:46,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:04:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:04:46,459 INFO L87 Difference]: Start difference. First operand 2368 states and 4289 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:46,614 INFO L93 Difference]: Finished difference Result 2770 states and 4836 transitions. [2022-01-11 07:04:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:04:46,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:46,628 INFO L225 Difference]: With dead ends: 2770 [2022-01-11 07:04:46,628 INFO L226 Difference]: Without dead ends: 2548 [2022-01-11 07:04:46,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:04:46,631 INFO L933 BasicCegarLoop]: 4145 mSDtfsCounter, 417 mSDsluCounter, 12325 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 16470 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:46,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 16470 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-11 07:04:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2374. [2022-01-11 07:04:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.8081787521079258) internal successors, (4289), 2373 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 4289 transitions. [2022-01-11 07:04:46,705 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 4289 transitions. Word has length 44 [2022-01-11 07:04:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:46,705 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 4289 transitions. [2022-01-11 07:04:46,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 4289 transitions. [2022-01-11 07:04:46,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:46,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:46,706 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] [2022-01-11 07:04:46,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:04:46,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 858357039, now seen corresponding path program 1 times [2022-01-11 07:04:46,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199355754] [2022-01-11 07:04:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:46,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:46,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199355754] [2022-01-11 07:04:46,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199355754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:46,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:46,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446324742] [2022-01-11 07:04:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:46,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,765 INFO L87 Difference]: Start difference. First operand 2374 states and 4289 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:46,825 INFO L93 Difference]: Finished difference Result 2618 states and 4608 transitions. [2022-01-11 07:04:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:46,838 INFO L225 Difference]: With dead ends: 2618 [2022-01-11 07:04:46,838 INFO L226 Difference]: Without dead ends: 2374 [2022-01-11 07:04:46,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,840 INFO L933 BasicCegarLoop]: 4141 mSDtfsCounter, 4120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:46,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4120 Valid, 4141 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-11 07:04:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2022-01-11 07:04:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2372 states have (on average 1.804806070826307) internal successors, (4281), 2373 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 4281 transitions. [2022-01-11 07:04:46,907 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 4281 transitions. Word has length 44 [2022-01-11 07:04:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:46,910 INFO L470 AbstractCegarLoop]: Abstraction has 2374 states and 4281 transitions. [2022-01-11 07:04:46,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 4281 transitions. [2022-01-11 07:04:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:04:46,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:46,915 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] [2022-01-11 07:04:46,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:04:46,915 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash -138715314, now seen corresponding path program 1 times [2022-01-11 07:04:46,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173515028] [2022-01-11 07:04:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:46,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:46,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:46,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173515028] [2022-01-11 07:04:46,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173515028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:46,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:46,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:46,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569417151] [2022-01-11 07:04:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:46,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:46,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:46,990 INFO L87 Difference]: Start difference. First operand 2374 states and 4281 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:47,068 INFO L93 Difference]: Finished difference Result 2820 states and 4854 transitions. [2022-01-11 07:04:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 07:04:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:47,081 INFO L225 Difference]: With dead ends: 2820 [2022-01-11 07:04:47,081 INFO L226 Difference]: Without dead ends: 2580 [2022-01-11 07:04:47,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,084 INFO L933 BasicCegarLoop]: 4138 mSDtfsCounter, 4087 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:47,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4087 Valid, 4277 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-01-11 07:04:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2548. [2022-01-11 07:04:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7663000785545955) internal successors, (4497), 2547 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4497 transitions. [2022-01-11 07:04:47,166 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4497 transitions. Word has length 44 [2022-01-11 07:04:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:47,166 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4497 transitions. [2022-01-11 07:04:47,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4497 transitions. [2022-01-11 07:04:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 07:04:47,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:47,168 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:47,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:04:47,168 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2117254604, now seen corresponding path program 1 times [2022-01-11 07:04:47,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:47,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399893079] [2022-01-11 07:04:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:47,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:47,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:47,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399893079] [2022-01-11 07:04:47,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399893079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:47,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:47,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:47,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345189702] [2022-01-11 07:04:47,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:47,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:47,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,224 INFO L87 Difference]: Start difference. First operand 2548 states and 4497 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-11 07:04:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:47,423 INFO L93 Difference]: Finished difference Result 3296 states and 5445 transitions. [2022-01-11 07:04:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2022-01-11 07:04:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:47,436 INFO L225 Difference]: With dead ends: 3296 [2022-01-11 07:04:47,436 INFO L226 Difference]: Without dead ends: 2888 [2022-01-11 07:04:47,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,439 INFO L933 BasicCegarLoop]: 4135 mSDtfsCounter, 4086 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:47,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4086 Valid, 4274 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-01-11 07:04:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2854. [2022-01-11 07:04:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2852 states have (on average 1.7121318373071528) internal successors, (4883), 2853 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4883 transitions. [2022-01-11 07:04:47,550 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4883 transitions. Word has length 70 [2022-01-11 07:04:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:47,551 INFO L470 AbstractCegarLoop]: Abstraction has 2854 states and 4883 transitions. [2022-01-11 07:04:47,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-11 07:04:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4883 transitions. [2022-01-11 07:04:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 07:04:47,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:47,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:47,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:04:47,552 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1430700532, now seen corresponding path program 1 times [2022-01-11 07:04:47,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:47,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167242327] [2022-01-11 07:04:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:47,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:47,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:47,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167242327] [2022-01-11 07:04:47,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167242327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:47,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:47,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522618597] [2022-01-11 07:04:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:47,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:47,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,623 INFO L87 Difference]: Start difference. First operand 2854 states and 4883 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-11 07:04:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:47,764 INFO L93 Difference]: Finished difference Result 4187 states and 6563 transitions. [2022-01-11 07:04:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 [2022-01-11 07:04:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:47,782 INFO L225 Difference]: With dead ends: 4187 [2022-01-11 07:04:47,782 INFO L226 Difference]: Without dead ends: 3483 [2022-01-11 07:04:47,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,786 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 4056 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:47,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4056 Valid, 4322 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2022-01-11 07:04:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3481. [2022-01-11 07:04:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3479 states have (on average 1.6202931876976143) internal successors, (5637), 3480 states have internal predecessors, (5637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 5637 transitions. [2022-01-11 07:04:47,959 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 5637 transitions. Word has length 70 [2022-01-11 07:04:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:47,960 INFO L470 AbstractCegarLoop]: Abstraction has 3481 states and 5637 transitions. [2022-01-11 07:04:47,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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) [2022-01-11 07:04:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 5637 transitions. [2022-01-11 07:04:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 07:04:47,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:47,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:47,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:04:47,963 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 689586667, now seen corresponding path program 1 times [2022-01-11 07:04:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116514418] [2022-01-11 07:04:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:47,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:04:47,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:47,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116514418] [2022-01-11 07:04:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116514418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:47,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:47,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:47,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844290654] [2022-01-11 07:04:47,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:47,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:47,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:47,997 INFO L87 Difference]: Start difference. First operand 3481 states and 5637 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:48,133 INFO L93 Difference]: Finished difference Result 4789 states and 7260 transitions. [2022-01-11 07:04:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2022-01-11 07:04:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:48,164 INFO L225 Difference]: With dead ends: 4789 [2022-01-11 07:04:48,164 INFO L226 Difference]: Without dead ends: 3458 [2022-01-11 07:04:48,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:48,170 INFO L933 BasicCegarLoop]: 4140 mSDtfsCounter, 178 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 8098 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:48,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 8098 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2022-01-11 07:04:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3458. [2022-01-11 07:04:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3456 states have (on average 1.6238425925925926) internal successors, (5612), 3457 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5612 transitions. [2022-01-11 07:04:48,314 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5612 transitions. Word has length 70 [2022-01-11 07:04:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:48,315 INFO L470 AbstractCegarLoop]: Abstraction has 3458 states and 5612 transitions. [2022-01-11 07:04:48,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5612 transitions. [2022-01-11 07:04:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 07:04:48,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:48,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:48,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:04:48,317 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1462835447, now seen corresponding path program 1 times [2022-01-11 07:04:48,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:48,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744308038] [2022-01-11 07:04:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:48,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:48,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744308038] [2022-01-11 07:04:48,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744308038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:48,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:48,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:48,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407130915] [2022-01-11 07:04:48,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:48,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:48,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:48,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:48,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:48,377 INFO L87 Difference]: Start difference. First operand 3458 states and 5612 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:48,597 INFO L93 Difference]: Finished difference Result 5872 states and 8590 transitions. [2022-01-11 07:04:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 07:04:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:48,609 INFO L225 Difference]: With dead ends: 5872 [2022-01-11 07:04:48,609 INFO L226 Difference]: Without dead ends: 4564 [2022-01-11 07:04:48,612 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 [2022-01-11 07:04:48,612 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 133 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 8395 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:48,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 8395 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-01-11 07:04:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4564. [2022-01-11 07:04:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4562 states have (on average 1.5131521262604122) internal successors, (6903), 4563 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6903 transitions. [2022-01-11 07:04:48,809 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6903 transitions. Word has length 71 [2022-01-11 07:04:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:48,810 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 6903 transitions. [2022-01-11 07:04:48,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6903 transitions. [2022-01-11 07:04:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 07:04:48,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:48,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:48,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:04:48,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 447626963, now seen corresponding path program 1 times [2022-01-11 07:04:48,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10747561] [2022-01-11 07:04:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:48,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 07:04:48,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:48,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10747561] [2022-01-11 07:04:48,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10747561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:48,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:48,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:48,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093089988] [2022-01-11 07:04:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:48,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:48,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:48,862 INFO L87 Difference]: Start difference. First operand 4564 states and 6903 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:49,017 INFO L93 Difference]: Finished difference Result 6452 states and 9194 transitions. [2022-01-11 07:04:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 07:04:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:49,028 INFO L225 Difference]: With dead ends: 6452 [2022-01-11 07:04:49,028 INFO L226 Difference]: Without dead ends: 4596 [2022-01-11 07:04:49,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:49,033 INFO L933 BasicCegarLoop]: 4142 mSDtfsCounter, 4084 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:49,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4084 Valid, 4303 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2022-01-11 07:04:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 4516. [2022-01-11 07:04:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 4514 states have (on average 1.499113867966327) internal successors, (6767), 4515 states have internal predecessors, (6767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6767 transitions. [2022-01-11 07:04:49,217 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6767 transitions. Word has length 103 [2022-01-11 07:04:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:49,217 INFO L470 AbstractCegarLoop]: Abstraction has 4516 states and 6767 transitions. [2022-01-11 07:04:49,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6767 transitions. [2022-01-11 07:04:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 07:04:49,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:49,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:49,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:04:49,221 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1281346907, now seen corresponding path program 1 times [2022-01-11 07:04:49,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:49,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606950429] [2022-01-11 07:04:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:49,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 07:04:49,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606950429] [2022-01-11 07:04:49,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606950429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:49,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:49,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:49,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718627363] [2022-01-11 07:04:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:49,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:49,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:49,265 INFO L87 Difference]: Start difference. First operand 4516 states and 6767 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:49,426 INFO L93 Difference]: Finished difference Result 6544 states and 9153 transitions. [2022-01-11 07:04:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 104 [2022-01-11 07:04:49,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:49,436 INFO L225 Difference]: With dead ends: 6544 [2022-01-11 07:04:49,436 INFO L226 Difference]: Without dead ends: 4202 [2022-01-11 07:04:49,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:49,442 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 115 mSDsluCounter, 4127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:49,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 8363 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2022-01-11 07:04:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4200. [2022-01-11 07:04:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 4198 states have (on average 1.5147689375893283) internal successors, (6359), 4199 states have internal predecessors, (6359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 6359 transitions. [2022-01-11 07:04:49,621 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 6359 transitions. Word has length 104 [2022-01-11 07:04:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:49,621 INFO L470 AbstractCegarLoop]: Abstraction has 4200 states and 6359 transitions. [2022-01-11 07:04:49,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 6359 transitions. [2022-01-11 07:04:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 07:04:49,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:49,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:49,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:04:49,625 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1908383344, now seen corresponding path program 1 times [2022-01-11 07:04:49,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275805621] [2022-01-11 07:04:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:49,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:49,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:49,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275805621] [2022-01-11 07:04:49,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275805621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:49,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:49,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:04:49,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200470358] [2022-01-11 07:04:49,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:49,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:49,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:49,686 INFO L87 Difference]: Start difference. First operand 4200 states and 6359 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:49,819 INFO L93 Difference]: Finished difference Result 5204 states and 7547 transitions. [2022-01-11 07:04:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:04:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 07:04:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:49,827 INFO L225 Difference]: With dead ends: 5204 [2022-01-11 07:04:49,827 INFO L226 Difference]: Without dead ends: 3684 [2022-01-11 07:04:49,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:49,831 INFO L933 BasicCegarLoop]: 4239 mSDtfsCounter, 108 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:49,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 8337 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2022-01-11 07:04:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3674. [2022-01-11 07:04:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3672 states have (on average 1.5607298474945535) internal successors, (5731), 3673 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 5731 transitions. [2022-01-11 07:04:49,972 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 5731 transitions. Word has length 104 [2022-01-11 07:04:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:49,973 INFO L470 AbstractCegarLoop]: Abstraction has 3674 states and 5731 transitions. [2022-01-11 07:04:49,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 5731 transitions. [2022-01-11 07:04:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 07:04:49,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:49,976 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:49,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:04:49,976 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash -318749746, now seen corresponding path program 1 times [2022-01-11 07:04:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203838470] [2022-01-11 07:04:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:49,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-11 07:04:50,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203838470] [2022-01-11 07:04:50,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203838470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:50,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:50,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:04:50,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065840024] [2022-01-11 07:04:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:50,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:04:50,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:04:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:04:50,049 INFO L87 Difference]: Start difference. First operand 3674 states and 5731 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:50,254 INFO L93 Difference]: Finished difference Result 4712 states and 6905 transitions. [2022-01-11 07:04:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:04:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-11 07:04:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:50,261 INFO L225 Difference]: With dead ends: 4712 [2022-01-11 07:04:50,261 INFO L226 Difference]: Without dead ends: 2785 [2022-01-11 07:04:50,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:04:50,266 INFO L933 BasicCegarLoop]: 4148 mSDtfsCounter, 427 mSDsluCounter, 12139 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 16287 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:50,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 16287 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-01-11 07:04:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2737. [2022-01-11 07:04:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2735 states have (on average 1.6939670932358317) internal successors, (4633), 2736 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4633 transitions. [2022-01-11 07:04:50,356 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4633 transitions. Word has length 105 [2022-01-11 07:04:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:50,356 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 4633 transitions. [2022-01-11 07:04:50,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4633 transitions. [2022-01-11 07:04:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 07:04:50,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:50,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:50,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:04:50,358 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 306693132, now seen corresponding path program 1 times [2022-01-11 07:04:50,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949735027] [2022-01-11 07:04:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:50,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 07:04:50,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:50,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949735027] [2022-01-11 07:04:50,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949735027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:50,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:50,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 07:04:50,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24401349] [2022-01-11 07:04:50,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:50,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 07:04:50,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 07:04:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 07:04:50,491 INFO L87 Difference]: Start difference. First operand 2737 states and 4633 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:04:50,659 INFO L93 Difference]: Finished difference Result 2741 states and 4637 transitions. [2022-01-11 07:04:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 07:04:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 105 [2022-01-11 07:04:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:04:50,664 INFO L225 Difference]: With dead ends: 2741 [2022-01-11 07:04:50,664 INFO L226 Difference]: Without dead ends: 2123 [2022-01-11 07:04:50,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 07:04:50,667 INFO L933 BasicCegarLoop]: 4204 mSDtfsCounter, 4157 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 8405 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:04:50,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4157 Valid, 8405 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:04:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-01-11 07:04:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-01-11 07:04:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-01-11 07:04:50,702 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 105 [2022-01-11 07:04:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:04:50,703 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-01-11 07:04:50,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:04:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-01-11 07:04:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2022-01-11 07:04:50,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:04:50,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:04:50,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:04:50,774 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:04:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:04:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1144969737, now seen corresponding path program 1 times [2022-01-11 07:04:50,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:04:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963290335] [2022-01-11 07:04:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:04:50,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:04:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:04:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:04:53,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:04:53,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963290335] [2022-01-11 07:04:53,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963290335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:04:53,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:04:53,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:04:53,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967886958] [2022-01-11 07:04:53,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:04:53,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:04:53,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:04:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:04:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:04:53,166 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:01,002 INFO L93 Difference]: Finished difference Result 6058 states and 11375 transitions. [2022-01-11 07:05:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 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 1686 [2022-01-11 07:05:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:01,015 INFO L225 Difference]: With dead ends: 6058 [2022-01-11 07:05:01,015 INFO L226 Difference]: Without dead ends: 3938 [2022-01-11 07:05:01,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:01,020 INFO L933 BasicCegarLoop]: 1262 mSDtfsCounter, 581 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 2591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2591 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:01,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 1416 Invalid, 7542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2591 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-11 07:05:01,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-01-11 07:05:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3922. [2022-01-11 07:05:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3921 states have (on average 1.7309359857179292) internal successors, (6787), 3921 states have internal predecessors, (6787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6787 transitions. [2022-01-11 07:05:01,082 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6787 transitions. Word has length 1686 [2022-01-11 07:05:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:01,085 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6787 transitions. [2022-01-11 07:05:01,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 562.0) internal successors, (1686), 2 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6787 transitions. [2022-01-11 07:05:01,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2022-01-11 07:05:01,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:01,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:01,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:05:01,143 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash 926818827, now seen corresponding path program 1 times [2022-01-11 07:05:01,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927399549] [2022-01-11 07:05:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:01,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:01,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927399549] [2022-01-11 07:05:01,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927399549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:01,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:01,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:01,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542300866] [2022-01-11 07:05:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:01,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:01,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:01,996 INFO L87 Difference]: Start difference. First operand 3922 states and 6787 transitions. Second operand has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 2 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:08,863 INFO L93 Difference]: Finished difference Result 11252 states and 19642 transitions. [2022-01-11 07:05:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 2 states have internal predecessors, (1697), 0 states have call successors, (0), 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 1697 [2022-01-11 07:05:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:08,882 INFO L225 Difference]: With dead ends: 11252 [2022-01-11 07:05:08,882 INFO L226 Difference]: Without dead ends: 7333 [2022-01-11 07:05:08,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:08,890 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 3188 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 2134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 6907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2134 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:08,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3188 Valid, 1179 Invalid, 6907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2134 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-11 07:05:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7333 states. [2022-01-11 07:05:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7333 to 7333. [2022-01-11 07:05:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7333 states, 7332 states have (on average 1.6518003273322421) internal successors, (12111), 7332 states have internal predecessors, (12111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7333 states to 7333 states and 12111 transitions. [2022-01-11 07:05:09,007 INFO L78 Accepts]: Start accepts. Automaton has 7333 states and 12111 transitions. Word has length 1697 [2022-01-11 07:05:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:09,007 INFO L470 AbstractCegarLoop]: Abstraction has 7333 states and 12111 transitions. [2022-01-11 07:05:09,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 565.6666666666666) internal successors, (1697), 2 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7333 states and 12111 transitions. [2022-01-11 07:05:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1776 [2022-01-11 07:05:09,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:09,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:09,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:05:09,040 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -194117969, now seen corresponding path program 1 times [2022-01-11 07:05:09,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:09,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002873128] [2022-01-11 07:05:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:09,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:09,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002873128] [2022-01-11 07:05:09,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002873128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:09,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:09,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:09,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862335903] [2022-01-11 07:05:09,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:09,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:09,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:09,960 INFO L87 Difference]: Start difference. First operand 7333 states and 12111 transitions. Second operand has 3 states, 3 states have (on average 591.6666666666666) internal successors, (1775), 2 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:16,755 INFO L93 Difference]: Finished difference Result 21480 states and 35618 transitions. [2022-01-11 07:05:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:16,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 591.6666666666666) internal successors, (1775), 2 states have internal predecessors, (1775), 0 states have call successors, (0), 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 1775 [2022-01-11 07:05:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:16,783 INFO L225 Difference]: With dead ends: 21480 [2022-01-11 07:05:16,783 INFO L226 Difference]: Without dead ends: 14150 [2022-01-11 07:05:16,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:16,795 INFO L933 BasicCegarLoop]: 1625 mSDtfsCounter, 2547 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4487 mSolverCounterSat, 2372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 6859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2372 IncrementalHoareTripleChecker+Valid, 4487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:16,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 1772 Invalid, 6859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2372 Valid, 4487 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-01-11 07:05:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2022-01-11 07:05:16,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14147. [2022-01-11 07:05:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14147 states, 14146 states have (on average 1.4807719496677505) internal successors, (20947), 14146 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14147 states to 14147 states and 20947 transitions. [2022-01-11 07:05:16,992 INFO L78 Accepts]: Start accepts. Automaton has 14147 states and 20947 transitions. Word has length 1775 [2022-01-11 07:05:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:16,993 INFO L470 AbstractCegarLoop]: Abstraction has 14147 states and 20947 transitions. [2022-01-11 07:05:16,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 591.6666666666666) internal successors, (1775), 2 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 14147 states and 20947 transitions. [2022-01-11 07:05:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1792 [2022-01-11 07:05:17,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:17,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:17,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:05:17,045 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2017801116, now seen corresponding path program 1 times [2022-01-11 07:05:17,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:17,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667910443] [2022-01-11 07:05:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:17,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:17,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:17,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667910443] [2022-01-11 07:05:17,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667910443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:17,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:17,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:17,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118943712] [2022-01-11 07:05:17,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:17,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:17,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:17,860 INFO L87 Difference]: Start difference. First operand 14147 states and 20947 transitions. Second operand has 3 states, 3 states have (on average 597.0) internal successors, (1791), 2 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)