/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:41:12,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:41:12,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:41:12,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:41:12,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:41:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:41:12,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:41:12,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:41:12,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:41:12,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:41:12,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:41:12,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:41:12,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:41:12,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:41:12,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:41:12,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:41:12,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:41:12,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:41:12,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:41:12,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:41:12,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:41:12,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:41:12,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:41:12,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:41:12,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:41:12,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:41:12,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:41:12,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:41:12,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:41:12,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:41:12,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:41:12,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:41:12,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:41:12,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:41:12,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:41:12,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:41:12,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:41:12,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:41:12,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:41:12,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:41:12,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:41:12,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:41:12,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:41:12,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:41:12,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:41:12,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:41:12,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:41:12,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:41:12,430 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:41:12,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:41:12,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:41:12,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:41:12,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:41:12,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:41:12,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:41:12,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:41:12,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:41:12,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:41:12,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:41:12,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:41:12,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:41:12,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:41:12,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:41:12,435 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:41:12,435 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:41:12,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:41:12,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:41:12,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:41:12,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:41:12,679 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:41:12,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.13.cil-1.c [2022-01-10 13:41:12,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753d33800/fe7197d6c745465ab5de83a2ed47938d/FLAGc0a745f88 [2022-01-10 13:41:13,560 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:41:13,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.13.cil-1.c [2022-01-10 13:41:13,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753d33800/fe7197d6c745465ab5de83a2ed47938d/FLAGc0a745f88 [2022-01-10 13:41:14,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753d33800/fe7197d6c745465ab5de83a2ed47938d [2022-01-10 13:41:14,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:41:14,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:41:14,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:41:14,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:41:14,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:41:14,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:41:14" (1/1) ... [2022-01-10 13:41:14,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b99b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:14, skipping insertion in model container [2022-01-10 13:41:14,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:41:14" (1/1) ... [2022-01-10 13:41:14,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:41:14,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:41:15,706 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_label45+token_ring.13.cil-1.c[380323,380336] [2022-01-10 13:41:15,733 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_label45+token_ring.13.cil-1.c[383339,383352] [2022-01-10 13:41:16,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:41:16,053 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:41:16,763 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_label45+token_ring.13.cil-1.c[380323,380336] [2022-01-10 13:41:16,768 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_label45+token_ring.13.cil-1.c[383339,383352] [2022-01-10 13:41:16,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:41:16,861 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:41:16,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16 WrapperNode [2022-01-10 13:41:16,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:41:16,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:41:16,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:41:16,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:41:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:16,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,489 INFO L137 Inliner]: procedures = 71, calls = 81, calls flagged for inlining = 76, calls inlined = 313, statements flattened = 17000 [2022-01-10 13:41:17,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:41:17,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:41:17,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:41:17,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:41:17,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:41:17,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:41:17,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:41:17,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:41:17,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (1/1) ... [2022-01-10 13:41:17,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:41:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:41:18,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:41:18,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:41:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:41:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:41:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:41:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:41:18,249 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:41:18,250 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:41:27,526 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:41:27,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:41:27,564 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 13:41:27,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:41:27 BoogieIcfgContainer [2022-01-10 13:41:27,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:41:27,570 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:41:27,570 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:41:27,571 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:41:27,574 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:41:27" (1/1) ... [2022-01-10 13:41:29,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:41:29 BasicIcfg [2022-01-10 13:41:29,631 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:41:29,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:41:29,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:41:29,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:41:29,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:41:14" (1/4) ... [2022-01-10 13:41:29,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d586a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:41:29, skipping insertion in model container [2022-01-10 13:41:29,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:41:16" (2/4) ... [2022-01-10 13:41:29,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d586a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:41:29, skipping insertion in model container [2022-01-10 13:41:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:41:27" (3/4) ... [2022-01-10 13:41:29,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d586a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:41:29, skipping insertion in model container [2022-01-10 13:41:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:41:29" (4/4) ... [2022-01-10 13:41:29,638 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.13.cil-1.cTransformedIcfg [2022-01-10 13:41:29,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:41:29,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 13:41:29,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:41:29,703 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:41:29,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 13:41:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 4216 states, 4212 states have (on average 1.691358024691358) internal successors, (7124), 4215 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:29,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:29,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:29,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 589236340, now seen corresponding path program 1 times [2022-01-10 13:41:29,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:29,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218774057] [2022-01-10 13:41:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:29,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:30,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:30,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218774057] [2022-01-10 13:41:30,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218774057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:30,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:30,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:30,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53827069] [2022-01-10 13:41:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:30,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:30,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:30,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:30,277 INFO L87 Difference]: Start difference. First operand has 4216 states, 4212 states have (on average 1.691358024691358) internal successors, (7124), 4215 states have internal predecessors, (7124), 0 states have call successors, (0), 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 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:30,552 INFO L93 Difference]: Finished difference Result 8408 states and 14207 transitions. [2022-01-10 13:41:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:30,588 INFO L225 Difference]: With dead ends: 8408 [2022-01-10 13:41:30,589 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:30,602 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 [2022-01-10 13:41:30,610 INFO L933 BasicCegarLoop]: 7015 mSDtfsCounter, 6999 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6999 SdHoareTripleChecker+Valid, 7015 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 [2022-01-10 13:41:30,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6999 Valid, 7015 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6774427020506635) internal successors, (6953), 4147 states have internal predecessors, (6953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6953 transitions. [2022-01-10 13:41:30,790 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6953 transitions. Word has length 176 [2022-01-10 13:41:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:30,791 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6953 transitions. [2022-01-10 13:41:30,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6953 transitions. [2022-01-10 13:41:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:30,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:30,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:30,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:41:30,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -171426220, now seen corresponding path program 1 times [2022-01-10 13:41:30,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:30,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942697892] [2022-01-10 13:41:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:30,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:30,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:30,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942697892] [2022-01-10 13:41:30,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942697892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:30,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:30,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:30,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538973433] [2022-01-10 13:41:30,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:30,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:30,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:30,953 INFO L87 Difference]: Start difference. First operand 4148 states and 6953 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:31,080 INFO L93 Difference]: Finished difference Result 6153 states and 9910 transitions. [2022-01-10 13:41:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:31,096 INFO L225 Difference]: With dead ends: 6153 [2022-01-10 13:41:31,096 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:31,103 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 [2022-01-10 13:41:31,104 INFO L933 BasicCegarLoop]: 6943 mSDtfsCounter, 6926 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6926 SdHoareTripleChecker+Valid, 6943 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 [2022-01-10 13:41:31,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6926 Valid, 6943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6762364294330518) internal successors, (6948), 4147 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6948 transitions. [2022-01-10 13:41:31,215 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6948 transitions. Word has length 176 [2022-01-10 13:41:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:31,216 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6948 transitions. [2022-01-10 13:41:31,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6948 transitions. [2022-01-10 13:41:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:31,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:31,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:31,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:41:31,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1882246260, now seen corresponding path program 1 times [2022-01-10 13:41:31,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613821382] [2022-01-10 13:41:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:31,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:31,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613821382] [2022-01-10 13:41:31,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613821382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:31,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:31,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485497865] [2022-01-10 13:41:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:31,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:31,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:31,339 INFO L87 Difference]: Start difference. First operand 4148 states and 6948 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:31,459 INFO L93 Difference]: Finished difference Result 6152 states and 9899 transitions. [2022-01-10 13:41:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:31,612 INFO L225 Difference]: With dead ends: 6152 [2022-01-10 13:41:31,613 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:31,617 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 [2022-01-10 13:41:31,618 INFO L933 BasicCegarLoop]: 6938 mSDtfsCounter, 6920 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6920 SdHoareTripleChecker+Valid, 6938 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 [2022-01-10 13:41:31,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6920 Valid, 6938 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6750301568154402) internal successors, (6943), 4147 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6943 transitions. [2022-01-10 13:41:31,730 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6943 transitions. Word has length 176 [2022-01-10 13:41:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:31,730 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6943 transitions. [2022-01-10 13:41:31,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6943 transitions. [2022-01-10 13:41:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:31,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:31,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:31,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:41:31,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1179650421, now seen corresponding path program 1 times [2022-01-10 13:41:31,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:31,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632386815] [2022-01-10 13:41:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:31,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:31,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632386815] [2022-01-10 13:41:31,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632386815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:31,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:31,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:31,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518590944] [2022-01-10 13:41:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:31,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:31,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:31,821 INFO L87 Difference]: Start difference. First operand 4148 states and 6943 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:31,929 INFO L93 Difference]: Finished difference Result 6151 states and 9888 transitions. [2022-01-10 13:41:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:31,945 INFO L225 Difference]: With dead ends: 6151 [2022-01-10 13:41:31,945 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:31,950 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 [2022-01-10 13:41:31,958 INFO L933 BasicCegarLoop]: 6933 mSDtfsCounter, 6914 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6914 SdHoareTripleChecker+Valid, 6933 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 [2022-01-10 13:41:31,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6914 Valid, 6933 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6738238841978288) internal successors, (6938), 4147 states have internal predecessors, (6938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6938 transitions. [2022-01-10 13:41:32,078 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6938 transitions. Word has length 176 [2022-01-10 13:41:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:32,078 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6938 transitions. [2022-01-10 13:41:32,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6938 transitions. [2022-01-10 13:41:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:32,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:32,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:32,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:41:32,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1204133781, now seen corresponding path program 1 times [2022-01-10 13:41:32,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559870093] [2022-01-10 13:41:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:32,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:32,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:32,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559870093] [2022-01-10 13:41:32,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559870093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:32,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:32,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:32,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241620323] [2022-01-10 13:41:32,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:32,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:32,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:32,171 INFO L87 Difference]: Start difference. First operand 4148 states and 6938 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:32,290 INFO L93 Difference]: Finished difference Result 6150 states and 9877 transitions. [2022-01-10 13:41:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:32,307 INFO L225 Difference]: With dead ends: 6150 [2022-01-10 13:41:32,307 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:32,312 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 [2022-01-10 13:41:32,315 INFO L933 BasicCegarLoop]: 6928 mSDtfsCounter, 6908 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6908 SdHoareTripleChecker+Valid, 6928 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 [2022-01-10 13:41:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6908 Valid, 6928 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6726176115802172) internal successors, (6933), 4147 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6933 transitions. [2022-01-10 13:41:32,436 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6933 transitions. Word has length 176 [2022-01-10 13:41:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:32,440 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6933 transitions. [2022-01-10 13:41:32,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6933 transitions. [2022-01-10 13:41:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:32,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:32,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:32,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:41:32,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash -734739083, now seen corresponding path program 1 times [2022-01-10 13:41:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:32,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390678755] [2022-01-10 13:41:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:32,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:32,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:32,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390678755] [2022-01-10 13:41:32,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390678755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:32,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:32,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:32,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986879444] [2022-01-10 13:41:32,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:32,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:32,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:32,512 INFO L87 Difference]: Start difference. First operand 4148 states and 6933 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:32,695 INFO L93 Difference]: Finished difference Result 6149 states and 9866 transitions. [2022-01-10 13:41:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:32,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:32,723 INFO L225 Difference]: With dead ends: 6149 [2022-01-10 13:41:32,724 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:32,728 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 [2022-01-10 13:41:32,730 INFO L933 BasicCegarLoop]: 6923 mSDtfsCounter, 6902 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6902 SdHoareTripleChecker+Valid, 6923 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 [2022-01-10 13:41:32,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6902 Valid, 6923 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6714113389626055) internal successors, (6928), 4147 states have internal predecessors, (6928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6928 transitions. [2022-01-10 13:41:32,840 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6928 transitions. Word has length 176 [2022-01-10 13:41:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:32,841 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6928 transitions. [2022-01-10 13:41:32,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6928 transitions. [2022-01-10 13:41:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:32,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:32,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:41:32,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1280926613, now seen corresponding path program 1 times [2022-01-10 13:41:32,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:32,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167682581] [2022-01-10 13:41:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:32,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:32,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:32,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167682581] [2022-01-10 13:41:32,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167682581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:32,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:32,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:32,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861996545] [2022-01-10 13:41:32,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:32,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:32,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:32,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:32,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:32,901 INFO L87 Difference]: Start difference. First operand 4148 states and 6928 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:33,001 INFO L93 Difference]: Finished difference Result 6148 states and 9855 transitions. [2022-01-10 13:41:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:33,011 INFO L225 Difference]: With dead ends: 6148 [2022-01-10 13:41:33,011 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:33,015 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 [2022-01-10 13:41:33,016 INFO L933 BasicCegarLoop]: 6918 mSDtfsCounter, 6896 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6896 SdHoareTripleChecker+Valid, 6918 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 [2022-01-10 13:41:33,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6896 Valid, 6918 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6702050663449939) internal successors, (6923), 4147 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6923 transitions. [2022-01-10 13:41:33,131 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6923 transitions. Word has length 176 [2022-01-10 13:41:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:33,131 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6923 transitions. [2022-01-10 13:41:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6923 transitions. [2022-01-10 13:41:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:33,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:33,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:33,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:41:33,134 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1473857814, now seen corresponding path program 1 times [2022-01-10 13:41:33,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918113217] [2022-01-10 13:41:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:33,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:33,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918113217] [2022-01-10 13:41:33,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918113217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:33,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:33,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:33,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411470956] [2022-01-10 13:41:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:33,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:33,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:33,209 INFO L87 Difference]: Start difference. First operand 4148 states and 6923 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:33,321 INFO L93 Difference]: Finished difference Result 6147 states and 9844 transitions. [2022-01-10 13:41:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:33,330 INFO L225 Difference]: With dead ends: 6147 [2022-01-10 13:41:33,330 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:33,334 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 [2022-01-10 13:41:33,335 INFO L933 BasicCegarLoop]: 6913 mSDtfsCounter, 6890 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6890 SdHoareTripleChecker+Valid, 6913 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 [2022-01-10 13:41:33,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6890 Valid, 6913 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6689987937273825) internal successors, (6918), 4147 states have internal predecessors, (6918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6918 transitions. [2022-01-10 13:41:33,465 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6918 transitions. Word has length 176 [2022-01-10 13:41:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:33,466 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6918 transitions. [2022-01-10 13:41:33,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6918 transitions. [2022-01-10 13:41:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:33,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:33,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:33,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:41:33,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1227952330, now seen corresponding path program 1 times [2022-01-10 13:41:33,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:33,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377259289] [2022-01-10 13:41:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:33,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:33,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:33,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377259289] [2022-01-10 13:41:33,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377259289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:33,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:33,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:33,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548124361] [2022-01-10 13:41:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:33,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:33,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:33,528 INFO L87 Difference]: Start difference. First operand 4148 states and 6918 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:33,677 INFO L93 Difference]: Finished difference Result 6146 states and 9833 transitions. [2022-01-10 13:41:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:33,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:33,687 INFO L225 Difference]: With dead ends: 6146 [2022-01-10 13:41:33,687 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:33,692 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 [2022-01-10 13:41:33,694 INFO L933 BasicCegarLoop]: 6908 mSDtfsCounter, 6884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6884 SdHoareTripleChecker+Valid, 6908 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 [2022-01-10 13:41:33,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6884 Valid, 6908 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:33,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6677925211097708) internal successors, (6913), 4147 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6913 transitions. [2022-01-10 13:41:33,885 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6913 transitions. Word has length 176 [2022-01-10 13:41:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:33,885 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6913 transitions. [2022-01-10 13:41:33,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6913 transitions. [2022-01-10 13:41:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:33,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:33,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:33,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:41:33,889 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 763102486, now seen corresponding path program 1 times [2022-01-10 13:41:33,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:33,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633976167] [2022-01-10 13:41:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:33,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:33,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:33,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633976167] [2022-01-10 13:41:33,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633976167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:33,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:33,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:33,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582030011] [2022-01-10 13:41:33,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:33,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:33,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:33,957 INFO L87 Difference]: Start difference. First operand 4148 states and 6913 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:34,072 INFO L93 Difference]: Finished difference Result 6145 states and 9822 transitions. [2022-01-10 13:41:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:34,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:34,084 INFO L225 Difference]: With dead ends: 6145 [2022-01-10 13:41:34,084 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:34,090 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 [2022-01-10 13:41:34,091 INFO L933 BasicCegarLoop]: 6903 mSDtfsCounter, 6878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6878 SdHoareTripleChecker+Valid, 6903 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 [2022-01-10 13:41:34,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6878 Valid, 6903 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:34,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6665862484921592) internal successors, (6908), 4147 states have internal predecessors, (6908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6908 transitions. [2022-01-10 13:41:34,213 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6908 transitions. Word has length 176 [2022-01-10 13:41:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:34,213 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6908 transitions. [2022-01-10 13:41:34,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6908 transitions. [2022-01-10 13:41:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:34,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:34,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:34,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:41:34,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2082163914, now seen corresponding path program 1 times [2022-01-10 13:41:34,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:34,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593455229] [2022-01-10 13:41:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:34,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:34,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:34,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593455229] [2022-01-10 13:41:34,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593455229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:34,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:34,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415708210] [2022-01-10 13:41:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:34,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:34,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:34,272 INFO L87 Difference]: Start difference. First operand 4148 states and 6908 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:34,411 INFO L93 Difference]: Finished difference Result 6144 states and 9811 transitions. [2022-01-10 13:41:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:34,421 INFO L225 Difference]: With dead ends: 6144 [2022-01-10 13:41:34,422 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:34,426 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 [2022-01-10 13:41:34,426 INFO L933 BasicCegarLoop]: 6898 mSDtfsCounter, 6872 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6872 SdHoareTripleChecker+Valid, 6898 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 [2022-01-10 13:41:34,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6872 Valid, 6898 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6653799758745476) internal successors, (6903), 4147 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6903 transitions. [2022-01-10 13:41:34,546 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6903 transitions. Word has length 176 [2022-01-10 13:41:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:34,546 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6903 transitions. [2022-01-10 13:41:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6903 transitions. [2022-01-10 13:41:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:34,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:34,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:34,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:41:34,549 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1151189270, now seen corresponding path program 1 times [2022-01-10 13:41:34,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435123567] [2022-01-10 13:41:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:34,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:34,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435123567] [2022-01-10 13:41:34,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435123567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:34,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:34,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:34,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984775423] [2022-01-10 13:41:34,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:34,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:34,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:34,600 INFO L87 Difference]: Start difference. First operand 4148 states and 6903 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:34,734 INFO L93 Difference]: Finished difference Result 6143 states and 9800 transitions. [2022-01-10 13:41:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:34,744 INFO L225 Difference]: With dead ends: 6143 [2022-01-10 13:41:34,744 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:34,748 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 [2022-01-10 13:41:34,749 INFO L933 BasicCegarLoop]: 6893 mSDtfsCounter, 6866 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 6893 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 [2022-01-10 13:41:34,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6866 Valid, 6893 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6641737032569361) internal successors, (6898), 4147 states have internal predecessors, (6898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6898 transitions. [2022-01-10 13:41:34,871 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6898 transitions. Word has length 176 [2022-01-10 13:41:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:34,872 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6898 transitions. [2022-01-10 13:41:34,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:34,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6898 transitions. [2022-01-10 13:41:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:34,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:34,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:34,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:41:34,874 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:34,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1671132982, now seen corresponding path program 1 times [2022-01-10 13:41:34,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:34,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205158388] [2022-01-10 13:41:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:34,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:34,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205158388] [2022-01-10 13:41:34,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205158388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:34,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:34,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:34,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690998983] [2022-01-10 13:41:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:34,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:34,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:34,925 INFO L87 Difference]: Start difference. First operand 4148 states and 6898 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:35,091 INFO L93 Difference]: Finished difference Result 6142 states and 9789 transitions. [2022-01-10 13:41:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:35,101 INFO L225 Difference]: With dead ends: 6142 [2022-01-10 13:41:35,101 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:35,105 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 [2022-01-10 13:41:35,106 INFO L933 BasicCegarLoop]: 6888 mSDtfsCounter, 6860 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6860 SdHoareTripleChecker+Valid, 6888 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 [2022-01-10 13:41:35,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6860 Valid, 6888 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6629674306393245) internal successors, (6893), 4147 states have internal predecessors, (6893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6893 transitions. [2022-01-10 13:41:35,262 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6893 transitions. Word has length 176 [2022-01-10 13:41:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:35,262 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6893 transitions. [2022-01-10 13:41:35,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6893 transitions. [2022-01-10 13:41:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:35,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:35,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:35,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:41:35,265 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash -251757290, now seen corresponding path program 1 times [2022-01-10 13:41:35,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307944268] [2022-01-10 13:41:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:35,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:35,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307944268] [2022-01-10 13:41:35,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307944268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:35,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:35,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:35,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123196971] [2022-01-10 13:41:35,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:35,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:35,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:35,321 INFO L87 Difference]: Start difference. First operand 4148 states and 6893 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:35,500 INFO L93 Difference]: Finished difference Result 6140 states and 9776 transitions. [2022-01-10 13:41:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:35,509 INFO L225 Difference]: With dead ends: 6140 [2022-01-10 13:41:35,509 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:35,513 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 [2022-01-10 13:41:35,514 INFO L933 BasicCegarLoop]: 6851 mSDtfsCounter, 6695 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6695 SdHoareTripleChecker+Valid, 6989 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:35,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6695 Valid, 6989 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6579010856453558) internal successors, (6872), 4147 states have internal predecessors, (6872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6872 transitions. [2022-01-10 13:41:35,636 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6872 transitions. Word has length 176 [2022-01-10 13:41:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:35,636 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6872 transitions. [2022-01-10 13:41:35,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6872 transitions. [2022-01-10 13:41:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:35,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:35,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:35,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:41:35,638 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:35,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash 714387893, now seen corresponding path program 1 times [2022-01-10 13:41:35,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:35,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707545330] [2022-01-10 13:41:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:35,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:35,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:35,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707545330] [2022-01-10 13:41:35,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707545330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:35,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:35,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:35,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764325420] [2022-01-10 13:41:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:35,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:35,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:35,688 INFO L87 Difference]: Start difference. First operand 4148 states and 6872 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:35,843 INFO L93 Difference]: Finished difference Result 6139 states and 9733 transitions. [2022-01-10 13:41:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:35,852 INFO L225 Difference]: With dead ends: 6139 [2022-01-10 13:41:35,852 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:35,856 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 [2022-01-10 13:41:35,857 INFO L933 BasicCegarLoop]: 6830 mSDtfsCounter, 6674 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6674 SdHoareTripleChecker+Valid, 6967 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:35,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6674 Valid, 6967 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6528347406513872) internal successors, (6851), 4147 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6851 transitions. [2022-01-10 13:41:35,985 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6851 transitions. Word has length 176 [2022-01-10 13:41:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:35,985 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6851 transitions. [2022-01-10 13:41:35,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6851 transitions. [2022-01-10 13:41:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:35,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:35,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:35,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:41:35,987 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 552692180, now seen corresponding path program 1 times [2022-01-10 13:41:35,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879753101] [2022-01-10 13:41:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:35,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:36,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:36,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879753101] [2022-01-10 13:41:36,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879753101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:36,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:36,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:36,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106267342] [2022-01-10 13:41:36,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:36,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:36,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:36,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:36,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:36,038 INFO L87 Difference]: Start difference. First operand 4148 states and 6851 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:36,198 INFO L93 Difference]: Finished difference Result 6138 states and 9690 transitions. [2022-01-10 13:41:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:36,208 INFO L225 Difference]: With dead ends: 6138 [2022-01-10 13:41:36,208 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:36,213 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 [2022-01-10 13:41:36,213 INFO L933 BasicCegarLoop]: 6809 mSDtfsCounter, 6653 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6653 SdHoareTripleChecker+Valid, 6945 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:36,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6653 Valid, 6945 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6477683956574185) internal successors, (6830), 4147 states have internal predecessors, (6830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6830 transitions. [2022-01-10 13:41:36,381 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6830 transitions. Word has length 176 [2022-01-10 13:41:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:36,382 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6830 transitions. [2022-01-10 13:41:36,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6830 transitions. [2022-01-10 13:41:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:36,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:36,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:36,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:41:36,384 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1492286707, now seen corresponding path program 1 times [2022-01-10 13:41:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511516266] [2022-01-10 13:41:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:36,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:36,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:36,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511516266] [2022-01-10 13:41:36,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511516266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:36,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:36,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:36,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258269553] [2022-01-10 13:41:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:36,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:36,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:36,447 INFO L87 Difference]: Start difference. First operand 4148 states and 6830 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:36,644 INFO L93 Difference]: Finished difference Result 6137 states and 9647 transitions. [2022-01-10 13:41:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:36,654 INFO L225 Difference]: With dead ends: 6137 [2022-01-10 13:41:36,654 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:36,658 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 [2022-01-10 13:41:36,659 INFO L933 BasicCegarLoop]: 6788 mSDtfsCounter, 6632 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6632 SdHoareTripleChecker+Valid, 6923 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:36,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6632 Valid, 6923 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.64270205066345) internal successors, (6809), 4147 states have internal predecessors, (6809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6809 transitions. [2022-01-10 13:41:36,786 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6809 transitions. Word has length 176 [2022-01-10 13:41:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:36,787 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6809 transitions. [2022-01-10 13:41:36,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6809 transitions. [2022-01-10 13:41:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:36,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:36,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:36,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:41:36,790 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash 494619411, now seen corresponding path program 1 times [2022-01-10 13:41:36,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826799359] [2022-01-10 13:41:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:36,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:36,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:36,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826799359] [2022-01-10 13:41:36,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826799359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:36,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:36,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:36,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002470354] [2022-01-10 13:41:36,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:36,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:36,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:36,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:36,845 INFO L87 Difference]: Start difference. First operand 4148 states and 6809 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:36,989 INFO L93 Difference]: Finished difference Result 6136 states and 9604 transitions. [2022-01-10 13:41:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:37,002 INFO L225 Difference]: With dead ends: 6136 [2022-01-10 13:41:37,003 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:37,007 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 [2022-01-10 13:41:37,007 INFO L933 BasicCegarLoop]: 6767 mSDtfsCounter, 6611 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6611 SdHoareTripleChecker+Valid, 6901 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:37,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6611 Valid, 6901 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6376357056694812) internal successors, (6788), 4147 states have internal predecessors, (6788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6788 transitions. [2022-01-10 13:41:37,147 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6788 transitions. Word has length 176 [2022-01-10 13:41:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:37,147 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6788 transitions. [2022-01-10 13:41:37,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6788 transitions. [2022-01-10 13:41:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:37,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:37,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:37,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:41:37,149 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 206240946, now seen corresponding path program 1 times [2022-01-10 13:41:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:37,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326938681] [2022-01-10 13:41:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:37,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:37,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:37,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326938681] [2022-01-10 13:41:37,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326938681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:37,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:37,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:37,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349390188] [2022-01-10 13:41:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:37,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:37,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:37,204 INFO L87 Difference]: Start difference. First operand 4148 states and 6788 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:37,371 INFO L93 Difference]: Finished difference Result 6135 states and 9561 transitions. [2022-01-10 13:41:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:37,381 INFO L225 Difference]: With dead ends: 6135 [2022-01-10 13:41:37,381 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:37,385 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 [2022-01-10 13:41:37,386 INFO L933 BasicCegarLoop]: 6746 mSDtfsCounter, 6590 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6590 SdHoareTripleChecker+Valid, 6879 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:37,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6590 Valid, 6879 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6325693606755127) internal successors, (6767), 4147 states have internal predecessors, (6767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6767 transitions. [2022-01-10 13:41:37,601 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6767 transitions. Word has length 176 [2022-01-10 13:41:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:37,601 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6767 transitions. [2022-01-10 13:41:37,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6767 transitions. [2022-01-10 13:41:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:37,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:37,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:37,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:41:37,603 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash 419238353, now seen corresponding path program 1 times [2022-01-10 13:41:37,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:37,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652888106] [2022-01-10 13:41:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:37,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:37,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:37,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652888106] [2022-01-10 13:41:37,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652888106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:37,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:37,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:37,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837517896] [2022-01-10 13:41:37,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:37,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:37,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:37,652 INFO L87 Difference]: Start difference. First operand 4148 states and 6767 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:37,817 INFO L93 Difference]: Finished difference Result 6134 states and 9518 transitions. [2022-01-10 13:41:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:37,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:37,826 INFO L225 Difference]: With dead ends: 6134 [2022-01-10 13:41:37,827 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:37,831 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 [2022-01-10 13:41:37,831 INFO L933 BasicCegarLoop]: 6725 mSDtfsCounter, 6569 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6569 SdHoareTripleChecker+Valid, 6857 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:37,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6569 Valid, 6857 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.627503015681544) internal successors, (6746), 4147 states have internal predecessors, (6746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6746 transitions. [2022-01-10 13:41:37,968 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6746 transitions. Word has length 176 [2022-01-10 13:41:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:37,968 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6746 transitions. [2022-01-10 13:41:37,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6746 transitions. [2022-01-10 13:41:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:37,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:37,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:37,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:41:37,970 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1860230672, now seen corresponding path program 1 times [2022-01-10 13:41:37,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:37,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992450440] [2022-01-10 13:41:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:37,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:38,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992450440] [2022-01-10 13:41:38,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992450440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:38,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:38,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:38,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565559720] [2022-01-10 13:41:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:38,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:38,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:38,018 INFO L87 Difference]: Start difference. First operand 4148 states and 6746 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:38,189 INFO L93 Difference]: Finished difference Result 6133 states and 9475 transitions. [2022-01-10 13:41:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:38,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:38,197 INFO L225 Difference]: With dead ends: 6133 [2022-01-10 13:41:38,198 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:38,202 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 [2022-01-10 13:41:38,203 INFO L933 BasicCegarLoop]: 6704 mSDtfsCounter, 6548 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6548 SdHoareTripleChecker+Valid, 6835 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:38,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6548 Valid, 6835 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6224366706875755) internal successors, (6725), 4147 states have internal predecessors, (6725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6725 transitions. [2022-01-10 13:41:38,353 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6725 transitions. Word has length 176 [2022-01-10 13:41:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:38,354 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6725 transitions. [2022-01-10 13:41:38,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6725 transitions. [2022-01-10 13:41:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:38,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:38,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:38,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:41:38,358 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash 649037199, now seen corresponding path program 1 times [2022-01-10 13:41:38,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534630455] [2022-01-10 13:41:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:38,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:38,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:38,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534630455] [2022-01-10 13:41:38,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534630455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:38,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:38,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:38,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565510281] [2022-01-10 13:41:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:38,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:38,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:38,412 INFO L87 Difference]: Start difference. First operand 4148 states and 6725 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:38,592 INFO L93 Difference]: Finished difference Result 6132 states and 9432 transitions. [2022-01-10 13:41:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:38,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:38,599 INFO L225 Difference]: With dead ends: 6132 [2022-01-10 13:41:38,599 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:38,602 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 [2022-01-10 13:41:38,614 INFO L933 BasicCegarLoop]: 6683 mSDtfsCounter, 6527 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6527 SdHoareTripleChecker+Valid, 6813 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:38,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6527 Valid, 6813 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:38,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6173703256936067) internal successors, (6704), 4147 states have internal predecessors, (6704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6704 transitions. [2022-01-10 13:41:38,807 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6704 transitions. Word has length 176 [2022-01-10 13:41:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:38,807 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6704 transitions. [2022-01-10 13:41:38,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6704 transitions. [2022-01-10 13:41:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:38,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:38,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:38,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:41:38,809 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:38,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -456674258, now seen corresponding path program 1 times [2022-01-10 13:41:38,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:38,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982026045] [2022-01-10 13:41:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:38,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:38,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982026045] [2022-01-10 13:41:38,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982026045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:38,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:38,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:38,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45106348] [2022-01-10 13:41:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:38,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:38,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:38,865 INFO L87 Difference]: Start difference. First operand 4148 states and 6704 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:39,039 INFO L93 Difference]: Finished difference Result 6131 states and 9389 transitions. [2022-01-10 13:41:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:39,045 INFO L225 Difference]: With dead ends: 6131 [2022-01-10 13:41:39,045 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:39,048 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 [2022-01-10 13:41:39,049 INFO L933 BasicCegarLoop]: 6662 mSDtfsCounter, 6506 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6506 SdHoareTripleChecker+Valid, 6791 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6506 Valid, 6791 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6123039806996382) internal successors, (6683), 4147 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6683 transitions. [2022-01-10 13:41:39,183 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6683 transitions. Word has length 176 [2022-01-10 13:41:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:39,184 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6683 transitions. [2022-01-10 13:41:39,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6683 transitions. [2022-01-10 13:41:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:39,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:39,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:39,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:41:39,186 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1798186573, now seen corresponding path program 1 times [2022-01-10 13:41:39,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455895471] [2022-01-10 13:41:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:39,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:39,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:39,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455895471] [2022-01-10 13:41:39,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455895471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:39,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:39,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:39,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122336786] [2022-01-10 13:41:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:39,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:39,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:39,236 INFO L87 Difference]: Start difference. First operand 4148 states and 6683 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:39,403 INFO L93 Difference]: Finished difference Result 6129 states and 9344 transitions. [2022-01-10 13:41:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:39,409 INFO L225 Difference]: With dead ends: 6129 [2022-01-10 13:41:39,409 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:39,412 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 [2022-01-10 13:41:39,413 INFO L933 BasicCegarLoop]: 6641 mSDtfsCounter, 6484 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6484 SdHoareTripleChecker+Valid, 6769 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:39,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6484 Valid, 6769 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:39,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.6072376357056695) internal successors, (6662), 4147 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6662 transitions. [2022-01-10 13:41:39,566 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6662 transitions. Word has length 176 [2022-01-10 13:41:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:39,566 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6662 transitions. [2022-01-10 13:41:39,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6662 transitions. [2022-01-10 13:41:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:39,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:39,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:39,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:41:39,568 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1383962900, now seen corresponding path program 1 times [2022-01-10 13:41:39,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:39,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572037718] [2022-01-10 13:41:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:39,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:39,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:39,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572037718] [2022-01-10 13:41:39,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572037718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:39,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:39,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:39,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819375580] [2022-01-10 13:41:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:39,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:39,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:39,617 INFO L87 Difference]: Start difference. First operand 4148 states and 6662 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:39,796 INFO L93 Difference]: Finished difference Result 6128 states and 9301 transitions. [2022-01-10 13:41:39,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:39,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:39,802 INFO L225 Difference]: With dead ends: 6128 [2022-01-10 13:41:39,802 INFO L226 Difference]: Without dead ends: 4148 [2022-01-10 13:41:39,807 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 [2022-01-10 13:41:39,808 INFO L933 BasicCegarLoop]: 6620 mSDtfsCounter, 6463 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6463 SdHoareTripleChecker+Valid, 6747 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:39,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6463 Valid, 6747 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2022-01-10 13:41:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 4148. [2022-01-10 13:41:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4145 states have (on average 1.602171290711701) internal successors, (6641), 4147 states have internal predecessors, (6641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6641 transitions. [2022-01-10 13:41:39,957 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6641 transitions. Word has length 176 [2022-01-10 13:41:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:39,958 INFO L470 AbstractCegarLoop]: Abstraction has 4148 states and 6641 transitions. [2022-01-10 13:41:39,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6641 transitions. [2022-01-10 13:41:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 13:41:39,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:39,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:39,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:41:39,959 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -437120373, now seen corresponding path program 1 times [2022-01-10 13:41:39,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:39,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505435212] [2022-01-10 13:41:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:39,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:40,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:40,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505435212] [2022-01-10 13:41:40,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505435212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:40,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:40,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:40,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459181403] [2022-01-10 13:41:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:40,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:40,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:40,006 INFO L87 Difference]: Start difference. First operand 4148 states and 6641 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:40,312 INFO L93 Difference]: Finished difference Result 7949 states and 11664 transitions. [2022-01-10 13:41:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-10 13:41:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:40,322 INFO L225 Difference]: With dead ends: 7949 [2022-01-10 13:41:40,322 INFO L226 Difference]: Without dead ends: 5971 [2022-01-10 13:41:40,327 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 [2022-01-10 13:41:40,327 INFO L933 BasicCegarLoop]: 6620 mSDtfsCounter, 6522 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6522 SdHoareTripleChecker+Valid, 9041 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:40,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6522 Valid, 9041 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-01-10 13:41:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5874. [2022-01-10 13:41:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5871 states have (on average 1.5166070516096066) internal successors, (8904), 5873 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8904 transitions. [2022-01-10 13:41:40,610 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8904 transitions. Word has length 176 [2022-01-10 13:41:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:40,610 INFO L470 AbstractCegarLoop]: Abstraction has 5874 states and 8904 transitions. [2022-01-10 13:41:40,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8904 transitions. [2022-01-10 13:41:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:40,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:40,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:40,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 13:41:40,617 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash 735435583, now seen corresponding path program 1 times [2022-01-10 13:41:40,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:40,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334419908] [2022-01-10 13:41:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:40,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:40,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334419908] [2022-01-10 13:41:40,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334419908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:40,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:40,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:41:40,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422100372] [2022-01-10 13:41:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:40,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:41:40,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:41:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:41:40,709 INFO L87 Difference]: Start difference. First operand 5874 states and 8904 transitions. Second operand has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:41,301 INFO L93 Difference]: Finished difference Result 10194 states and 14649 transitions. [2022-01-10 13:41:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:41:41,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:41,311 INFO L225 Difference]: With dead ends: 10194 [2022-01-10 13:41:41,311 INFO L226 Difference]: Without dead ends: 6501 [2022-01-10 13:41:41,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:41:41,318 INFO L933 BasicCegarLoop]: 6877 mSDtfsCounter, 7522 mSDsluCounter, 14542 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7522 SdHoareTripleChecker+Valid, 21419 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:41,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7522 Valid, 21419 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2022-01-10 13:41:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 5877. [2022-01-10 13:41:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5874 states have (on average 1.5110657133129044) internal successors, (8876), 5876 states have internal predecessors, (8876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 8876 transitions. [2022-01-10 13:41:41,623 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 8876 transitions. Word has length 286 [2022-01-10 13:41:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:41,624 INFO L470 AbstractCegarLoop]: Abstraction has 5877 states and 8876 transitions. [2022-01-10 13:41:41,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 8876 transitions. [2022-01-10 13:41:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:41,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:41,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 13:41:41,631 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1662190336, now seen corresponding path program 1 times [2022-01-10 13:41:41,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:41,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572915120] [2022-01-10 13:41:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:41,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:41,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:41,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572915120] [2022-01-10 13:41:41,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572915120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:41,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:41,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:41:41,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4821654] [2022-01-10 13:41:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:41,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:41:41,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:41:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:41:41,710 INFO L87 Difference]: Start difference. First operand 5877 states and 8876 transitions. Second operand has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:42,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:42,338 INFO L93 Difference]: Finished difference Result 11614 states and 16438 transitions. [2022-01-10 13:41:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:41:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:42,353 INFO L225 Difference]: With dead ends: 11614 [2022-01-10 13:41:42,353 INFO L226 Difference]: Without dead ends: 7953 [2022-01-10 13:41:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:41:42,364 INFO L933 BasicCegarLoop]: 6690 mSDtfsCounter, 6649 mSDsluCounter, 16441 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6649 SdHoareTripleChecker+Valid, 23131 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:42,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6649 Valid, 23131 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7953 states. [2022-01-10 13:41:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7953 to 5883. [2022-01-10 13:41:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5880 states have (on average 1.5054421768707482) internal successors, (8852), 5882 states have internal predecessors, (8852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 8852 transitions. [2022-01-10 13:41:42,740 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 8852 transitions. Word has length 286 [2022-01-10 13:41:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:42,740 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 8852 transitions. [2022-01-10 13:41:42,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 8852 transitions. [2022-01-10 13:41:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:42,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:42,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:42,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 13:41:42,747 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1831389758, now seen corresponding path program 1 times [2022-01-10 13:41:42,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:42,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410361898] [2022-01-10 13:41:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:42,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:42,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:42,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410361898] [2022-01-10 13:41:42,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410361898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:42,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:42,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:42,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700149185] [2022-01-10 13:41:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:42,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:42,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:42,842 INFO L87 Difference]: Start difference. First operand 5883 states and 8852 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:43,367 INFO L93 Difference]: Finished difference Result 12875 states and 17937 transitions. [2022-01-10 13:41:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:43,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:43,380 INFO L225 Difference]: With dead ends: 12875 [2022-01-10 13:41:43,380 INFO L226 Difference]: Without dead ends: 9238 [2022-01-10 13:41:43,390 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 [2022-01-10 13:41:43,394 INFO L933 BasicCegarLoop]: 6586 mSDtfsCounter, 6309 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6309 SdHoareTripleChecker+Valid, 8977 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6309 Valid, 8977 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2022-01-10 13:41:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 9230. [2022-01-10 13:41:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 9227 states have (on average 1.4270076948087136) internal successors, (13167), 9229 states have internal predecessors, (13167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 13167 transitions. [2022-01-10 13:41:43,879 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 13167 transitions. Word has length 286 [2022-01-10 13:41:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:43,880 INFO L470 AbstractCegarLoop]: Abstraction has 9230 states and 13167 transitions. [2022-01-10 13:41:43,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 13167 transitions. [2022-01-10 13:41:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:43,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:43,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:43,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 13:41:43,889 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -317869056, now seen corresponding path program 1 times [2022-01-10 13:41:43,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:43,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70135161] [2022-01-10 13:41:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:43,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:43,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:43,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70135161] [2022-01-10 13:41:43,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70135161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:43,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:43,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:43,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91331706] [2022-01-10 13:41:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:43,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:43,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:43,982 INFO L87 Difference]: Start difference. First operand 9230 states and 13167 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:44,837 INFO L93 Difference]: Finished difference Result 22859 states and 30829 transitions. [2022-01-10 13:41:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:44,867 INFO L225 Difference]: With dead ends: 22859 [2022-01-10 13:41:44,867 INFO L226 Difference]: Without dead ends: 15770 [2022-01-10 13:41:44,880 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 [2022-01-10 13:41:44,881 INFO L933 BasicCegarLoop]: 6597 mSDtfsCounter, 6336 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 9018 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 [2022-01-10 13:41:44,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6336 Valid, 9018 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15770 states. [2022-01-10 13:41:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15770 to 15766. [2022-01-10 13:41:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15763 states have (on average 1.3730254393199264) internal successors, (21643), 15765 states have internal predecessors, (21643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21643 transitions. [2022-01-10 13:41:45,812 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21643 transitions. Word has length 286 [2022-01-10 13:41:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:45,812 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21643 transitions. [2022-01-10 13:41:45,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21643 transitions. [2022-01-10 13:41:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:45,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:45,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:45,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 13:41:45,820 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1020464895, now seen corresponding path program 1 times [2022-01-10 13:41:45,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610009534] [2022-01-10 13:41:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:45,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:45,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:45,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610009534] [2022-01-10 13:41:45,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610009534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:45,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:45,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:45,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842089995] [2022-01-10 13:41:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:45,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:45,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:45,903 INFO L87 Difference]: Start difference. First operand 15766 states and 21643 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:46,785 INFO L93 Difference]: Finished difference Result 29377 states and 39279 transitions. [2022-01-10 13:41:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:46,804 INFO L225 Difference]: With dead ends: 29377 [2022-01-10 13:41:46,804 INFO L226 Difference]: Without dead ends: 15766 [2022-01-10 13:41:46,817 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 [2022-01-10 13:41:46,818 INFO L933 BasicCegarLoop]: 6561 mSDtfsCounter, 6306 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 6685 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:46,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6306 Valid, 6685 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2022-01-10 13:41:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 15766. [2022-01-10 13:41:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15763 states have (on average 1.367823383873628) internal successors, (21561), 15765 states have internal predecessors, (21561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21561 transitions. [2022-01-10 13:41:47,699 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21561 transitions. Word has length 286 [2022-01-10 13:41:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:47,699 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21561 transitions. [2022-01-10 13:41:47,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21561 transitions. [2022-01-10 13:41:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:47,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:47,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:47,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 13:41:47,706 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1914399806, now seen corresponding path program 1 times [2022-01-10 13:41:47,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:47,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351784598] [2022-01-10 13:41:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:47,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:41:47,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351784598] [2022-01-10 13:41:47,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351784598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:47,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:47,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:41:47,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413822724] [2022-01-10 13:41:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:47,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:47,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:47,789 INFO L87 Difference]: Start difference. First operand 15766 states and 21561 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:48,836 INFO L93 Difference]: Finished difference Result 29366 states and 39104 transitions. [2022-01-10 13:41:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:48,859 INFO L225 Difference]: With dead ends: 29366 [2022-01-10 13:41:48,859 INFO L226 Difference]: Without dead ends: 15766 [2022-01-10 13:41:48,875 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 [2022-01-10 13:41:48,876 INFO L933 BasicCegarLoop]: 6541 mSDtfsCounter, 6276 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6276 SdHoareTripleChecker+Valid, 6664 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:48,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6276 Valid, 6664 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:41:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2022-01-10 13:41:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 15766. [2022-01-10 13:41:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15763 states have (on average 1.3626213284273299) internal successors, (21479), 15765 states have internal predecessors, (21479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21479 transitions. [2022-01-10 13:41:49,825 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21479 transitions. Word has length 286 [2022-01-10 13:41:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:49,825 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21479 transitions. [2022-01-10 13:41:49,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21479 transitions. [2022-01-10 13:41:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:49,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:49,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:49,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 13:41:49,831 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2088181665, now seen corresponding path program 1 times [2022-01-10 13:41:49,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:49,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976180674] [2022-01-10 13:41:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:49,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:49,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:49,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976180674] [2022-01-10 13:41:49,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976180674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:49,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:49,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:41:49,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112166686] [2022-01-10 13:41:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:49,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:49,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:49,914 INFO L87 Difference]: Start difference. First operand 15766 states and 21479 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:51,662 INFO L93 Difference]: Finished difference Result 42623 states and 56006 transitions. [2022-01-10 13:41:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:41:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:51,707 INFO L225 Difference]: With dead ends: 42623 [2022-01-10 13:41:51,708 INFO L226 Difference]: Without dead ends: 29033 [2022-01-10 13:41:51,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:51,728 INFO L933 BasicCegarLoop]: 6540 mSDtfsCounter, 6384 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6384 SdHoareTripleChecker+Valid, 8895 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:51,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6384 Valid, 8895 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29033 states. [2022-01-10 13:41:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29033 to 28297. [2022-01-10 13:41:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28297 states, 28294 states have (on average 1.3259701703541387) internal successors, (37517), 28296 states have internal predecessors, (37517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28297 states to 28297 states and 37517 transitions. [2022-01-10 13:41:53,471 INFO L78 Accepts]: Start accepts. Automaton has 28297 states and 37517 transitions. Word has length 286 [2022-01-10 13:41:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:53,472 INFO L470 AbstractCegarLoop]: Abstraction has 28297 states and 37517 transitions. [2022-01-10 13:41:53,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28297 states and 37517 transitions. [2022-01-10 13:41:53,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:53,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:53,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:53,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 13:41:53,483 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:53,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:53,484 INFO L85 PathProgramCache]: Analyzing trace with hash 735641569, now seen corresponding path program 1 times [2022-01-10 13:41:53,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:53,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749342599] [2022-01-10 13:41:53,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:53,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:53,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749342599] [2022-01-10 13:41:53,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749342599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:53,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:53,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:41:53,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871916216] [2022-01-10 13:41:53,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:53,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:41:53,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:41:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:41:53,582 INFO L87 Difference]: Start difference. First operand 28297 states and 37517 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:41:57,255 INFO L93 Difference]: Finished difference Result 78919 states and 102857 transitions. [2022-01-10 13:41:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:41:57,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 13:41:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:41:57,343 INFO L225 Difference]: With dead ends: 78919 [2022-01-10 13:41:57,343 INFO L226 Difference]: Without dead ends: 52885 [2022-01-10 13:41:57,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:41:57,377 INFO L933 BasicCegarLoop]: 6499 mSDtfsCounter, 5308 mSDsluCounter, 19109 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 25608 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:41:57,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 25608 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:41:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52885 states. [2022-01-10 13:41:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52885 to 28345. [2022-01-10 13:41:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28345 states, 28342 states have (on average 1.318043892456425) internal successors, (37356), 28344 states have internal predecessors, (37356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28345 states to 28345 states and 37356 transitions. [2022-01-10 13:41:59,646 INFO L78 Accepts]: Start accepts. Automaton has 28345 states and 37356 transitions. Word has length 286 [2022-01-10 13:41:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:41:59,647 INFO L470 AbstractCegarLoop]: Abstraction has 28345 states and 37356 transitions. [2022-01-10 13:41:59,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:41:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 28345 states and 37356 transitions. [2022-01-10 13:41:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-10 13:41:59,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:41:59,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:41:59,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 13:41:59,657 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:41:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:41:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash 544007459, now seen corresponding path program 1 times [2022-01-10 13:41:59,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:41:59,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009307274] [2022-01-10 13:41:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:41:59,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:41:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:41:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:41:59,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:41:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009307274] [2022-01-10 13:41:59,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009307274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:41:59,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:41:59,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:41:59,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678017538] [2022-01-10 13:41:59,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:41:59,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:41:59,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:41:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:41:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:41:59,786 INFO L87 Difference]: Start difference. First operand 28345 states and 37356 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:42:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:42:03,770 INFO L93 Difference]: Finished difference Result 79175 states and 101680 transitions. [2022-01-10 13:42:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:42:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-10 13:42:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:42:03,842 INFO L225 Difference]: With dead ends: 79175 [2022-01-10 13:42:03,842 INFO L226 Difference]: Without dead ends: 53123 [2022-01-10 13:42:03,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:42:03,866 INFO L933 BasicCegarLoop]: 8222 mSDtfsCounter, 6075 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6075 SdHoareTripleChecker+Valid, 10787 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 [2022-01-10 13:42:03,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6075 Valid, 10787 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:42:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53123 states.