/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:13:43,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:13:43,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:13:43,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:13:43,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:13:43,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:13:43,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:13:43,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:13:43,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:13:43,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:13:43,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:13:43,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:13:43,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:13:43,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:13:43,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:13:43,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:13:43,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:13:43,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:13:43,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:13:43,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:13:43,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:13:43,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:13:43,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:13:43,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:13:43,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:13:43,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:13:43,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:13:43,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:13:43,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:13:43,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:13:43,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:13:43,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:13:43,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:13:43,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:13:43,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:13:43,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:13:43,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:13:43,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:13:43,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:13:43,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:13:43,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:13:43,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:13:43,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:13:43,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:13:43,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:13:43,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:13:43,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:13:43,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:13:43,609 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:13:43,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:13:43,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:13:43,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:13:43,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:13:43,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:13:43,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:13:43,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:13:43,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:13:43,613 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:13:43,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:13:43,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:13:43,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:13:43,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:13:43,825 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:13:43,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.05.cil-1.c [2022-01-11 01:13:43,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be66f05de/e4d188a8940549319f5d4b9b2ac70bd2/FLAGc051774dd [2022-01-11 01:13:44,592 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:13:44,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.05.cil-1.c [2022-01-11 01:13:44,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be66f05de/e4d188a8940549319f5d4b9b2ac70bd2/FLAGc051774dd [2022-01-11 01:13:44,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be66f05de/e4d188a8940549319f5d4b9b2ac70bd2 [2022-01-11 01:13:44,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:13:44,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:13:44,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:13:44,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:13:44,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:13:44,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:13:44" (1/1) ... [2022-01-11 01:13:44,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646620ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:44, skipping insertion in model container [2022-01-11 01:13:44,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:13:44" (1/1) ... [2022-01-11 01:13:44,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:13:45,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:13:46,275 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.05.cil-1.c[381679,381692] [2022-01-11 01:13:46,293 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.05.cil-1.c[383339,383352] [2022-01-11 01:13:46,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:13:46,441 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:13:47,032 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.05.cil-1.c[381679,381692] [2022-01-11 01:13:47,035 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.05.cil-1.c[383339,383352] [2022-01-11 01:13:47,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:13:47,094 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:13:47,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47 WrapperNode [2022-01-11 01:13:47,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:13:47,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:13:47,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:13:47,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:13:47,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,475 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 51, calls inlined = 104, statements flattened = 13676 [2022-01-11 01:13:47,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:13:47,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:13:47,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:13:47,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:13:47,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:13:47,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:13:47,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:13:47,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:13:47,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (1/1) ... [2022-01-11 01:13:47,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:13:47,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:13:47,893 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 01:13:47,898 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 01:13:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:13:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:13:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:13:47,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:13:48,030 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:13:48,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:13:54,627 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:13:54,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:13:54,649 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-11 01:13:54,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:54 BoogieIcfgContainer [2022-01-11 01:13:54,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:13:54,653 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:13:54,653 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:13:54,654 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:13:54,656 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:54" (1/1) ... [2022-01-11 01:13:55,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:55 BasicIcfg [2022-01-11 01:13:55,737 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:13:55,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:13:55,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:13:55,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:13:55,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:13:44" (1/4) ... [2022-01-11 01:13:55,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6155a401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:55, skipping insertion in model container [2022-01-11 01:13:55,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:13:47" (2/4) ... [2022-01-11 01:13:55,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6155a401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:13:55, skipping insertion in model container [2022-01-11 01:13:55,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:13:54" (3/4) ... [2022-01-11 01:13:55,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6155a401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:13:55, skipping insertion in model container [2022-01-11 01:13:55,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:13:55" (4/4) ... [2022-01-11 01:13:55,742 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-1.cTransformedIcfg [2022-01-11 01:13:55,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:13:55,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:13:55,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:13:55,795 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 01:13:55,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:13:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states 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 01:13:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:55,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:55,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:55,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash -403323338, now seen corresponding path program 1 times [2022-01-11 01:13:55,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:55,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263035322] [2022-01-11 01:13:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:55,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:56,108 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 01:13:56,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:56,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263035322] [2022-01-11 01:13:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263035322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:56,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563559005] [2022-01-11 01:13:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:56,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:56,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:56,146 INFO L87 Difference]: Start difference. First operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 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 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:56,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:56,402 INFO L93 Difference]: Finished difference Result 5888 states and 10485 transitions. [2022-01-11 01:13:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:56,427 INFO L225 Difference]: With dead ends: 5888 [2022-01-11 01:13:56,427 INFO L226 Difference]: Without dead ends: 3094 [2022-01-11 01:13:56,436 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 01:13:56,439 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4766 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:56,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 5532 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-01-11 01:13:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2022-01-11 01:13:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.749190938511327) internal successors, (5405), 3091 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states 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 01:13:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5405 transitions. [2022-01-11 01:13:56,566 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5405 transitions. Word has length 88 [2022-01-11 01:13:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:56,566 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5405 transitions. [2022-01-11 01:13:56,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5405 transitions. [2022-01-11 01:13:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:56,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:56,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:56,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:13:56,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1667105878, now seen corresponding path program 1 times [2022-01-11 01:13:56,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:56,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213265340] [2022-01-11 01:13:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:56,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:56,643 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 01:13:56,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213265340] [2022-01-11 01:13:56,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213265340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:56,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:56,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:56,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469797355] [2022-01-11 01:13:56,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:56,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:56,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:56,645 INFO L87 Difference]: Start difference. First operand 3092 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:56,710 INFO L93 Difference]: Finished difference Result 4050 states and 6832 transitions. [2022-01-11 01:13:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:56,720 INFO L225 Difference]: With dead ends: 4050 [2022-01-11 01:13:56,721 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:56,724 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 01:13:56,725 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 4759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 4767 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 01:13:56,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 4767 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7466019417475729) internal successors, (5397), 3091 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states 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 01:13:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5397 transitions. [2022-01-11 01:13:56,797 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5397 transitions. Word has length 88 [2022-01-11 01:13:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:56,797 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5397 transitions. [2022-01-11 01:13:56,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5397 transitions. [2022-01-11 01:13:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:56,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:56,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:56,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:13:56,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1729789386, now seen corresponding path program 1 times [2022-01-11 01:13:56,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:56,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512610950] [2022-01-11 01:13:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:56,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:56,898 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 01:13:56,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512610950] [2022-01-11 01:13:56,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512610950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:56,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:56,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:56,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949069610] [2022-01-11 01:13:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:56,900 INFO L87 Difference]: Start difference. First operand 3092 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:56,963 INFO L93 Difference]: Finished difference Result 4049 states and 6815 transitions. [2022-01-11 01:13:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:56,973 INFO L225 Difference]: With dead ends: 4049 [2022-01-11 01:13:56,974 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:56,980 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 01:13:56,982 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 4753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 4762 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 01:13:56,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 4762 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7440129449838189) internal successors, (5389), 3091 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states 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 01:13:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5389 transitions. [2022-01-11 01:13:57,062 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5389 transitions. Word has length 88 [2022-01-11 01:13:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:57,062 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5389 transitions. [2022-01-11 01:13:57,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5389 transitions. [2022-01-11 01:13:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:57,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:57,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:57,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:13:57,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 931579990, now seen corresponding path program 1 times [2022-01-11 01:13:57,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:57,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851161918] [2022-01-11 01:13:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:57,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:57,115 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 01:13:57,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851161918] [2022-01-11 01:13:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851161918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:57,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:57,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:57,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377464114] [2022-01-11 01:13:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:57,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,117 INFO L87 Difference]: Start difference. First operand 3092 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:57,170 INFO L93 Difference]: Finished difference Result 4048 states and 6798 transitions. [2022-01-11 01:13:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:57,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:57,180 INFO L225 Difference]: With dead ends: 4048 [2022-01-11 01:13:57,180 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:57,182 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 01:13:57,183 INFO L933 BasicCegarLoop]: 4757 mSDtfsCounter, 4747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 4757 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 01:13:57,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 4757 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7414239482200646) internal successors, (5381), 3091 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states 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 01:13:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5381 transitions. [2022-01-11 01:13:57,427 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5381 transitions. Word has length 88 [2022-01-11 01:13:57,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:57,427 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5381 transitions. [2022-01-11 01:13:57,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5381 transitions. [2022-01-11 01:13:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:57,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:57,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:57,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:13:57,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -90948042, now seen corresponding path program 1 times [2022-01-11 01:13:57,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445002123] [2022-01-11 01:13:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:57,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:57,455 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 01:13:57,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:57,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445002123] [2022-01-11 01:13:57,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445002123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:57,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:57,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:57,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845835400] [2022-01-11 01:13:57,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:57,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:57,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,457 INFO L87 Difference]: Start difference. First operand 3092 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:57,509 INFO L93 Difference]: Finished difference Result 4047 states and 6781 transitions. [2022-01-11 01:13:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:57,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:57,518 INFO L225 Difference]: With dead ends: 4047 [2022-01-11 01:13:57,519 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:57,521 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 01:13:57,521 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 4741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 4752 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 01:13:57,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4741 Valid, 4752 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:57,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7388349514563106) internal successors, (5373), 3091 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states 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 01:13:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5373 transitions. [2022-01-11 01:13:57,587 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5373 transitions. Word has length 88 [2022-01-11 01:13:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:57,589 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5373 transitions. [2022-01-11 01:13:57,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5373 transitions. [2022-01-11 01:13:57,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:57,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:57,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:57,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:13:57,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -955216810, now seen corresponding path program 1 times [2022-01-11 01:13:57,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:57,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208910375] [2022-01-11 01:13:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:57,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:57,631 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 01:13:57,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208910375] [2022-01-11 01:13:57,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208910375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:57,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:57,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:57,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40857296] [2022-01-11 01:13:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:57,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:57,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,633 INFO L87 Difference]: Start difference. First operand 3092 states and 5373 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:57,684 INFO L93 Difference]: Finished difference Result 4046 states and 6764 transitions. [2022-01-11 01:13:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:57,694 INFO L225 Difference]: With dead ends: 4046 [2022-01-11 01:13:57,694 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:57,696 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 01:13:57,699 INFO L933 BasicCegarLoop]: 4747 mSDtfsCounter, 4735 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4735 SdHoareTripleChecker+Valid, 4747 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 01:13:57,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4735 Valid, 4747 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7362459546925566) internal successors, (5365), 3091 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states 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 01:13:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5365 transitions. [2022-01-11 01:13:57,773 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5365 transitions. Word has length 88 [2022-01-11 01:13:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:57,773 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5365 transitions. [2022-01-11 01:13:57,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5365 transitions. [2022-01-11 01:13:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:57,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:57,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:57,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:13:57,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:57,777 INFO L85 PathProgramCache]: Analyzing trace with hash 818018870, now seen corresponding path program 1 times [2022-01-11 01:13:57,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:57,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810703813] [2022-01-11 01:13:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:57,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:13:57,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:57,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810703813] [2022-01-11 01:13:57,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810703813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:57,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:57,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:57,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127603740] [2022-01-11 01:13:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:57,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:57,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,811 INFO L87 Difference]: Start difference. First operand 3092 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:57,880 INFO L93 Difference]: Finished difference Result 4045 states and 6747 transitions. [2022-01-11 01:13:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:57,889 INFO L225 Difference]: With dead ends: 4045 [2022-01-11 01:13:57,889 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:57,891 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 01:13:57,893 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 4659 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:57,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 4784 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.729126213592233) internal successors, (5343), 3091 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states 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 01:13:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5343 transitions. [2022-01-11 01:13:57,952 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5343 transitions. Word has length 88 [2022-01-11 01:13:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:57,954 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5343 transitions. [2022-01-11 01:13:57,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5343 transitions. [2022-01-11 01:13:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:57,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:57,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:57,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:13:57,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1840794667, now seen corresponding path program 1 times [2022-01-11 01:13:57,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026950229] [2022-01-11 01:13:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:57,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:57,995 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 01:13:57,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026950229] [2022-01-11 01:13:57,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026950229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:57,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:57,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:57,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928064918] [2022-01-11 01:13:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:57,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:57,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:57,997 INFO L87 Difference]: Start difference. First operand 3092 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:58,060 INFO L93 Difference]: Finished difference Result 4044 states and 6702 transitions. [2022-01-11 01:13:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:58,081 INFO L225 Difference]: With dead ends: 4044 [2022-01-11 01:13:58,082 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:58,083 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 01:13:58,084 INFO L933 BasicCegarLoop]: 4713 mSDtfsCounter, 4646 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:58,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4646 Valid, 4770 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7220064724919093) internal successors, (5321), 3091 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states 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 01:13:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5321 transitions. [2022-01-11 01:13:58,188 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5321 transitions. Word has length 88 [2022-01-11 01:13:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:58,189 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5321 transitions. [2022-01-11 01:13:58,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5321 transitions. [2022-01-11 01:13:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:58,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:58,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:58,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:13:58,190 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1824798604, now seen corresponding path program 1 times [2022-01-11 01:13:58,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:58,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717394248] [2022-01-11 01:13:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:58,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:58,259 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 01:13:58,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:58,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717394248] [2022-01-11 01:13:58,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717394248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:58,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:58,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:58,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166315912] [2022-01-11 01:13:58,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:58,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:58,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:58,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:58,260 INFO L87 Difference]: Start difference. First operand 3092 states and 5321 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:58,331 INFO L93 Difference]: Finished difference Result 4043 states and 6657 transitions. [2022-01-11 01:13:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:58,336 INFO L225 Difference]: With dead ends: 4043 [2022-01-11 01:13:58,337 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:58,339 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 01:13:58,341 INFO L933 BasicCegarLoop]: 4700 mSDtfsCounter, 4633 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:58,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 4756 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:58,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7148867313915857) internal successors, (5299), 3091 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5299 transitions. [2022-01-11 01:13:58,493 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5299 transitions. Word has length 88 [2022-01-11 01:13:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:58,493 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5299 transitions. [2022-01-11 01:13:58,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5299 transitions. [2022-01-11 01:13:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:58,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:58,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:58,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:13:58,496 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash 607293587, now seen corresponding path program 1 times [2022-01-11 01:13:58,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:58,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127332027] [2022-01-11 01:13:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:58,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:58,536 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 01:13:58,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:58,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127332027] [2022-01-11 01:13:58,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127332027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:58,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:58,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:58,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337093001] [2022-01-11 01:13:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:58,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:58,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:58,538 INFO L87 Difference]: Start difference. First operand 3092 states and 5299 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:58,602 INFO L93 Difference]: Finished difference Result 4042 states and 6612 transitions. [2022-01-11 01:13:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:58,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:58,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:58,607 INFO L225 Difference]: With dead ends: 4042 [2022-01-11 01:13:58,607 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:58,609 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 01:13:58,610 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 4620 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:58,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4620 Valid, 4742 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7077669902912622) internal successors, (5277), 3091 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states 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 01:13:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5277 transitions. [2022-01-11 01:13:58,667 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5277 transitions. Word has length 88 [2022-01-11 01:13:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:58,667 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5277 transitions. [2022-01-11 01:13:58,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5277 transitions. [2022-01-11 01:13:58,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:58,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:58,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:58,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:13:58,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash -453016654, now seen corresponding path program 1 times [2022-01-11 01:13:58,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:58,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504609937] [2022-01-11 01:13:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:58,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:58,699 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 01:13:58,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504609937] [2022-01-11 01:13:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504609937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:58,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:58,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:58,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159378128] [2022-01-11 01:13:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:58,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:58,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:58,700 INFO L87 Difference]: Start difference. First operand 3092 states and 5277 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:58,781 INFO L93 Difference]: Finished difference Result 4040 states and 6565 transitions. [2022-01-11 01:13:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:58,792 INFO L225 Difference]: With dead ends: 4040 [2022-01-11 01:13:58,792 INFO L226 Difference]: Without dead ends: 3092 [2022-01-11 01:13:58,794 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 01:13:58,795 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 4606 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:58,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4606 Valid, 4728 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-11 01:13:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-11 01:13:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7006472491909386) internal successors, (5255), 3091 states have internal predecessors, (5255), 0 states have call successors, (0), 0 states 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 01:13:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5255 transitions. [2022-01-11 01:13:58,855 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5255 transitions. Word has length 88 [2022-01-11 01:13:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:58,855 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5255 transitions. [2022-01-11 01:13:58,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5255 transitions. [2022-01-11 01:13:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:58,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:58,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:58,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:13:58,856 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1568074415, now seen corresponding path program 1 times [2022-01-11 01:13:58,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:58,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287135140] [2022-01-11 01:13:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:58,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:58,900 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 01:13:58,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287135140] [2022-01-11 01:13:58,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287135140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:58,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:58,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:13:58,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762817616] [2022-01-11 01:13:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:58,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:13:58,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:13:58,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:13:58,902 INFO L87 Difference]: Start difference. First operand 3092 states and 5255 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:59,078 INFO L93 Difference]: Finished difference Result 4550 states and 7228 transitions. [2022-01-11 01:13:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:13:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:59,086 INFO L225 Difference]: With dead ends: 4550 [2022-01-11 01:13:59,086 INFO L226 Difference]: Without dead ends: 3616 [2022-01-11 01:13:59,088 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 01:13:59,089 INFO L933 BasicCegarLoop]: 4735 mSDtfsCounter, 1905 mSDsluCounter, 13018 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 17753 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:59,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 17753 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:13:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-01-11 01:13:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3098. [2022-01-11 01:13:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3096 states have (on average 1.694767441860465) internal successors, (5247), 3097 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states 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 01:13:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5247 transitions. [2022-01-11 01:13:59,168 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5247 transitions. Word has length 88 [2022-01-11 01:13:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:59,168 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 5247 transitions. [2022-01-11 01:13:59,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5247 transitions. [2022-01-11 01:13:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:59,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:59,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:59,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:13:59,169 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash 801359570, now seen corresponding path program 1 times [2022-01-11 01:13:59,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472884261] [2022-01-11 01:13:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:59,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:59,196 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 01:13:59,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:59,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472884261] [2022-01-11 01:13:59,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472884261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:59,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:59,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:59,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179945667] [2022-01-11 01:13:59,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:59,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:59,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:59,198 INFO L87 Difference]: Start difference. First operand 3098 states and 5247 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:59,314 INFO L93 Difference]: Finished difference Result 4814 states and 7510 transitions. [2022-01-11 01:13:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:59,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:59,321 INFO L225 Difference]: With dead ends: 4814 [2022-01-11 01:13:59,322 INFO L226 Difference]: Without dead ends: 3890 [2022-01-11 01:13:59,324 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 01:13:59,325 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4544 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4544 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:59,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4544 Valid, 5268 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-01-11 01:13:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3884. [2022-01-11 01:13:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6146316331787738) internal successors, (6268), 3883 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states 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 01:13:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6268 transitions. [2022-01-11 01:13:59,427 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6268 transitions. Word has length 88 [2022-01-11 01:13:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:59,427 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6268 transitions. [2022-01-11 01:13:59,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6268 transitions. [2022-01-11 01:13:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:59,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:59,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:13:59,428 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1150683311, now seen corresponding path program 1 times [2022-01-11 01:13:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126416873] [2022-01-11 01:13:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:59,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:59,459 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 01:13:59,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:59,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126416873] [2022-01-11 01:13:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126416873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:59,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:59,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:59,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285247128] [2022-01-11 01:13:59,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:59,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:59,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:59,461 INFO L87 Difference]: Start difference. First operand 3884 states and 6268 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:13:59,617 INFO L93 Difference]: Finished difference Result 5625 states and 8549 transitions. [2022-01-11 01:13:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:13:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:13:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:13:59,625 INFO L225 Difference]: With dead ends: 5625 [2022-01-11 01:13:59,625 INFO L226 Difference]: Without dead ends: 3884 [2022-01-11 01:13:59,628 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 01:13:59,628 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4537 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:13:59,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4537 Valid, 4704 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:13:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-01-11 01:13:59,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2022-01-11 01:13:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6076764554353427) internal successors, (6241), 3883 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states 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 01:13:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6241 transitions. [2022-01-11 01:13:59,763 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6241 transitions. Word has length 88 [2022-01-11 01:13:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:13:59,763 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6241 transitions. [2022-01-11 01:13:59,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:13:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6241 transitions. [2022-01-11 01:13:59,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 01:13:59,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:13:59,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:13:59,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:13:59,765 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:13:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:13:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash 202626386, now seen corresponding path program 1 times [2022-01-11 01:13:59,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:13:59,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203986444] [2022-01-11 01:13:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:13:59,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:13:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:13:59,798 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 01:13:59,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:13:59,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203986444] [2022-01-11 01:13:59,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203986444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:13:59,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:13:59,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:13:59,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761812051] [2022-01-11 01:13:59,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:13:59,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:13:59,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:13:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:13:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:13:59,800 INFO L87 Difference]: Start difference. First operand 3884 states and 6241 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:00,012 INFO L93 Difference]: Finished difference Result 7264 states and 10627 transitions. [2022-01-11 01:14:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 01:14:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:00,023 INFO L225 Difference]: With dead ends: 7264 [2022-01-11 01:14:00,023 INFO L226 Difference]: Without dead ends: 5526 [2022-01-11 01:14:00,027 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 01:14:00,028 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4553 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:00,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4553 Valid, 5243 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-01-11 01:14:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5352. [2022-01-11 01:14:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5350 states have (on average 1.5183177570093458) internal successors, (8123), 5351 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states 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 01:14:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 8123 transitions. [2022-01-11 01:14:00,231 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 8123 transitions. Word has length 88 [2022-01-11 01:14:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:00,231 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 8123 transitions. [2022-01-11 01:14:00,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:14:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 8123 transitions. [2022-01-11 01:14:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 01:14:00,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:00,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:00,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:14:00,234 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1976268602, now seen corresponding path program 1 times [2022-01-11 01:14:00,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:00,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743826064] [2022-01-11 01:14:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:00,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:00,277 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 01:14:00,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:00,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743826064] [2022-01-11 01:14:00,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743826064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:00,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:00,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:00,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703964381] [2022-01-11 01:14:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:00,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:00,280 INFO L87 Difference]: Start difference. First operand 5352 states and 8123 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:14:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:00,622 INFO L93 Difference]: Finished difference Result 11565 states and 16153 transitions. [2022-01-11 01:14:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 01:14:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:00,638 INFO L225 Difference]: With dead ends: 11565 [2022-01-11 01:14:00,638 INFO L226 Difference]: Without dead ends: 8365 [2022-01-11 01:14:00,644 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 01:14:00,645 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 4565 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 5240 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:00,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4565 Valid, 5240 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2022-01-11 01:14:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8079. [2022-01-11 01:14:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 8077 states have (on average 1.4387767735545376) internal successors, (11621), 8078 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states 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 01:14:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11621 transitions. [2022-01-11 01:14:01,030 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11621 transitions. Word has length 142 [2022-01-11 01:14:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:01,030 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 11621 transitions. [2022-01-11 01:14:01,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:14:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11621 transitions. [2022-01-11 01:14:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 01:14:01,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:01,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:01,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:14:01,034 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2088036486, now seen corresponding path program 1 times [2022-01-11 01:14:01,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:01,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029506699] [2022-01-11 01:14:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:01,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:01,094 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 01:14:01,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:01,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029506699] [2022-01-11 01:14:01,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029506699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:01,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:01,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:01,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289340094] [2022-01-11 01:14:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:01,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:01,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:01,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:01,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:01,095 INFO L87 Difference]: Start difference. First operand 8079 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:14:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:01,643 INFO L93 Difference]: Finished difference Result 19305 states and 25921 transitions. [2022-01-11 01:14:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 01:14:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:01,668 INFO L225 Difference]: With dead ends: 19305 [2022-01-11 01:14:01,668 INFO L226 Difference]: Without dead ends: 13423 [2022-01-11 01:14:01,679 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 01:14:01,679 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 4446 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 5632 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 01:14:01,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 5632 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13423 states. [2022-01-11 01:14:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13423 to 13421. [2022-01-11 01:14:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13419 states have (on average 1.3624711230345032) internal successors, (18283), 13420 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states 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 01:14:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 18283 transitions. [2022-01-11 01:14:02,268 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 18283 transitions. Word has length 142 [2022-01-11 01:14:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:02,269 INFO L470 AbstractCegarLoop]: Abstraction has 13421 states and 18283 transitions. [2022-01-11 01:14:02,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:14:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 18283 transitions. [2022-01-11 01:14:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 01:14:02,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:02,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:02,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:14:02,274 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 268391513, now seen corresponding path program 1 times [2022-01-11 01:14:02,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445789847] [2022-01-11 01:14:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:02,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:02,299 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 01:14:02,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:02,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445789847] [2022-01-11 01:14:02,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445789847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:02,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:02,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:02,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065235659] [2022-01-11 01:14:02,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:02,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:02,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:02,301 INFO L87 Difference]: Start difference. First operand 13421 states and 18283 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 01:14:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:02,728 INFO L93 Difference]: Finished difference Result 24575 states and 32436 transitions. [2022-01-11 01:14:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 142 [2022-01-11 01:14:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:02,753 INFO L225 Difference]: With dead ends: 24575 [2022-01-11 01:14:02,754 INFO L226 Difference]: Without dead ends: 13351 [2022-01-11 01:14:02,769 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 01:14:02,770 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 696 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 8616 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 01:14:02,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 8616 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2022-01-11 01:14:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13351. [2022-01-11 01:14:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 13349 states have (on average 1.3633980073413738) internal successors, (18200), 13350 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states 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 01:14:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 18200 transitions. [2022-01-11 01:14:03,296 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 18200 transitions. Word has length 142 [2022-01-11 01:14:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:03,296 INFO L470 AbstractCegarLoop]: Abstraction has 13351 states and 18200 transitions. [2022-01-11 01:14:03,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 01:14:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 18200 transitions. [2022-01-11 01:14:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 01:14:03,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:03,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:03,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:14:03,301 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1631061953, now seen corresponding path program 1 times [2022-01-11 01:14:03,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:03,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600414719] [2022-01-11 01:14:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:03,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:03,335 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 01:14:03,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600414719] [2022-01-11 01:14:03,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600414719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:03,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:03,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:03,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047429211] [2022-01-11 01:14:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:03,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:03,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:03,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:03,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:03,337 INFO L87 Difference]: Start difference. First operand 13351 states and 18200 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 01:14:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:04,096 INFO L93 Difference]: Finished difference Result 34816 states and 45306 transitions. [2022-01-11 01:14:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-11 01:14:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:04,132 INFO L225 Difference]: With dead ends: 34816 [2022-01-11 01:14:04,133 INFO L226 Difference]: Without dead ends: 23662 [2022-01-11 01:14:04,145 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 01:14:04,146 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 4567 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 5498 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:04,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4567 Valid, 5498 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23662 states. [2022-01-11 01:14:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23662 to 22876. [2022-01-11 01:14:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22876 states, 22874 states have (on average 1.3150301652531258) internal successors, (30080), 22875 states have internal predecessors, (30080), 0 states have call successors, (0), 0 states 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 01:14:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22876 states to 22876 states and 30080 transitions. [2022-01-11 01:14:05,020 INFO L78 Accepts]: Start accepts. Automaton has 22876 states and 30080 transitions. Word has length 143 [2022-01-11 01:14:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:05,020 INFO L470 AbstractCegarLoop]: Abstraction has 22876 states and 30080 transitions. [2022-01-11 01:14:05,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 01:14:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22876 states and 30080 transitions. [2022-01-11 01:14:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 01:14:05,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:05,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:05,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:14:05,028 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 220748318, now seen corresponding path program 1 times [2022-01-11 01:14:05,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:05,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539750229] [2022-01-11 01:14:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:05,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:05,049 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 01:14:05,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:05,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539750229] [2022-01-11 01:14:05,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539750229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:05,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:05,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:05,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80618730] [2022-01-11 01:14:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:05,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:05,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:05,051 INFO L87 Difference]: Start difference. First operand 22876 states and 30080 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 01:14:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:05,823 INFO L93 Difference]: Finished difference Result 43520 states and 56072 transitions. [2022-01-11 01:14:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 143 [2022-01-11 01:14:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:05,860 INFO L225 Difference]: With dead ends: 43520 [2022-01-11 01:14:05,860 INFO L226 Difference]: Without dead ends: 22807 [2022-01-11 01:14:05,884 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 01:14:05,884 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 694 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 8615 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 01:14:05,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 8615 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22807 states. [2022-01-11 01:14:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22807 to 22807. [2022-01-11 01:14:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22807 states, 22805 states have (on average 1.3154571365928525) internal successors, (29999), 22806 states have internal predecessors, (29999), 0 states have call successors, (0), 0 states 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 01:14:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 29999 transitions. [2022-01-11 01:14:07,064 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 29999 transitions. Word has length 143 [2022-01-11 01:14:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:07,064 INFO L470 AbstractCegarLoop]: Abstraction has 22807 states and 29999 transitions. [2022-01-11 01:14:07,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 01:14:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 29999 transitions. [2022-01-11 01:14:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 01:14:07,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:07,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:07,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:14:07,072 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1026743091, now seen corresponding path program 1 times [2022-01-11 01:14:07,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397009809] [2022-01-11 01:14:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:07,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:07,106 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 01:14:07,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:07,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397009809] [2022-01-11 01:14:07,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397009809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:07,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:07,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:07,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487789090] [2022-01-11 01:14:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:07,108 INFO L87 Difference]: Start difference. First operand 22807 states and 29999 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 01:14:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:08,646 INFO L93 Difference]: Finished difference Result 62015 states and 79231 transitions. [2022-01-11 01:14:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-01-11 01:14:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:08,704 INFO L225 Difference]: With dead ends: 62015 [2022-01-11 01:14:08,704 INFO L226 Difference]: Without dead ends: 41405 [2022-01-11 01:14:08,720 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 01:14:08,721 INFO L933 BasicCegarLoop]: 4808 mSDtfsCounter, 4569 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:08,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5478 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41405 states. [2022-01-11 01:14:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41405 to 40283. [2022-01-11 01:14:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40283 states, 40281 states have (on average 1.2856930066284353) internal successors, (51789), 40282 states have internal predecessors, (51789), 0 states have call successors, (0), 0 states 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 01:14:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40283 states to 40283 states and 51789 transitions. [2022-01-11 01:14:10,591 INFO L78 Accepts]: Start accepts. Automaton has 40283 states and 51789 transitions. Word has length 144 [2022-01-11 01:14:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:10,591 INFO L470 AbstractCegarLoop]: Abstraction has 40283 states and 51789 transitions. [2022-01-11 01:14:10,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 01:14:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 40283 states and 51789 transitions. [2022-01-11 01:14:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 01:14:10,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:10,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:10,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:14:10,605 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -439265938, now seen corresponding path program 1 times [2022-01-11 01:14:10,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13151229] [2022-01-11 01:14:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:10,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:10,628 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 01:14:10,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:10,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13151229] [2022-01-11 01:14:10,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13151229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:10,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:10,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:10,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793528046] [2022-01-11 01:14:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:10,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:10,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:10,632 INFO L87 Difference]: Start difference. First operand 40283 states and 51789 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:14:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:12,427 INFO L93 Difference]: Finished difference Result 78328 states and 99484 transitions. [2022-01-11 01:14:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:12,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 144 [2022-01-11 01:14:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:12,553 INFO L225 Difference]: With dead ends: 78328 [2022-01-11 01:14:12,553 INFO L226 Difference]: Without dead ends: 40215 [2022-01-11 01:14:12,639 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 01:14:12,640 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 692 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 8614 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 01:14:12,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 8614 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40215 states. [2022-01-11 01:14:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40215 to 40215. [2022-01-11 01:14:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40215 states, 40213 states have (on average 1.285902568821028) internal successors, (51710), 40214 states have internal predecessors, (51710), 0 states have call successors, (0), 0 states 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 01:14:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40215 states to 40215 states and 51710 transitions. [2022-01-11 01:14:14,628 INFO L78 Accepts]: Start accepts. Automaton has 40215 states and 51710 transitions. Word has length 144 [2022-01-11 01:14:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 40215 states and 51710 transitions. [2022-01-11 01:14:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:14:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 40215 states and 51710 transitions. [2022-01-11 01:14:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 01:14:14,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:14,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:14,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:14:14,639 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:14,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1112968334, now seen corresponding path program 1 times [2022-01-11 01:14:14,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:14,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621178816] [2022-01-11 01:14:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:14,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:14,676 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 01:14:14,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:14,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621178816] [2022-01-11 01:14:14,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621178816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:14,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:14,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:14,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468743200] [2022-01-11 01:14:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:14,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:14,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:14,677 INFO L87 Difference]: Start difference. First operand 40215 states and 51710 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:14:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:17,853 INFO L93 Difference]: Finished difference Result 113710 states and 143692 transitions. [2022-01-11 01:14:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-11 01:14:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:17,975 INFO L225 Difference]: With dead ends: 113710 [2022-01-11 01:14:17,975 INFO L226 Difference]: Without dead ends: 75692 [2022-01-11 01:14:18,008 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 01:14:18,008 INFO L933 BasicCegarLoop]: 4802 mSDtfsCounter, 4569 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:18,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5470 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75692 states. [2022-01-11 01:14:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75692 to 74986. [2022-01-11 01:14:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74986 states, 74984 states have (on average 1.2663234823428997) internal successors, (94954), 74985 states have internal predecessors, (94954), 0 states have call successors, (0), 0 states 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 01:14:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74986 states to 74986 states and 94954 transitions. [2022-01-11 01:14:21,624 INFO L78 Accepts]: Start accepts. Automaton has 74986 states and 94954 transitions. Word has length 145 [2022-01-11 01:14:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:21,624 INFO L470 AbstractCegarLoop]: Abstraction has 74986 states and 94954 transitions. [2022-01-11 01:14:21,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:14:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 74986 states and 94954 transitions. [2022-01-11 01:14:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 01:14:21,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:21,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:14:21,645 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1240525647, now seen corresponding path program 1 times [2022-01-11 01:14:21,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:21,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130474492] [2022-01-11 01:14:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:21,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:21,808 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 01:14:21,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130474492] [2022-01-11 01:14:21,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130474492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:21,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:21,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:21,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227555312] [2022-01-11 01:14:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:21,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:21,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:21,810 INFO L87 Difference]: Start difference. First operand 74986 states and 94954 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 01:14:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:24,573 INFO L93 Difference]: Finished difference Result 130489 states and 164378 transitions. [2022-01-11 01:14:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2022-01-11 01:14:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:24,666 INFO L225 Difference]: With dead ends: 130489 [2022-01-11 01:14:24,666 INFO L226 Difference]: Without dead ends: 57679 [2022-01-11 01:14:24,716 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 01:14:24,716 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 690 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 8613 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 01:14:24,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 8613 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57679 states. [2022-01-11 01:14:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57679 to 57679. [2022-01-11 01:14:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57679 states, 57677 states have (on average 1.2733845380307576) internal successors, (73445), 57678 states have internal predecessors, (73445), 0 states have call successors, (0), 0 states 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 01:14:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57679 states to 57679 states and 73445 transitions. [2022-01-11 01:14:27,423 INFO L78 Accepts]: Start accepts. Automaton has 57679 states and 73445 transitions. Word has length 145 [2022-01-11 01:14:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:27,423 INFO L470 AbstractCegarLoop]: Abstraction has 57679 states and 73445 transitions. [2022-01-11 01:14:27,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 01:14:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 57679 states and 73445 transitions. [2022-01-11 01:14:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 01:14:27,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:27,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:27,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:14:27,436 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash -15203847, now seen corresponding path program 1 times [2022-01-11 01:14:27,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:27,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441492631] [2022-01-11 01:14:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:27,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:27,480 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 01:14:27,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:27,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441492631] [2022-01-11 01:14:27,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441492631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:27,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:27,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:27,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482506308] [2022-01-11 01:14:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:27,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:27,481 INFO L87 Difference]: Start difference. First operand 57679 states and 73445 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 01:14:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:31,833 INFO L93 Difference]: Finished difference Result 160133 states and 201217 transitions. [2022-01-11 01:14:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:31,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-11 01:14:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:31,999 INFO L225 Difference]: With dead ends: 160133 [2022-01-11 01:14:32,000 INFO L226 Difference]: Without dead ends: 104651 [2022-01-11 01:14:32,050 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 01:14:32,050 INFO L933 BasicCegarLoop]: 4803 mSDtfsCounter, 4568 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:14:32,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4568 Valid, 5469 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104651 states. [2022-01-11 01:14:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104651 to 103881. [2022-01-11 01:14:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103881 states, 103879 states have (on average 1.2594557128967356) internal successors, (130831), 103880 states have internal predecessors, (130831), 0 states have call successors, (0), 0 states 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 01:14:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103881 states to 103881 states and 130831 transitions. [2022-01-11 01:14:37,137 INFO L78 Accepts]: Start accepts. Automaton has 103881 states and 130831 transitions. Word has length 146 [2022-01-11 01:14:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:14:37,137 INFO L470 AbstractCegarLoop]: Abstraction has 103881 states and 130831 transitions. [2022-01-11 01:14:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 01:14:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 103881 states and 130831 transitions. [2022-01-11 01:14:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 01:14:37,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:14:37,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:37,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:14:37,162 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:14:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:14:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2118360346, now seen corresponding path program 1 times [2022-01-11 01:14:37,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:14:37,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307000531] [2022-01-11 01:14:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:14:37,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:14:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:14:37,187 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 01:14:37,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:14:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307000531] [2022-01-11 01:14:37,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307000531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:14:37,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:14:37,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:14:37,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129673042] [2022-01-11 01:14:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:14:37,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:14:37,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:14:37,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:14:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:14:37,189 INFO L87 Difference]: Start difference. First operand 103881 states and 130831 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 01:14:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:14:42,131 INFO L93 Difference]: Finished difference Result 205513 states and 257558 transitions. [2022-01-11 01:14:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:14:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 146 [2022-01-11 01:14:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:14:42,310 INFO L225 Difference]: With dead ends: 205513 [2022-01-11 01:14:42,310 INFO L226 Difference]: Without dead ends: 103815 [2022-01-11 01:14:42,378 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 01:14:42,379 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 688 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 8612 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 01:14:42,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 8612 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:14:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103815 states.