/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_label43+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:38:03,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:38:03,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:38:03,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:38:03,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:38:03,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:38:03,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:38:03,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:38:03,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:38:03,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:38:03,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:38:03,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:38:03,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:38:03,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:38:03,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:38:03,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:38:03,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:38:03,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:38:03,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:38:03,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:38:03,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:38:03,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:38:03,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:38:03,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:38:03,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:38:03,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:38:03,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:38:03,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:38:03,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:38:03,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:38:03,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:38:03,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:38:03,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:38:03,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:38:03,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:38:03,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:38:03,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:38:03,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:38:03,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:38:03,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:38:03,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:38:03,369 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 13:38:03,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:38:03,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:38:03,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:38:03,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:38:03,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:38:03,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:38:03,393 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:38:03,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:38:03,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:38:03,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:38:03,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:38:03,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:38:03,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:38:03,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:38:03,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:38:03,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:38:03,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:38:03,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:38:03,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:38:03,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:38:03,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:38:03,584 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:38:03,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c [2022-01-10 13:38:03,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2f157ac/2447ad3c2bb84d8cb4edb9d6e4e301fc/FLAG3ebc3f749 [2022-01-10 13:38:04,274 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:38:04,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c [2022-01-10 13:38:04,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2f157ac/2447ad3c2bb84d8cb4edb9d6e4e301fc/FLAG3ebc3f749 [2022-01-10 13:38:04,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2f157ac/2447ad3c2bb84d8cb4edb9d6e4e301fc [2022-01-10 13:38:04,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:38:04,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:38:04,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:38:04,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:38:04,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:38:04,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:04" (1/1) ... [2022-01-10 13:38:04,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699462c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:04, skipping insertion in model container [2022-01-10 13:38:04,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:04" (1/1) ... [2022-01-10 13:38:04,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:38:04,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:38:05,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2022-01-10 13:38:05,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2022-01-10 13:38:05,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:38:05,983 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:38:06,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2022-01-10 13:38:06,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2022-01-10 13:38:06,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:38:06,693 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:38:06,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06 WrapperNode [2022-01-10 13:38:06,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:38:06,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:38:06,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:38:06,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:38:06,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:06,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,057 INFO L137 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 66, calls inlined = 219, statements flattened = 15521 [2022-01-10 13:38:07,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:38:07,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:38:07,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:38:07,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:38:07,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:38:07,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:38:07,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:38:07,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:38:07,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (1/1) ... [2022-01-10 13:38:07,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:38:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:38:07,627 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 13:38:07,646 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 13:38:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:38:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:38:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:38:07,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:38:07,779 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:38:07,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:38:15,419 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:38:15,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:38:15,446 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 13:38:15,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:15 BoogieIcfgContainer [2022-01-10 13:38:15,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:38:15,452 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:38:15,452 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:38:15,453 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:38:15,455 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:15" (1/1) ... [2022-01-10 13:38:16,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:38:16 BasicIcfg [2022-01-10 13:38:16,677 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:38:16,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:38:16,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:38:16,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:38:16,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:38:04" (1/4) ... [2022-01-10 13:38:16,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660a900c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:16, skipping insertion in model container [2022-01-10 13:38:16,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:06" (2/4) ... [2022-01-10 13:38:16,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660a900c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:16, skipping insertion in model container [2022-01-10 13:38:16,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:15" (3/4) ... [2022-01-10 13:38:16,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660a900c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:38:16, skipping insertion in model container [2022-01-10 13:38:16,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:38:16" (4/4) ... [2022-01-10 13:38:16,682 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-2.cTransformedIcfg [2022-01-10 13:38:16,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:38:16,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:38:16,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:38:16,726 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 13:38:16,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:38:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 3551 states, 3548 states have (on average 1.7311161217587374) internal successors, (6142), 3550 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states 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 13:38:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:16,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:16,792 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] [2022-01-10 13:38:16,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash -852740238, now seen corresponding path program 1 times [2022-01-10 13:38:16,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:16,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435231064] [2022-01-10 13:38:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:16,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:17,043 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 13:38:17,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:17,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435231064] [2022-01-10 13:38:17,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435231064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:17,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:17,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:17,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084262628] [2022-01-10 13:38:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:17,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:17,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:17,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:17,090 INFO L87 Difference]: Start difference. First operand has 3551 states, 3548 states have (on average 1.7311161217587374) internal successors, (6142), 3550 states have internal predecessors, (6142), 0 states have call successors, (0), 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 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:17,273 INFO L93 Difference]: Finished difference Result 7090 states and 12261 transitions. [2022-01-10 13:38:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:17,300 INFO L225 Difference]: With dead ends: 7090 [2022-01-10 13:38:17,300 INFO L226 Difference]: Without dead ends: 3484 [2022-01-10 13:38:17,308 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 13:38:17,311 INFO L933 BasicCegarLoop]: 6051 mSDtfsCounter, 2018 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 10073 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:17,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 10073 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2022-01-10 13:38:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3484. [2022-01-10 13:38:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3482 states have (on average 1.718265364732912) internal successors, (5983), 3483 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states 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 13:38:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5983 transitions. [2022-01-10 13:38:17,572 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5983 transitions. Word has length 143 [2022-01-10 13:38:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:17,573 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5983 transitions. [2022-01-10 13:38:17,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5983 transitions. [2022-01-10 13:38:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:17,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:17,580 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] [2022-01-10 13:38:17,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:38:17,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash 957163347, now seen corresponding path program 1 times [2022-01-10 13:38:17,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102041040] [2022-01-10 13:38:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:17,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:17,697 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 13:38:17,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102041040] [2022-01-10 13:38:17,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102041040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:17,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:17,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:17,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121429492] [2022-01-10 13:38:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:17,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:17,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:17,700 INFO L87 Difference]: Start difference. First operand 3484 states and 5983 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:17,789 INFO L93 Difference]: Finished difference Result 5975 states and 9666 transitions. [2022-01-10 13:38:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:17,803 INFO L225 Difference]: With dead ends: 5975 [2022-01-10 13:38:17,803 INFO L226 Difference]: Without dead ends: 4629 [2022-01-10 13:38:17,807 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 13:38:17,808 INFO L933 BasicCegarLoop]: 5977 mSDtfsCounter, 5848 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 7769 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 13:38:17,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5848 Valid, 7769 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2022-01-10 13:38:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4627. [2022-01-10 13:38:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.657081081081081) internal successors, (7664), 4626 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states 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 13:38:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7664 transitions. [2022-01-10 13:38:17,907 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7664 transitions. Word has length 143 [2022-01-10 13:38:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:17,909 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7664 transitions. [2022-01-10 13:38:17,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7664 transitions. [2022-01-10 13:38:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:17,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:17,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:17,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:38:17,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:17,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1072099955, now seen corresponding path program 1 times [2022-01-10 13:38:17,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:17,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908478717] [2022-01-10 13:38:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:17,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:18,014 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 13:38:18,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908478717] [2022-01-10 13:38:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908478717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:18,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:18,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:18,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764105508] [2022-01-10 13:38:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:18,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:18,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:18,028 INFO L87 Difference]: Start difference. First operand 4627 states and 7664 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:18,112 INFO L93 Difference]: Finished difference Result 7115 states and 11341 transitions. [2022-01-10 13:38:18,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:18,126 INFO L225 Difference]: With dead ends: 7115 [2022-01-10 13:38:18,126 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:18,133 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 13:38:18,135 INFO L933 BasicCegarLoop]: 5971 mSDtfsCounter, 5958 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5958 SdHoareTripleChecker+Valid, 5971 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 13:38:18,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5958 Valid, 5971 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6553513513513514) internal successors, (7656), 4626 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states 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 13:38:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7656 transitions. [2022-01-10 13:38:18,250 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7656 transitions. Word has length 143 [2022-01-10 13:38:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:18,250 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7656 transitions. [2022-01-10 13:38:18,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7656 transitions. [2022-01-10 13:38:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:18,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:18,252 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] [2022-01-10 13:38:18,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:38:18,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 521618259, now seen corresponding path program 1 times [2022-01-10 13:38:18,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:18,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876909273] [2022-01-10 13:38:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:18,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:18,336 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 13:38:18,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876909273] [2022-01-10 13:38:18,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876909273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:18,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:18,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:18,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136337661] [2022-01-10 13:38:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:18,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:18,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:18,338 INFO L87 Difference]: Start difference. First operand 4627 states and 7656 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:18,431 INFO L93 Difference]: Finished difference Result 7114 states and 11324 transitions. [2022-01-10 13:38:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:18,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:18,445 INFO L225 Difference]: With dead ends: 7114 [2022-01-10 13:38:18,445 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:18,450 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 13:38:18,455 INFO L933 BasicCegarLoop]: 5966 mSDtfsCounter, 5952 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5952 SdHoareTripleChecker+Valid, 5966 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 13:38:18,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5952 Valid, 5966 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6536216216216215) internal successors, (7648), 4626 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states 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 13:38:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7648 transitions. [2022-01-10 13:38:18,568 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7648 transitions. Word has length 143 [2022-01-10 13:38:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:18,568 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7648 transitions. [2022-01-10 13:38:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7648 transitions. [2022-01-10 13:38:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:18,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:18,570 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] [2022-01-10 13:38:18,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:38:18,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1574349197, now seen corresponding path program 1 times [2022-01-10 13:38:18,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36564325] [2022-01-10 13:38:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:18,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:18,623 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 13:38:18,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:18,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36564325] [2022-01-10 13:38:18,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36564325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:18,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:18,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:18,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388659696] [2022-01-10 13:38:18,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:18,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:18,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:18,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:18,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:18,624 INFO L87 Difference]: Start difference. First operand 4627 states and 7648 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:18,712 INFO L93 Difference]: Finished difference Result 7113 states and 11307 transitions. [2022-01-10 13:38:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:18,725 INFO L225 Difference]: With dead ends: 7113 [2022-01-10 13:38:18,726 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:18,730 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 13:38:18,730 INFO L933 BasicCegarLoop]: 5961 mSDtfsCounter, 5946 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5946 SdHoareTripleChecker+Valid, 5961 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 13:38:18,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5946 Valid, 5961 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.651891891891892) internal successors, (7640), 4626 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states 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 13:38:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7640 transitions. [2022-01-10 13:38:18,832 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7640 transitions. Word has length 143 [2022-01-10 13:38:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:18,834 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7640 transitions. [2022-01-10 13:38:18,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7640 transitions. [2022-01-10 13:38:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:18,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:18,836 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] [2022-01-10 13:38:18,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:38:18,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash -117940397, now seen corresponding path program 1 times [2022-01-10 13:38:18,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253829496] [2022-01-10 13:38:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:18,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:18,888 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 13:38:18,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253829496] [2022-01-10 13:38:18,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253829496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:18,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:18,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:18,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503144982] [2022-01-10 13:38:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:18,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:18,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:18,890 INFO L87 Difference]: Start difference. First operand 4627 states and 7640 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:18,984 INFO L93 Difference]: Finished difference Result 7112 states and 11290 transitions. [2022-01-10 13:38:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:18,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:19,006 INFO L225 Difference]: With dead ends: 7112 [2022-01-10 13:38:19,006 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:19,011 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 13:38:19,012 INFO L933 BasicCegarLoop]: 5956 mSDtfsCounter, 5940 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5940 SdHoareTripleChecker+Valid, 5956 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 13:38:19,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5940 Valid, 5956 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6501621621621623) internal successors, (7632), 4626 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states 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 13:38:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7632 transitions. [2022-01-10 13:38:19,142 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7632 transitions. Word has length 143 [2022-01-10 13:38:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:19,142 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7632 transitions. [2022-01-10 13:38:19,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7632 transitions. [2022-01-10 13:38:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:19,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:19,144 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] [2022-01-10 13:38:19,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:38:19,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1179338125, now seen corresponding path program 1 times [2022-01-10 13:38:19,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:19,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085605619] [2022-01-10 13:38:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:19,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:19,195 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 13:38:19,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:19,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085605619] [2022-01-10 13:38:19,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085605619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:19,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:19,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:19,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751254726] [2022-01-10 13:38:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:19,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:19,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:19,197 INFO L87 Difference]: Start difference. First operand 4627 states and 7632 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:19,313 INFO L93 Difference]: Finished difference Result 7111 states and 11273 transitions. [2022-01-10 13:38:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:19,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:19,323 INFO L225 Difference]: With dead ends: 7111 [2022-01-10 13:38:19,323 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:19,329 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 13:38:19,330 INFO L933 BasicCegarLoop]: 5951 mSDtfsCounter, 5934 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5934 SdHoareTripleChecker+Valid, 5951 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 13:38:19,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5934 Valid, 5951 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6484324324324324) internal successors, (7624), 4626 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states 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 13:38:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7624 transitions. [2022-01-10 13:38:19,477 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7624 transitions. Word has length 143 [2022-01-10 13:38:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:19,477 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7624 transitions. [2022-01-10 13:38:19,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7624 transitions. [2022-01-10 13:38:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:19,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:19,479 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] [2022-01-10 13:38:19,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:38:19,479 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -797934765, now seen corresponding path program 1 times [2022-01-10 13:38:19,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306830674] [2022-01-10 13:38:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:19,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:19,539 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 13:38:19,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306830674] [2022-01-10 13:38:19,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306830674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:19,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:19,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:19,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557194645] [2022-01-10 13:38:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:19,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:19,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:19,541 INFO L87 Difference]: Start difference. First operand 4627 states and 7624 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:19,780 INFO L93 Difference]: Finished difference Result 7110 states and 11256 transitions. [2022-01-10 13:38:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:19,789 INFO L225 Difference]: With dead ends: 7110 [2022-01-10 13:38:19,790 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:19,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:19,795 INFO L933 BasicCegarLoop]: 5946 mSDtfsCounter, 5928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5928 SdHoareTripleChecker+Valid, 5946 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 13:38:19,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5928 Valid, 5946 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6467027027027028) internal successors, (7616), 4626 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states 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 13:38:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7616 transitions. [2022-01-10 13:38:19,928 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7616 transitions. Word has length 143 [2022-01-10 13:38:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7616 transitions. [2022-01-10 13:38:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7616 transitions. [2022-01-10 13:38:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:19,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:19,931 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] [2022-01-10 13:38:19,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:38:19,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1154031219, now seen corresponding path program 1 times [2022-01-10 13:38:19,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:19,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144423934] [2022-01-10 13:38:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:19,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:19,972 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 13:38:19,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144423934] [2022-01-10 13:38:19,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144423934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:19,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:19,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093567653] [2022-01-10 13:38:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:19,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:19,974 INFO L87 Difference]: Start difference. First operand 4627 states and 7616 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:20,096 INFO L93 Difference]: Finished difference Result 7109 states and 11239 transitions. [2022-01-10 13:38:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:20,104 INFO L225 Difference]: With dead ends: 7109 [2022-01-10 13:38:20,104 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:20,109 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 13:38:20,109 INFO L933 BasicCegarLoop]: 5941 mSDtfsCounter, 5922 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5922 SdHoareTripleChecker+Valid, 5941 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 13:38:20,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5922 Valid, 5941 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.644972972972973) internal successors, (7608), 4626 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states 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 13:38:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7608 transitions. [2022-01-10 13:38:20,242 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7608 transitions. Word has length 143 [2022-01-10 13:38:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7608 transitions. [2022-01-10 13:38:20,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7608 transitions. [2022-01-10 13:38:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:20,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:20,246 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] [2022-01-10 13:38:20,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:38:20,247 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash 524261203, now seen corresponding path program 1 times [2022-01-10 13:38:20,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:20,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344679666] [2022-01-10 13:38:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:20,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:20,289 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 13:38:20,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:20,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344679666] [2022-01-10 13:38:20,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344679666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:20,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:20,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:20,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855915572] [2022-01-10 13:38:20,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:20,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:20,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:20,291 INFO L87 Difference]: Start difference. First operand 4627 states and 7608 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:20,410 INFO L93 Difference]: Finished difference Result 7108 states and 11222 transitions. [2022-01-10 13:38:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:20,419 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 13:38:20,419 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:20,423 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 13:38:20,424 INFO L933 BasicCegarLoop]: 5936 mSDtfsCounter, 5916 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5916 SdHoareTripleChecker+Valid, 5936 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 13:38:20,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5916 Valid, 5936 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6432432432432433) internal successors, (7600), 4626 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states 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 13:38:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7600 transitions. [2022-01-10 13:38:20,560 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7600 transitions. Word has length 143 [2022-01-10 13:38:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:20,560 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7600 transitions. [2022-01-10 13:38:20,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7600 transitions. [2022-01-10 13:38:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:20,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:20,562 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] [2022-01-10 13:38:20,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:38:20,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1851358605, now seen corresponding path program 1 times [2022-01-10 13:38:20,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:20,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466972897] [2022-01-10 13:38:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:20,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:20,608 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 13:38:20,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:20,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466972897] [2022-01-10 13:38:20,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466972897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:20,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:20,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:20,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709518861] [2022-01-10 13:38:20,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:20,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:20,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:20,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:20,610 INFO L87 Difference]: Start difference. First operand 4627 states and 7600 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:20,740 INFO L93 Difference]: Finished difference Result 7107 states and 11205 transitions. [2022-01-10 13:38:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:20,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:20,748 INFO L225 Difference]: With dead ends: 7107 [2022-01-10 13:38:20,748 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:20,753 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 13:38:20,753 INFO L933 BasicCegarLoop]: 5931 mSDtfsCounter, 5910 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5910 SdHoareTripleChecker+Valid, 5931 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 13:38:20,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5910 Valid, 5931 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6415135135135135) internal successors, (7592), 4626 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states 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 13:38:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7592 transitions. [2022-01-10 13:38:20,901 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7592 transitions. Word has length 143 [2022-01-10 13:38:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:20,901 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7592 transitions. [2022-01-10 13:38:20,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7592 transitions. [2022-01-10 13:38:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:20,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:20,902 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] [2022-01-10 13:38:20,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:38:20,903 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash -819612845, now seen corresponding path program 1 times [2022-01-10 13:38:20,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:20,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895085215] [2022-01-10 13:38:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:20,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:20,949 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 13:38:20,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:20,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895085215] [2022-01-10 13:38:20,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895085215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:20,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:20,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:20,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770392705] [2022-01-10 13:38:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:20,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:20,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:20,951 INFO L87 Difference]: Start difference. First operand 4627 states and 7592 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:21,085 INFO L93 Difference]: Finished difference Result 7106 states and 11188 transitions. [2022-01-10 13:38:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:21,093 INFO L225 Difference]: With dead ends: 7106 [2022-01-10 13:38:21,094 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:21,098 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 13:38:21,099 INFO L933 BasicCegarLoop]: 5926 mSDtfsCounter, 5904 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5904 SdHoareTripleChecker+Valid, 5926 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 13:38:21,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5904 Valid, 5926 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6397837837837839) internal successors, (7584), 4626 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states 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 13:38:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7584 transitions. [2022-01-10 13:38:21,335 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7584 transitions. Word has length 143 [2022-01-10 13:38:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:21,335 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7584 transitions. [2022-01-10 13:38:21,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7584 transitions. [2022-01-10 13:38:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:21,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:21,336 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] [2022-01-10 13:38:21,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:38:21,337 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2123163251, now seen corresponding path program 1 times [2022-01-10 13:38:21,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:21,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626953793] [2022-01-10 13:38:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:21,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:21,367 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 13:38:21,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:21,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626953793] [2022-01-10 13:38:21,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626953793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:21,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:21,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:21,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310732743] [2022-01-10 13:38:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:21,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:21,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:21,369 INFO L87 Difference]: Start difference. First operand 4627 states and 7584 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:21,490 INFO L93 Difference]: Finished difference Result 7105 states and 11171 transitions. [2022-01-10 13:38:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:21,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:21,498 INFO L225 Difference]: With dead ends: 7105 [2022-01-10 13:38:21,498 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:21,501 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 13:38:21,501 INFO L933 BasicCegarLoop]: 5895 mSDtfsCounter, 5773 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5773 SdHoareTripleChecker+Valid, 6003 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:21,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5773 Valid, 6003 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.632864864864865) internal successors, (7552), 4626 states have internal predecessors, (7552), 0 states have call successors, (0), 0 states 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 13:38:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7552 transitions. [2022-01-10 13:38:21,601 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7552 transitions. Word has length 143 [2022-01-10 13:38:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:21,601 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7552 transitions. [2022-01-10 13:38:21,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7552 transitions. [2022-01-10 13:38:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:21,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:21,602 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] [2022-01-10 13:38:21,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:38:21,603 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash 235243474, now seen corresponding path program 1 times [2022-01-10 13:38:21,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508261429] [2022-01-10 13:38:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:21,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:21,632 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 13:38:21,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:21,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508261429] [2022-01-10 13:38:21,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508261429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:21,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:21,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:21,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827755216] [2022-01-10 13:38:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:21,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:21,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:21,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:21,634 INFO L87 Difference]: Start difference. First operand 4627 states and 7552 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:21,749 INFO L93 Difference]: Finished difference Result 7104 states and 11106 transitions. [2022-01-10 13:38:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:21,756 INFO L225 Difference]: With dead ends: 7104 [2022-01-10 13:38:21,756 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:21,760 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 13:38:21,761 INFO L933 BasicCegarLoop]: 5877 mSDtfsCounter, 5755 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5755 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:21,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5755 Valid, 5984 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.625945945945946) internal successors, (7520), 4626 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states 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 13:38:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7520 transitions. [2022-01-10 13:38:21,857 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7520 transitions. Word has length 143 [2022-01-10 13:38:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:21,857 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7520 transitions. [2022-01-10 13:38:21,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7520 transitions. [2022-01-10 13:38:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:21,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:21,859 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] [2022-01-10 13:38:21,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:38:21,859 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1050265265, now seen corresponding path program 1 times [2022-01-10 13:38:21,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:21,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572813807] [2022-01-10 13:38:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:21,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:21,888 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 13:38:21,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:21,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572813807] [2022-01-10 13:38:21,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572813807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:21,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:21,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27861841] [2022-01-10 13:38:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:21,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:21,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:21,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:21,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:21,890 INFO L87 Difference]: Start difference. First operand 4627 states and 7520 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:22,001 INFO L93 Difference]: Finished difference Result 7103 states and 11041 transitions. [2022-01-10 13:38:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:22,008 INFO L225 Difference]: With dead ends: 7103 [2022-01-10 13:38:22,008 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:22,011 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 13:38:22,011 INFO L933 BasicCegarLoop]: 5859 mSDtfsCounter, 5737 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5737 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:22,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5737 Valid, 5965 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.619027027027027) internal successors, (7488), 4626 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states 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 13:38:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7488 transitions. [2022-01-10 13:38:22,112 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7488 transitions. Word has length 143 [2022-01-10 13:38:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:22,112 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7488 transitions. [2022-01-10 13:38:22,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7488 transitions. [2022-01-10 13:38:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:22,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:22,113 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] [2022-01-10 13:38:22,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:38:22,114 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 606119568, now seen corresponding path program 1 times [2022-01-10 13:38:22,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730900792] [2022-01-10 13:38:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:22,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:22,144 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 13:38:22,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730900792] [2022-01-10 13:38:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730900792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:22,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:22,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:22,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411879908] [2022-01-10 13:38:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:22,146 INFO L87 Difference]: Start difference. First operand 4627 states and 7488 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:22,259 INFO L93 Difference]: Finished difference Result 7101 states and 10974 transitions. [2022-01-10 13:38:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:22,266 INFO L225 Difference]: With dead ends: 7101 [2022-01-10 13:38:22,266 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:22,269 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 13:38:22,269 INFO L933 BasicCegarLoop]: 5841 mSDtfsCounter, 5718 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:22,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5718 Valid, 5946 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6121081081081081) internal successors, (7456), 4626 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states 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 13:38:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7456 transitions. [2022-01-10 13:38:22,438 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7456 transitions. Word has length 143 [2022-01-10 13:38:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:22,438 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7456 transitions. [2022-01-10 13:38:22,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7456 transitions. [2022-01-10 13:38:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:22,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:22,439 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] [2022-01-10 13:38:22,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:38:22,439 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:22,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1296464657, now seen corresponding path program 1 times [2022-01-10 13:38:22,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:22,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266900395] [2022-01-10 13:38:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:22,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:22,468 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 13:38:22,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266900395] [2022-01-10 13:38:22,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266900395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:22,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:22,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:22,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601164105] [2022-01-10 13:38:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:22,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:22,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:22,470 INFO L87 Difference]: Start difference. First operand 4627 states and 7456 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:22,586 INFO L93 Difference]: Finished difference Result 7100 states and 10909 transitions. [2022-01-10 13:38:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:22,594 INFO L225 Difference]: With dead ends: 7100 [2022-01-10 13:38:22,594 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:22,597 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 13:38:22,597 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 5700 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5700 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:22,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5700 Valid, 5927 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6051891891891892) internal successors, (7424), 4626 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states 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 13:38:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7424 transitions. [2022-01-10 13:38:22,706 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7424 transitions. Word has length 143 [2022-01-10 13:38:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:22,706 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7424 transitions. [2022-01-10 13:38:22,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7424 transitions. [2022-01-10 13:38:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:22,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:22,707 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] [2022-01-10 13:38:22,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:38:22,707 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -3305457, now seen corresponding path program 1 times [2022-01-10 13:38:22,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343336648] [2022-01-10 13:38:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:22,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:22,739 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 13:38:22,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:22,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343336648] [2022-01-10 13:38:22,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343336648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:22,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:22,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:22,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930109938] [2022-01-10 13:38:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:22,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:22,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:22,740 INFO L87 Difference]: Start difference. First operand 4627 states and 7424 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:22,864 INFO L93 Difference]: Finished difference Result 7099 states and 10844 transitions. [2022-01-10 13:38:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:22,872 INFO L225 Difference]: With dead ends: 7099 [2022-01-10 13:38:22,872 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:22,876 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 13:38:22,877 INFO L933 BasicCegarLoop]: 5805 mSDtfsCounter, 5682 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:22,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5682 Valid, 5908 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5982702702702702) internal successors, (7392), 4626 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states 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 13:38:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7392 transitions. [2022-01-10 13:38:22,998 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7392 transitions. Word has length 143 [2022-01-10 13:38:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7392 transitions. [2022-01-10 13:38:22,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7392 transitions. [2022-01-10 13:38:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:22,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:23,000 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] [2022-01-10 13:38:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:38:23,000 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2023501038, now seen corresponding path program 1 times [2022-01-10 13:38:23,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271440187] [2022-01-10 13:38:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:23,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:23,034 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 13:38:23,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:23,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271440187] [2022-01-10 13:38:23,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271440187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:23,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:23,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:23,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159608049] [2022-01-10 13:38:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:23,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:23,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:23,037 INFO L87 Difference]: Start difference. First operand 4627 states and 7392 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:23,166 INFO L93 Difference]: Finished difference Result 7098 states and 10779 transitions. [2022-01-10 13:38:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:23,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:23,174 INFO L225 Difference]: With dead ends: 7098 [2022-01-10 13:38:23,175 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:23,178 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 13:38:23,179 INFO L933 BasicCegarLoop]: 5787 mSDtfsCounter, 5664 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:23,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 5889 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5913513513513513) internal successors, (7360), 4626 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states 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 13:38:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7360 transitions. [2022-01-10 13:38:23,296 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7360 transitions. Word has length 143 [2022-01-10 13:38:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:23,296 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7360 transitions. [2022-01-10 13:38:23,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7360 transitions. [2022-01-10 13:38:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:23,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:23,297 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] [2022-01-10 13:38:23,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:38:23,297 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -772425907, now seen corresponding path program 1 times [2022-01-10 13:38:23,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:23,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774357683] [2022-01-10 13:38:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:23,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:23,333 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 13:38:23,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:23,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774357683] [2022-01-10 13:38:23,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774357683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:23,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:23,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:23,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908348726] [2022-01-10 13:38:23,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:23,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:23,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:23,335 INFO L87 Difference]: Start difference. First operand 4627 states and 7360 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:23,469 INFO L93 Difference]: Finished difference Result 7097 states and 10714 transitions. [2022-01-10 13:38:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:23,481 INFO L225 Difference]: With dead ends: 7097 [2022-01-10 13:38:23,481 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:23,485 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 13:38:23,485 INFO L933 BasicCegarLoop]: 5769 mSDtfsCounter, 5646 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5646 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:23,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5646 Valid, 5870 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5844324324324324) internal successors, (7328), 4626 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states 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 13:38:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7328 transitions. [2022-01-10 13:38:23,601 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7328 transitions. Word has length 143 [2022-01-10 13:38:23,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:23,601 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7328 transitions. [2022-01-10 13:38:23,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7328 transitions. [2022-01-10 13:38:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:23,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:23,602 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] [2022-01-10 13:38:23,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:38:23,602 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash 876466860, now seen corresponding path program 1 times [2022-01-10 13:38:23,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:23,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141009688] [2022-01-10 13:38:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:23,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:23,633 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 13:38:23,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:23,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141009688] [2022-01-10 13:38:23,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141009688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:23,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:23,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:23,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004721627] [2022-01-10 13:38:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:23,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:23,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:23,635 INFO L87 Difference]: Start difference. First operand 4627 states and 7328 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:23,767 INFO L93 Difference]: Finished difference Result 7096 states and 10649 transitions. [2022-01-10 13:38:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:23,774 INFO L225 Difference]: With dead ends: 7096 [2022-01-10 13:38:23,775 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:23,778 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 13:38:23,779 INFO L933 BasicCegarLoop]: 5751 mSDtfsCounter, 5628 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:23,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5628 Valid, 5851 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5775135135135134) internal successors, (7296), 4626 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states 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 13:38:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7296 transitions. [2022-01-10 13:38:23,900 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7296 transitions. Word has length 143 [2022-01-10 13:38:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7296 transitions. [2022-01-10 13:38:23,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7296 transitions. [2022-01-10 13:38:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:23,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:23,901 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] [2022-01-10 13:38:23,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:38:23,901 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:23,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1702054795, now seen corresponding path program 1 times [2022-01-10 13:38:23,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:23,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664084643] [2022-01-10 13:38:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:23,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:23,991 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 13:38:23,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:23,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664084643] [2022-01-10 13:38:23,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664084643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:23,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:23,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:23,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717831490] [2022-01-10 13:38:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:23,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:23,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:23,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:23,993 INFO L87 Difference]: Start difference. First operand 4627 states and 7296 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:24,139 INFO L93 Difference]: Finished difference Result 7095 states and 10584 transitions. [2022-01-10 13:38:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:24,146 INFO L225 Difference]: With dead ends: 7095 [2022-01-10 13:38:24,146 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:38:24,150 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 13:38:24,151 INFO L933 BasicCegarLoop]: 5733 mSDtfsCounter, 5610 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5610 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:24,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5610 Valid, 5832 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:38:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:38:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5705945945945945) internal successors, (7264), 4626 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states 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 13:38:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7264 transitions. [2022-01-10 13:38:24,277 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7264 transitions. Word has length 143 [2022-01-10 13:38:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:24,277 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7264 transitions. [2022-01-10 13:38:24,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7264 transitions. [2022-01-10 13:38:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:24,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:24,278 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] [2022-01-10 13:38:24,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:38:24,278 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:24,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1050191210, now seen corresponding path program 1 times [2022-01-10 13:38:24,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:24,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48608822] [2022-01-10 13:38:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:24,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:24,339 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 13:38:24,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:24,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48608822] [2022-01-10 13:38:24,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48608822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:24,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:24,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:38:24,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670986510] [2022-01-10 13:38:24,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:24,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:38:24,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:38:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:38:24,340 INFO L87 Difference]: Start difference. First operand 4627 states and 7264 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:24,678 INFO L93 Difference]: Finished difference Result 8035 states and 11817 transitions. [2022-01-10 13:38:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:38:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:24,686 INFO L225 Difference]: With dead ends: 8035 [2022-01-10 13:38:24,686 INFO L226 Difference]: Without dead ends: 5581 [2022-01-10 13:38:24,690 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 13:38:24,690 INFO L933 BasicCegarLoop]: 5869 mSDtfsCounter, 4965 mSDsluCounter, 13875 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 19744 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:24,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 19744 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2022-01-10 13:38:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 4633. [2022-01-10 13:38:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4631 states have (on average 1.564672856834377) internal successors, (7246), 4632 states have internal predecessors, (7246), 0 states have call successors, (0), 0 states 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 13:38:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 7246 transitions. [2022-01-10 13:38:24,858 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 7246 transitions. Word has length 143 [2022-01-10 13:38:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:24,858 INFO L470 AbstractCegarLoop]: Abstraction has 4633 states and 7246 transitions. [2022-01-10 13:38:24,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:24,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 7246 transitions. [2022-01-10 13:38:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:24,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:24,859 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] [2022-01-10 13:38:24,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:38:24,860 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:24,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:24,860 INFO L85 PathProgramCache]: Analyzing trace with hash 608436715, now seen corresponding path program 1 times [2022-01-10 13:38:24,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:24,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588225729] [2022-01-10 13:38:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:24,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:24,895 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 13:38:24,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:24,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588225729] [2022-01-10 13:38:24,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588225729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:24,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:24,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:24,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374144542] [2022-01-10 13:38:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:24,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:24,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:24,898 INFO L87 Difference]: Start difference. First operand 4633 states and 7246 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:25,179 INFO L93 Difference]: Finished difference Result 9271 states and 13313 transitions. [2022-01-10 13:38:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:25,188 INFO L225 Difference]: With dead ends: 9271 [2022-01-10 13:38:25,189 INFO L226 Difference]: Without dead ends: 6820 [2022-01-10 13:38:25,193 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 13:38:25,194 INFO L933 BasicCegarLoop]: 5721 mSDtfsCounter, 5534 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5534 SdHoareTripleChecker+Valid, 7297 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:25,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5534 Valid, 7297 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6820 states. [2022-01-10 13:38:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6820 to 6814. [2022-01-10 13:38:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6814 states, 6812 states have (on average 1.4785672342924252) internal successors, (10072), 6813 states have internal predecessors, (10072), 0 states have call successors, (0), 0 states 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 13:38:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 10072 transitions. [2022-01-10 13:38:25,448 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 10072 transitions. Word has length 143 [2022-01-10 13:38:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:25,448 INFO L470 AbstractCegarLoop]: Abstraction has 6814 states and 10072 transitions. [2022-01-10 13:38:25,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 10072 transitions. [2022-01-10 13:38:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:25,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:25,449 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] [2022-01-10 13:38:25,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:38:25,449 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1815030826, now seen corresponding path program 1 times [2022-01-10 13:38:25,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:25,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094039949] [2022-01-10 13:38:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:25,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:38:25,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:25,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094039949] [2022-01-10 13:38:25,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094039949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:25,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:25,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:38:25,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962740555] [2022-01-10 13:38:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:25,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:38:25,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:38:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:38:25,495 INFO L87 Difference]: Start difference. First operand 6814 states and 10072 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:26,104 INFO L93 Difference]: Finished difference Result 14603 states and 20315 transitions. [2022-01-10 13:38:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:38:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:26,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:26,117 INFO L225 Difference]: With dead ends: 14603 [2022-01-10 13:38:26,118 INFO L226 Difference]: Without dead ends: 9996 [2022-01-10 13:38:26,125 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 13:38:26,125 INFO L933 BasicCegarLoop]: 5759 mSDtfsCounter, 4201 mSDsluCounter, 15446 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 21205 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:26,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 21205 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2022-01-10 13:38:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 6826. [2022-01-10 13:38:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6824 states have (on average 1.4711313012895662) internal successors, (10039), 6825 states have internal predecessors, (10039), 0 states have call successors, (0), 0 states 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 13:38:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 10039 transitions. [2022-01-10 13:38:26,419 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 10039 transitions. Word has length 143 [2022-01-10 13:38:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:26,419 INFO L470 AbstractCegarLoop]: Abstraction has 6826 states and 10039 transitions. [2022-01-10 13:38:26,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 10039 transitions. [2022-01-10 13:38:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:26,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:26,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:26,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:38:26,420 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1606332523, now seen corresponding path program 1 times [2022-01-10 13:38:26,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874586392] [2022-01-10 13:38:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:26,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:26,467 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 13:38:26,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:26,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874586392] [2022-01-10 13:38:26,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874586392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:26,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:26,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:38:26,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201314743] [2022-01-10 13:38:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:26,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:38:26,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:38:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:38:26,469 INFO L87 Difference]: Start difference. First operand 6826 states and 10039 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:27,023 INFO L93 Difference]: Finished difference Result 14898 states and 20557 transitions. [2022-01-10 13:38:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:38:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:27,037 INFO L225 Difference]: With dead ends: 14898 [2022-01-10 13:38:27,037 INFO L226 Difference]: Without dead ends: 10286 [2022-01-10 13:38:27,044 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 13:38:27,045 INFO L933 BasicCegarLoop]: 5728 mSDtfsCounter, 4032 mSDsluCounter, 15727 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 21455 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:27,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4032 Valid, 21455 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2022-01-10 13:38:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 6838. [2022-01-10 13:38:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6836 states have (on average 1.4637214745465184) internal successors, (10006), 6837 states have internal predecessors, (10006), 0 states have call successors, (0), 0 states 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 13:38:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 10006 transitions. [2022-01-10 13:38:27,465 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 10006 transitions. Word has length 143 [2022-01-10 13:38:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 10006 transitions. [2022-01-10 13:38:27,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 10006 transitions. [2022-01-10 13:38:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:27,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:27,466 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] [2022-01-10 13:38:27,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 13:38:27,467 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2058176148, now seen corresponding path program 1 times [2022-01-10 13:38:27,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:27,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381764966] [2022-01-10 13:38:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:27,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:27,508 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 13:38:27,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:27,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381764966] [2022-01-10 13:38:27,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381764966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:27,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:27,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:27,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799433629] [2022-01-10 13:38:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:27,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:27,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:27,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:27,510 INFO L87 Difference]: Start difference. First operand 6838 states and 10006 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:27,812 INFO L93 Difference]: Finished difference Result 11524 states and 16012 transitions. [2022-01-10 13:38:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:27,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:27,821 INFO L225 Difference]: With dead ends: 11524 [2022-01-10 13:38:27,821 INFO L226 Difference]: Without dead ends: 6838 [2022-01-10 13:38:27,827 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 13:38:27,827 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5473 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 5770 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5473 Valid, 5770 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2022-01-10 13:38:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6838. [2022-01-10 13:38:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6836 states have (on average 1.458308952603862) internal successors, (9969), 6837 states have internal predecessors, (9969), 0 states have call successors, (0), 0 states 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 13:38:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9969 transitions. [2022-01-10 13:38:28,132 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9969 transitions. Word has length 143 [2022-01-10 13:38:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:28,133 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 9969 transitions. [2022-01-10 13:38:28,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9969 transitions. [2022-01-10 13:38:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:38:28,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:28,134 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] [2022-01-10 13:38:28,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 13:38:28,134 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -813411667, now seen corresponding path program 1 times [2022-01-10 13:38:28,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:28,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674210500] [2022-01-10 13:38:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:28,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:28,174 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 13:38:28,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674210500] [2022-01-10 13:38:28,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674210500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:28,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:28,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:38:28,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097852484] [2022-01-10 13:38:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:28,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:28,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:28,176 INFO L87 Difference]: Start difference. First operand 6838 states and 9969 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:28,919 INFO L93 Difference]: Finished difference Result 16031 states and 21700 transitions. [2022-01-10 13:38:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:28,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:38:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:28,932 INFO L225 Difference]: With dead ends: 16031 [2022-01-10 13:38:28,932 INFO L226 Difference]: Without dead ends: 11354 [2022-01-10 13:38:28,937 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 13:38:28,938 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5516 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:28,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5516 Valid, 7212 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2022-01-10 13:38:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 11040. [2022-01-10 13:38:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11040 states, 11038 states have (on average 1.3856676934227214) internal successors, (15295), 11039 states have internal predecessors, (15295), 0 states have call successors, (0), 0 states 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 13:38:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 15295 transitions. [2022-01-10 13:38:29,484 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 15295 transitions. Word has length 143 [2022-01-10 13:38:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:29,484 INFO L470 AbstractCegarLoop]: Abstraction has 11040 states and 15295 transitions. [2022-01-10 13:38:29,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:38:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 15295 transitions. [2022-01-10 13:38:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:38:29,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:29,489 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] [2022-01-10 13:38:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 13:38:29,490 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1520714266, now seen corresponding path program 1 times [2022-01-10 13:38:29,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:29,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86498898] [2022-01-10 13:38:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:29,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:29,538 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 13:38:29,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:29,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86498898] [2022-01-10 13:38:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86498898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:29,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:29,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:29,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289275139] [2022-01-10 13:38:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:29,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:29,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:29,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:29,539 INFO L87 Difference]: Start difference. First operand 11040 states and 15295 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:30,672 INFO L93 Difference]: Finished difference Result 28514 states and 37538 transitions. [2022-01-10 13:38:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:38:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:30,698 INFO L225 Difference]: With dead ends: 28514 [2022-01-10 13:38:30,698 INFO L226 Difference]: Without dead ends: 19641 [2022-01-10 13:38:30,710 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 13:38:30,710 INFO L933 BasicCegarLoop]: 5672 mSDtfsCounter, 5543 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 7209 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:30,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5543 Valid, 7209 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19641 states. [2022-01-10 13:38:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19641 to 19075. [2022-01-10 13:38:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19075 states, 19073 states have (on average 1.3353431552456352) internal successors, (25469), 19074 states have internal predecessors, (25469), 0 states have call successors, (0), 0 states 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 13:38:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19075 states to 19075 states and 25469 transitions. [2022-01-10 13:38:31,848 INFO L78 Accepts]: Start accepts. Automaton has 19075 states and 25469 transitions. Word has length 232 [2022-01-10 13:38:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:31,848 INFO L470 AbstractCegarLoop]: Abstraction has 19075 states and 25469 transitions. [2022-01-10 13:38:31,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 19075 states and 25469 transitions. [2022-01-10 13:38:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:38:31,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:31,857 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] [2022-01-10 13:38:31,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 13:38:31,857 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash -812729894, now seen corresponding path program 1 times [2022-01-10 13:38:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715894131] [2022-01-10 13:38:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:31,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:31,926 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 13:38:31,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:31,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715894131] [2022-01-10 13:38:31,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715894131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:31,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:31,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:38:31,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401165967] [2022-01-10 13:38:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:31,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:38:31,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:38:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:38:31,927 INFO L87 Difference]: Start difference. First operand 19075 states and 25469 transitions. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:34,099 INFO L93 Difference]: Finished difference Result 51589 states and 67040 transitions. [2022-01-10 13:38:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:38:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:38:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:34,149 INFO L225 Difference]: With dead ends: 51589 [2022-01-10 13:38:34,149 INFO L226 Difference]: Without dead ends: 34747 [2022-01-10 13:38:34,170 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 13:38:34,171 INFO L933 BasicCegarLoop]: 5640 mSDtfsCounter, 3536 mSDsluCounter, 16590 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 22230 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:34,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3536 Valid, 22230 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:38:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34747 states. [2022-01-10 13:38:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34747 to 19123. [2022-01-10 13:38:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19123 states, 19121 states have (on average 1.3260812719000052) internal successors, (25356), 19122 states have internal predecessors, (25356), 0 states have call successors, (0), 0 states 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 13:38:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19123 states to 19123 states and 25356 transitions. [2022-01-10 13:38:35,492 INFO L78 Accepts]: Start accepts. Automaton has 19123 states and 25356 transitions. Word has length 232 [2022-01-10 13:38:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:35,493 INFO L470 AbstractCegarLoop]: Abstraction has 19123 states and 25356 transitions. [2022-01-10 13:38:35,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19123 states and 25356 transitions. [2022-01-10 13:38:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:38:35,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:35,502 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] [2022-01-10 13:38:35,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 13:38:35,502 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1074095912, now seen corresponding path program 1 times [2022-01-10 13:38:35,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:35,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480038312] [2022-01-10 13:38:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:35,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:35,572 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 13:38:35,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:35,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480038312] [2022-01-10 13:38:35,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480038312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:35,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:35,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:35,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802287911] [2022-01-10 13:38:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:35,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:35,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:35,574 INFO L87 Difference]: Start difference. First operand 19123 states and 25356 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:38,044 INFO L93 Difference]: Finished difference Result 51857 states and 66239 transitions. [2022-01-10 13:38:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:38:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:38,093 INFO L225 Difference]: With dead ends: 51857 [2022-01-10 13:38:38,093 INFO L226 Difference]: Without dead ends: 34991 [2022-01-10 13:38:38,112 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 13:38:38,112 INFO L933 BasicCegarLoop]: 6681 mSDtfsCounter, 5304 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 8378 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 13:38:38,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 8378 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34991 states. [2022-01-10 13:38:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34991 to 34989. [2022-01-10 13:38:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34989 states, 34987 states have (on average 1.2843913453568467) internal successors, (44937), 34988 states have internal predecessors, (44937), 0 states have call successors, (0), 0 states 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 13:38:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34989 states to 34989 states and 44937 transitions. [2022-01-10 13:38:40,638 INFO L78 Accepts]: Start accepts. Automaton has 34989 states and 44937 transitions. Word has length 232 [2022-01-10 13:38:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:40,639 INFO L470 AbstractCegarLoop]: Abstraction has 34989 states and 44937 transitions. [2022-01-10 13:38:40,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 13:38:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 34989 states and 44937 transitions. [2022-01-10 13:38:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:38:40,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:40,654 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] [2022-01-10 13:38:40,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 13:38:40,654 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -628558601, now seen corresponding path program 1 times [2022-01-10 13:38:40,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326104955] [2022-01-10 13:38:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:40,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:40,688 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 13:38:40,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326104955] [2022-01-10 13:38:40,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326104955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:40,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:40,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:40,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204400736] [2022-01-10 13:38:40,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:40,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:40,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:40,691 INFO L87 Difference]: Start difference. First operand 34989 states and 44937 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 13:38:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:43,245 INFO L93 Difference]: Finished difference Result 67591 states and 85602 transitions. [2022-01-10 13:38:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 232 [2022-01-10 13:38:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:43,303 INFO L225 Difference]: With dead ends: 67591 [2022-01-10 13:38:43,303 INFO L226 Difference]: Without dead ends: 34859 [2022-01-10 13:38:43,331 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 13:38:43,331 INFO L933 BasicCegarLoop]: 5673 mSDtfsCounter, 1711 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9631 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:43,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 9631 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34859 states. [2022-01-10 13:38:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34859 to 34859. [2022-01-10 13:38:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34859 states, 34857 states have (on average 1.2847634621453368) internal successors, (44783), 34858 states have internal predecessors, (44783), 0 states have call successors, (0), 0 states 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 13:38:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34859 states to 34859 states and 44783 transitions. [2022-01-10 13:38:45,872 INFO L78 Accepts]: Start accepts. Automaton has 34859 states and 44783 transitions. Word has length 232 [2022-01-10 13:38:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:45,872 INFO L470 AbstractCegarLoop]: Abstraction has 34859 states and 44783 transitions. [2022-01-10 13:38:45,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 13:38:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 34859 states and 44783 transitions. [2022-01-10 13:38:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 13:38:45,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:45,885 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] [2022-01-10 13:38:45,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 13:38:45,885 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash -57305888, now seen corresponding path program 1 times [2022-01-10 13:38:45,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:45,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510372417] [2022-01-10 13:38:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:45,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:45,935 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 13:38:45,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510372417] [2022-01-10 13:38:45,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510372417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:45,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:45,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:45,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664094949] [2022-01-10 13:38:45,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:45,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:45,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:45,936 INFO L87 Difference]: Start difference. First operand 34859 states and 44783 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 13:38:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:38:50,465 INFO L93 Difference]: Finished difference Result 99040 states and 124504 transitions. [2022-01-10 13:38:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:38:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-01-10 13:38:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:38:50,572 INFO L225 Difference]: With dead ends: 99040 [2022-01-10 13:38:50,572 INFO L226 Difference]: Without dead ends: 66438 [2022-01-10 13:38:50,602 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 13:38:50,605 INFO L933 BasicCegarLoop]: 6016 mSDtfsCounter, 5519 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5519 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:38:50,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5519 Valid, 7698 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:38:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66438 states. [2022-01-10 13:38:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66438 to 64532. [2022-01-10 13:38:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64532 states, 64530 states have (on average 1.2620176662017666) internal successors, (81438), 64531 states have internal predecessors, (81438), 0 states have call successors, (0), 0 states 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 13:38:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64532 states to 64532 states and 81438 transitions. [2022-01-10 13:38:55,330 INFO L78 Accepts]: Start accepts. Automaton has 64532 states and 81438 transitions. Word has length 233 [2022-01-10 13:38:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:38:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 64532 states and 81438 transitions. [2022-01-10 13:38:55,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 13:38:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 64532 states and 81438 transitions. [2022-01-10 13:38:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 13:38:55,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:38:55,352 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] [2022-01-10 13:38:55,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 13:38:55,353 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:38:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:38:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2054858177, now seen corresponding path program 1 times [2022-01-10 13:38:55,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:38:55,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40317643] [2022-01-10 13:38:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:38:55,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:38:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:38:55,386 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 13:38:55,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:38:55,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40317643] [2022-01-10 13:38:55,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40317643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:38:55,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:38:55,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:38:55,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283224987] [2022-01-10 13:38:55,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:38:55,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:38:55,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:38:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:38:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:38:55,388 INFO L87 Difference]: Start difference. First operand 64532 states and 81438 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 13:39:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:00,222 INFO L93 Difference]: Finished difference Result 126757 states and 158698 transitions. [2022-01-10 13:39:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:00,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 233 [2022-01-10 13:39:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:00,305 INFO L225 Difference]: With dead ends: 126757 [2022-01-10 13:39:00,305 INFO L226 Difference]: Without dead ends: 64403 [2022-01-10 13:39:00,346 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 13:39:00,346 INFO L933 BasicCegarLoop]: 5672 mSDtfsCounter, 1709 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 9630 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:00,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 9630 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64403 states.