/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_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:02:17,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:02:17,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:02:17,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:02:17,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:02:17,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:02:17,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:02:17,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:02:17,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:02:17,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:02:17,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:02:17,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:02:17,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:02:17,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:02:17,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:02:17,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:02:17,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:02:17,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:02:17,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:02:17,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:02:17,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:02:17,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:02:17,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:02:17,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:02:17,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 20:02:17,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 20:02:17,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 20:02:17,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 20:02:17,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 20:02:17,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 20:02:17,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:02:17,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:02:17,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:02:17,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:02:17,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:02:17,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:02:17,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:02:17,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:02:17,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:02:17,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:02:17,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:02:17,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 20:02:17,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:02:17,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:02:17,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:02:17,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:02:17,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:02:17,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:02:17,421 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:02:17,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:02:17,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:02:17,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:02:17,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:02:17,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:02:17,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:02:17,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:02:17,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:02:17,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:02:17,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:02:17,426 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:02:17,426 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:02:17,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:02:17,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:02:17,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:02:17,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:02:17,621 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:02:17,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c [2022-01-10 20:02:17,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8be9506/831e6c25b37a4dcfbbda6ac7c47d5d0e/FLAG98deb2c03 [2022-01-10 20:02:18,043 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:02:18,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c [2022-01-10 20:02:18,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8be9506/831e6c25b37a4dcfbbda6ac7c47d5d0e/FLAG98deb2c03 [2022-01-10 20:02:18,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8be9506/831e6c25b37a4dcfbbda6ac7c47d5d0e [2022-01-10 20:02:18,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:02:18,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:02:18,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:02:18,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:02:18,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:02:18,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4bfc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18, skipping insertion in model container [2022-01-10 20:02:18,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:02:18,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:02:18,254 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/pc_sfifo_2.cil-1+token_ring.03.cil-1.c[914,927] [2022-01-10 20:02:18,317 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/pc_sfifo_2.cil-1+token_ring.03.cil-1.c[7115,7128] [2022-01-10 20:02:18,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:02:18,378 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:02:18,386 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/pc_sfifo_2.cil-1+token_ring.03.cil-1.c[914,927] [2022-01-10 20:02:18,417 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/pc_sfifo_2.cil-1+token_ring.03.cil-1.c[7115,7128] [2022-01-10 20:02:18,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:02:18,454 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:02:18,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18 WrapperNode [2022-01-10 20:02:18,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:02:18,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:02:18,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:02:18,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:02:18,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,531 INFO L137 Inliner]: procedures = 60, calls = 67, calls flagged for inlining = 62, calls inlined = 90, statements flattened = 1126 [2022-01-10 20:02:18,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:02:18,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:02:18,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:02:18,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:02:18,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:02:18,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:02:18,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:02:18,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:02:18,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (1/1) ... [2022-01-10 20:02:18,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:02:18,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:02:18,634 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 20:02:18,641 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 20:02:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:02:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:02:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:02:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:02:18,786 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:02:18,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:02:19,444 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:02:19,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:02:19,455 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 20:02:19,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:19 BoogieIcfgContainer [2022-01-10 20:02:19,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:02:19,461 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:02:19,462 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:02:19,463 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:02:19,465 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:19" (1/1) ... [2022-01-10 20:02:19,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:02:19 BasicIcfg [2022-01-10 20:02:19,648 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:02:19,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:02:19,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:02:19,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:02:19,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:02:18" (1/4) ... [2022-01-10 20:02:19,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4430d829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:19, skipping insertion in model container [2022-01-10 20:02:19,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:18" (2/4) ... [2022-01-10 20:02:19,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4430d829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:02:19, skipping insertion in model container [2022-01-10 20:02:19,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:02:19" (3/4) ... [2022-01-10 20:02:19,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4430d829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:02:19, skipping insertion in model container [2022-01-10 20:02:19,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:02:19" (4/4) ... [2022-01-10 20:02:19,653 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-1.cTransformedIcfg [2022-01-10 20:02:19,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:02:19,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 20:02:19,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:02:19,693 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 20:02:19,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 20:02:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 431 states have (on average 1.5522041763341068) internal successors, (669), 435 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:19,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:19,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:19,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -546067027, now seen corresponding path program 1 times [2022-01-10 20:02:19,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:19,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818778710] [2022-01-10 20:02:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:19,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:19,965 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 20:02:19,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:19,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818778710] [2022-01-10 20:02:19,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818778710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:19,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:19,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:19,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118186275] [2022-01-10 20:02:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:19,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:19,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:19,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:19,999 INFO L87 Difference]: Start difference. First operand has 436 states, 431 states have (on average 1.5522041763341068) internal successors, (669), 435 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,112 INFO L93 Difference]: Finished difference Result 899 states and 1377 transitions. [2022-01-10 20:02:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 20:02:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,130 INFO L225 Difference]: With dead ends: 899 [2022-01-10 20:02:20,130 INFO L226 Difference]: Without dead ends: 519 [2022-01-10 20:02:20,135 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 20:02:20,138 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 131 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:20,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1264 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-10 20:02:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 515. [2022-01-10 20:02:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 511 states have (on average 1.4892367906066537) internal successors, (761), 514 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 761 transitions. [2022-01-10 20:02:20,201 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 761 transitions. Word has length 44 [2022-01-10 20:02:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:20,201 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 761 transitions. [2022-01-10 20:02:20,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 761 transitions. [2022-01-10 20:02:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:20,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:20,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:02:20,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -365046899, now seen corresponding path program 1 times [2022-01-10 20:02:20,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:20,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192291182] [2022-01-10 20:02:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:20,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:20,285 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 20:02:20,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:20,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192291182] [2022-01-10 20:02:20,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192291182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:20,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:20,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892965220] [2022-01-10 20:02:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:20,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,288 INFO L87 Difference]: Start difference. First operand 515 states and 761 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,319 INFO L93 Difference]: Finished difference Result 799 states and 1165 transitions. [2022-01-10 20:02:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 20:02:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,322 INFO L225 Difference]: With dead ends: 799 [2022-01-10 20:02:20,322 INFO L226 Difference]: Without dead ends: 637 [2022-01-10 20:02:20,324 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 20:02:20,325 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 611 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:20,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 716 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-01-10 20:02:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 627. [2022-01-10 20:02:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 623 states have (on average 1.4735152487961476) internal successors, (918), 626 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 918 transitions. [2022-01-10 20:02:20,380 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 918 transitions. Word has length 44 [2022-01-10 20:02:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:20,380 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 918 transitions. [2022-01-10 20:02:20,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 918 transitions. [2022-01-10 20:02:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:20,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:20,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:20,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:02:20,390 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1673550866, now seen corresponding path program 1 times [2022-01-10 20:02:20,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:20,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132790494] [2022-01-10 20:02:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:20,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:20,453 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 20:02:20,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132790494] [2022-01-10 20:02:20,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132790494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:20,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:20,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:20,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615621587] [2022-01-10 20:02:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:20,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:20,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,457 INFO L87 Difference]: Start difference. First operand 627 states and 918 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,521 INFO L93 Difference]: Finished difference Result 1038 states and 1495 transitions. [2022-01-10 20:02:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 20:02:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,524 INFO L225 Difference]: With dead ends: 1038 [2022-01-10 20:02:20,524 INFO L226 Difference]: Without dead ends: 776 [2022-01-10 20:02:20,527 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 20:02:20,530 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 102 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:20,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1225 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-01-10 20:02:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 772. [2022-01-10 20:02:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 768 states have (on average 1.4505208333333333) internal successors, (1114), 771 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1114 transitions. [2022-01-10 20:02:20,553 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1114 transitions. Word has length 44 [2022-01-10 20:02:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:20,553 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1114 transitions. [2022-01-10 20:02:20,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1114 transitions. [2022-01-10 20:02:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 20:02:20,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:20,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:20,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:02:20,555 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2082375091, now seen corresponding path program 1 times [2022-01-10 20:02:20,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683812474] [2022-01-10 20:02:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:20,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:20,625 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 20:02:20,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:20,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683812474] [2022-01-10 20:02:20,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683812474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:20,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:20,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:20,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027715890] [2022-01-10 20:02:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:20,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:20,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,629 INFO L87 Difference]: Start difference. First operand 772 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,672 INFO L93 Difference]: Finished difference Result 1524 states and 2162 transitions. [2022-01-10 20:02:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 20:02:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,676 INFO L225 Difference]: With dead ends: 1524 [2022-01-10 20:02:20,676 INFO L226 Difference]: Without dead ends: 1160 [2022-01-10 20:02:20,678 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 20:02:20,682 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 590 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:20,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 742 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-10 20:02:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1156. [2022-01-10 20:02:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1152 states have (on average 1.4114583333333333) internal successors, (1626), 1155 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1626 transitions. [2022-01-10 20:02:20,716 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1626 transitions. Word has length 44 [2022-01-10 20:02:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:20,717 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1626 transitions. [2022-01-10 20:02:20,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1626 transitions. [2022-01-10 20:02:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 20:02:20,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:20,718 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] [2022-01-10 20:02:20,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:02:20,719 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:20,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 181105350, now seen corresponding path program 1 times [2022-01-10 20:02:20,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:20,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600138512] [2022-01-10 20:02:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:20,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:20,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:20,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600138512] [2022-01-10 20:02:20,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600138512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:20,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:20,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:20,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839853121] [2022-01-10 20:02:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:20,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:20,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,764 INFO L87 Difference]: Start difference. First operand 1156 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,823 INFO L93 Difference]: Finished difference Result 2099 states and 2922 transitions. [2022-01-10 20:02:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 20:02:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,828 INFO L225 Difference]: With dead ends: 2099 [2022-01-10 20:02:20,828 INFO L226 Difference]: Without dead ends: 1319 [2022-01-10 20:02:20,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,830 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 88 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:20,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1197 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-01-10 20:02:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1296. [2022-01-10 20:02:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1292 states have (on average 1.388544891640867) internal successors, (1794), 1295 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1794 transitions. [2022-01-10 20:02:20,867 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1794 transitions. Word has length 45 [2022-01-10 20:02:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:20,868 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1794 transitions. [2022-01-10 20:02:20,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1794 transitions. [2022-01-10 20:02:20,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 20:02:20,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:20,869 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] [2022-01-10 20:02:20,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:02:20,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:20,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash 210687813, now seen corresponding path program 1 times [2022-01-10 20:02:20,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:20,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431153418] [2022-01-10 20:02:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:20,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:20,935 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 20:02:20,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431153418] [2022-01-10 20:02:20,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431153418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:20,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:20,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025011770] [2022-01-10 20:02:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:20,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:20,937 INFO L87 Difference]: Start difference. First operand 1296 states and 1794 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:20,992 INFO L93 Difference]: Finished difference Result 2925 states and 3995 transitions. [2022-01-10 20:02:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 20:02:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:20,998 INFO L225 Difference]: With dead ends: 2925 [2022-01-10 20:02:20,998 INFO L226 Difference]: Without dead ends: 2015 [2022-01-10 20:02:21,000 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 20:02:21,001 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 576 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:21,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 709 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2022-01-10 20:02:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1961. [2022-01-10 20:02:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1957 states have (on average 1.3622892181911088) internal successors, (2666), 1960 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2666 transitions. [2022-01-10 20:02:21,062 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2666 transitions. Word has length 45 [2022-01-10 20:02:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:21,063 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2666 transitions. [2022-01-10 20:02:21,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2666 transitions. [2022-01-10 20:02:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:21,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:21,064 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:21,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:02:21,064 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:21,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1751002510, now seen corresponding path program 1 times [2022-01-10 20:02:21,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:21,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982440287] [2022-01-10 20:02:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:21,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:21,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982440287] [2022-01-10 20:02:21,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982440287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:21,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:21,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:21,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715700548] [2022-01-10 20:02:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:21,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:21,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:21,133 INFO L87 Difference]: Start difference. First operand 1961 states and 2666 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:21,256 INFO L93 Difference]: Finished difference Result 4672 states and 6324 transitions. [2022-01-10 20:02:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:21,265 INFO L225 Difference]: With dead ends: 4672 [2022-01-10 20:02:21,265 INFO L226 Difference]: Without dead ends: 3303 [2022-01-10 20:02:21,267 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 20:02:21,268 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 390 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:21,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 2580 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2022-01-10 20:02:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2009. [2022-01-10 20:02:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2005 states have (on average 1.344638403990025) internal successors, (2696), 2008 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2696 transitions. [2022-01-10 20:02:21,355 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2696 transitions. Word has length 52 [2022-01-10 20:02:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:21,355 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2696 transitions. [2022-01-10 20:02:21,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2696 transitions. [2022-01-10 20:02:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:21,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:21,357 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:21,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:02:21,357 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:21,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:21,357 INFO L85 PathProgramCache]: Analyzing trace with hash 199297745, now seen corresponding path program 1 times [2022-01-10 20:02:21,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:21,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402973231] [2022-01-10 20:02:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:21,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:21,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:21,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402973231] [2022-01-10 20:02:21,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402973231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:21,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:21,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:21,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867904839] [2022-01-10 20:02:21,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:21,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:21,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:21,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:21,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:21,412 INFO L87 Difference]: Start difference. First operand 2009 states and 2696 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:21,567 INFO L93 Difference]: Finished difference Result 4372 states and 5853 transitions. [2022-01-10 20:02:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:21,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:21,575 INFO L225 Difference]: With dead ends: 4372 [2022-01-10 20:02:21,575 INFO L226 Difference]: Without dead ends: 2765 [2022-01-10 20:02:21,577 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 20:02:21,578 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 351 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:21,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2592 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-01-10 20:02:21,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2021. [2022-01-10 20:02:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2017 states have (on average 1.3277144273673773) internal successors, (2678), 2020 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2678 transitions. [2022-01-10 20:02:21,708 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2678 transitions. Word has length 52 [2022-01-10 20:02:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:21,708 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 2678 transitions. [2022-01-10 20:02:21,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2678 transitions. [2022-01-10 20:02:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 20:02:21,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:21,710 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:21,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:02:21,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:21,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 210613872, now seen corresponding path program 1 times [2022-01-10 20:02:21,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:21,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798432074] [2022-01-10 20:02:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:21,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:21,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798432074] [2022-01-10 20:02:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798432074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:21,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:02:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116658425] [2022-01-10 20:02:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:21,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:02:21,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:02:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:02:21,788 INFO L87 Difference]: Start difference. First operand 2021 states and 2678 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:21,922 INFO L93 Difference]: Finished difference Result 2371 states and 3130 transitions. [2022-01-10 20:02:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:02:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 20:02:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:21,929 INFO L225 Difference]: With dead ends: 2371 [2022-01-10 20:02:21,929 INFO L226 Difference]: Without dead ends: 2369 [2022-01-10 20:02:21,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:21,931 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1287 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:21,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 716 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2022-01-10 20:02:22,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2019. [2022-01-10 20:02:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2016 states have (on average 1.3229166666666667) internal successors, (2667), 2018 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2667 transitions. [2022-01-10 20:02:22,033 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2667 transitions. Word has length 52 [2022-01-10 20:02:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:22,033 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 2667 transitions. [2022-01-10 20:02:22,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:22,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2667 transitions. [2022-01-10 20:02:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 20:02:22,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:22,034 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:02:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 20:02:22,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2060903647, now seen corresponding path program 1 times [2022-01-10 20:02:22,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:22,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230307964] [2022-01-10 20:02:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:22,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:22,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:22,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230307964] [2022-01-10 20:02:22,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230307964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:02:22,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42705672] [2022-01-10 20:02:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:22,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:02:22,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:02:22,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:02:22,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:02:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:22,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:02:22,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:02:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:22,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:02:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:22,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42705672] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:02:22,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:02:22,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 20:02:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546936126] [2022-01-10 20:02:22,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:02:22,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:02:22,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:02:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:02:22,804 INFO L87 Difference]: Start difference. First operand 2019 states and 2667 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:23,186 INFO L93 Difference]: Finished difference Result 5512 states and 7253 transitions. [2022-01-10 20:02:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:02:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 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 53 [2022-01-10 20:02:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:23,201 INFO L225 Difference]: With dead ends: 5512 [2022-01-10 20:02:23,201 INFO L226 Difference]: Without dead ends: 5510 [2022-01-10 20:02:23,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:02:23,203 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 2271 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:23,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 3294 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2022-01-10 20:02:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 3540. [2022-01-10 20:02:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3537 states have (on average 1.317500706813684) internal successors, (4660), 3539 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4660 transitions. [2022-01-10 20:02:23,477 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4660 transitions. Word has length 53 [2022-01-10 20:02:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:23,477 INFO L470 AbstractCegarLoop]: Abstraction has 3540 states and 4660 transitions. [2022-01-10 20:02:23,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4660 transitions. [2022-01-10 20:02:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:02:23,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:23,478 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-10 20:02:23,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 20:02:23,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 20:02:23,697 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash 678881442, now seen corresponding path program 2 times [2022-01-10 20:02:23,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:23,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057809949] [2022-01-10 20:02:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:23,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:23,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:23,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057809949] [2022-01-10 20:02:23,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057809949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:23,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:23,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:23,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144950411] [2022-01-10 20:02:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:23,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:23,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:23,726 INFO L87 Difference]: Start difference. First operand 3540 states and 4660 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:23,891 INFO L93 Difference]: Finished difference Result 5178 states and 6825 transitions. [2022-01-10 20:02:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:23,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 20:02:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:23,898 INFO L225 Difference]: With dead ends: 5178 [2022-01-10 20:02:23,898 INFO L226 Difference]: Without dead ends: 2450 [2022-01-10 20:02:23,901 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 20:02:23,902 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 572 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:23,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 797 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-01-10 20:02:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2422. [2022-01-10 20:02:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2419 states have (on average 1.3046713517982638) internal successors, (3156), 2421 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3156 transitions. [2022-01-10 20:02:24,050 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3156 transitions. Word has length 56 [2022-01-10 20:02:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:24,051 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 3156 transitions. [2022-01-10 20:02:24,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3156 transitions. [2022-01-10 20:02:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 20:02:24,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:24,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:24,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:02:24,052 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 463734239, now seen corresponding path program 1 times [2022-01-10 20:02:24,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422110046] [2022-01-10 20:02:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:24,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:24,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422110046] [2022-01-10 20:02:24,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422110046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:24,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:24,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:24,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787845383] [2022-01-10 20:02:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:24,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:24,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:24,085 INFO L87 Difference]: Start difference. First operand 2422 states and 3156 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:24,322 INFO L93 Difference]: Finished difference Result 5801 states and 7436 transitions. [2022-01-10 20:02:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:24,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 20:02:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:24,337 INFO L225 Difference]: With dead ends: 5801 [2022-01-10 20:02:24,337 INFO L226 Difference]: Without dead ends: 2988 [2022-01-10 20:02:24,343 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 20:02:24,344 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 87 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:24,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1314 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2022-01-10 20:02:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2988. [2022-01-10 20:02:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2985 states have (on average 1.283752093802345) internal successors, (3832), 2987 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 3832 transitions. [2022-01-10 20:02:24,547 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 3832 transitions. Word has length 60 [2022-01-10 20:02:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:24,547 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 3832 transitions. [2022-01-10 20:02:24,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 3832 transitions. [2022-01-10 20:02:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:24,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:24,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:24,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:02:24,549 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:24,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1052078073, now seen corresponding path program 1 times [2022-01-10 20:02:24,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:24,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16967753] [2022-01-10 20:02:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:24,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:24,569 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 20:02:24,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:24,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16967753] [2022-01-10 20:02:24,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16967753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:24,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:24,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:24,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884752629] [2022-01-10 20:02:24,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:24,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:24,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:24,571 INFO L87 Difference]: Start difference. First operand 2988 states and 3832 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:24,761 INFO L93 Difference]: Finished difference Result 3547 states and 4667 transitions. [2022-01-10 20:02:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:24,768 INFO L225 Difference]: With dead ends: 3547 [2022-01-10 20:02:24,768 INFO L226 Difference]: Without dead ends: 3230 [2022-01-10 20:02:24,769 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 20:02:24,770 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 560 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1008 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 20:02:24,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 1008 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:24,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2022-01-10 20:02:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3226. [2022-01-10 20:02:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.2987899472541111) internal successors, (4186), 3225 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4186 transitions. [2022-01-10 20:02:24,948 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4186 transitions. Word has length 66 [2022-01-10 20:02:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:24,948 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4186 transitions. [2022-01-10 20:02:24,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4186 transitions. [2022-01-10 20:02:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:24,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:24,950 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] [2022-01-10 20:02:24,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:02:24,950 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash 213023783, now seen corresponding path program 1 times [2022-01-10 20:02:24,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:24,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364406451] [2022-01-10 20:02:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:24,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:24,972 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 20:02:24,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364406451] [2022-01-10 20:02:24,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364406451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:24,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:24,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:24,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631698781] [2022-01-10 20:02:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:24,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:24,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:24,974 INFO L87 Difference]: Start difference. First operand 3226 states and 4186 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:25,150 INFO L93 Difference]: Finished difference Result 3780 states and 5014 transitions. [2022-01-10 20:02:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:25,156 INFO L225 Difference]: With dead ends: 3780 [2022-01-10 20:02:25,156 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:25,157 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 20:02:25,158 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 600 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 606 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 20:02:25,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.2963077877753646) internal successors, (4178), 3225 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4178 transitions. [2022-01-10 20:02:25,337 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4178 transitions. Word has length 66 [2022-01-10 20:02:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:25,337 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4178 transitions. [2022-01-10 20:02:25,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4178 transitions. [2022-01-10 20:02:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:25,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:25,339 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] [2022-01-10 20:02:25,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:02:25,339 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1131639801, now seen corresponding path program 1 times [2022-01-10 20:02:25,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697794968] [2022-01-10 20:02:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:25,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:25,356 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 20:02:25,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:25,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697794968] [2022-01-10 20:02:25,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697794968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:25,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:25,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:25,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11560616] [2022-01-10 20:02:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:25,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:25,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:25,357 INFO L87 Difference]: Start difference. First operand 3226 states and 4178 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:25,519 INFO L93 Difference]: Finished difference Result 3779 states and 4997 transitions. [2022-01-10 20:02:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:25,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:25,524 INFO L225 Difference]: With dead ends: 3779 [2022-01-10 20:02:25,524 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:25,526 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 20:02:25,526 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 594 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 601 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 20:02:25,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 601 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.293825628296618) internal successors, (4170), 3225 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4170 transitions. [2022-01-10 20:02:25,761 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4170 transitions. Word has length 66 [2022-01-10 20:02:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:25,761 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4170 transitions. [2022-01-10 20:02:25,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4170 transitions. [2022-01-10 20:02:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:25,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:25,763 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] [2022-01-10 20:02:25,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:02:25,764 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash -482279385, now seen corresponding path program 1 times [2022-01-10 20:02:25,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:25,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75678576] [2022-01-10 20:02:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:25,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:25,783 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 20:02:25,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:25,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75678576] [2022-01-10 20:02:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75678576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:25,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:25,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462701143] [2022-01-10 20:02:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:25,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:25,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:25,785 INFO L87 Difference]: Start difference. First operand 3226 states and 4170 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:25,989 INFO L93 Difference]: Finished difference Result 3778 states and 4980 transitions. [2022-01-10 20:02:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:25,995 INFO L225 Difference]: With dead ends: 3778 [2022-01-10 20:02:25,995 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:25,997 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 20:02:25,997 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 596 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 20:02:25,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 596 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.2913434688178715) internal successors, (4162), 3225 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4162 transitions. [2022-01-10 20:02:26,188 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4162 transitions. Word has length 66 [2022-01-10 20:02:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:26,188 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4162 transitions. [2022-01-10 20:02:26,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4162 transitions. [2022-01-10 20:02:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:26,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:26,189 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] [2022-01-10 20:02:26,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:02:26,190 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:26,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1478330375, now seen corresponding path program 1 times [2022-01-10 20:02:26,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:26,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063844016] [2022-01-10 20:02:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:26,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:26,208 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 20:02:26,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:26,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063844016] [2022-01-10 20:02:26,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063844016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:26,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:26,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:26,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454559612] [2022-01-10 20:02:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:26,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:26,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:26,210 INFO L87 Difference]: Start difference. First operand 3226 states and 4162 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:26,407 INFO L93 Difference]: Finished difference Result 3777 states and 4963 transitions. [2022-01-10 20:02:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:26,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:26,413 INFO L225 Difference]: With dead ends: 3777 [2022-01-10 20:02:26,413 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:26,414 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 20:02:26,415 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 534 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:26,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 617 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.285758609990692) internal successors, (4144), 3225 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4144 transitions. [2022-01-10 20:02:26,621 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4144 transitions. Word has length 66 [2022-01-10 20:02:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4144 transitions. [2022-01-10 20:02:26,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4144 transitions. [2022-01-10 20:02:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:26,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:26,622 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] [2022-01-10 20:02:26,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 20:02:26,623 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1851745253, now seen corresponding path program 1 times [2022-01-10 20:02:26,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880464715] [2022-01-10 20:02:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:26,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:26,641 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 20:02:26,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:26,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880464715] [2022-01-10 20:02:26,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880464715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:26,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:26,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:26,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331779225] [2022-01-10 20:02:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:26,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:26,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:26,643 INFO L87 Difference]: Start difference. First operand 3226 states and 4144 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:26,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:26,869 INFO L93 Difference]: Finished difference Result 3776 states and 4926 transitions. [2022-01-10 20:02:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:26,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:26,890 INFO L225 Difference]: With dead ends: 3776 [2022-01-10 20:02:26,890 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:26,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:26,891 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 523 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:26,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 605 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.2801737511635123) internal successors, (4126), 3225 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4126 transitions. [2022-01-10 20:02:27,080 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4126 transitions. Word has length 66 [2022-01-10 20:02:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:27,080 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4126 transitions. [2022-01-10 20:02:27,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4126 transitions. [2022-01-10 20:02:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:27,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:27,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:27,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 20:02:27,082 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1319604092, now seen corresponding path program 1 times [2022-01-10 20:02:27,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:27,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150415835] [2022-01-10 20:02:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:27,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:27,100 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 20:02:27,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:27,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150415835] [2022-01-10 20:02:27,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150415835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:27,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:27,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:27,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098520777] [2022-01-10 20:02:27,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:27,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:27,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:27,102 INFO L87 Difference]: Start difference. First operand 3226 states and 4126 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:27,350 INFO L93 Difference]: Finished difference Result 3775 states and 4889 transitions. [2022-01-10 20:02:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:27,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:27,356 INFO L225 Difference]: With dead ends: 3775 [2022-01-10 20:02:27,356 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:27,358 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 20:02:27,358 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 512 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:27,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 593 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.2745888923363327) internal successors, (4108), 3225 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4108 transitions. [2022-01-10 20:02:27,698 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4108 transitions. Word has length 66 [2022-01-10 20:02:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:27,698 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4108 transitions. [2022-01-10 20:02:27,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4108 transitions. [2022-01-10 20:02:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:27,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:27,701 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] [2022-01-10 20:02:27,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 20:02:27,701 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash -725336925, now seen corresponding path program 1 times [2022-01-10 20:02:27,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:27,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903803527] [2022-01-10 20:02:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:27,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:27,729 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 20:02:27,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:27,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903803527] [2022-01-10 20:02:27,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903803527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:27,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:27,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:27,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578756396] [2022-01-10 20:02:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:27,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:27,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:27,731 INFO L87 Difference]: Start difference. First operand 3226 states and 4108 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:28,021 INFO L93 Difference]: Finished difference Result 3774 states and 4852 transitions. [2022-01-10 20:02:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:28,026 INFO L225 Difference]: With dead ends: 3774 [2022-01-10 20:02:28,026 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 20:02:28,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:28,028 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 501 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:28,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 581 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 20:02:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2022-01-10 20:02:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3223 states have (on average 1.269004033509153) internal successors, (4090), 3225 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4090 transitions. [2022-01-10 20:02:28,253 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4090 transitions. Word has length 66 [2022-01-10 20:02:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 4090 transitions. [2022-01-10 20:02:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4090 transitions. [2022-01-10 20:02:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:28,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:28,255 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] [2022-01-10 20:02:28,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 20:02:28,255 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1243630461, now seen corresponding path program 1 times [2022-01-10 20:02:28,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:28,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630234807] [2022-01-10 20:02:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:28,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:28,293 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 20:02:28,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:28,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630234807] [2022-01-10 20:02:28,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630234807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:28,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:28,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:28,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670969432] [2022-01-10 20:02:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:28,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:28,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:28,294 INFO L87 Difference]: Start difference. First operand 3226 states and 4090 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:28,593 INFO L93 Difference]: Finished difference Result 4097 states and 5270 transitions. [2022-01-10 20:02:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:28,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:28,599 INFO L225 Difference]: With dead ends: 4097 [2022-01-10 20:02:28,600 INFO L226 Difference]: Without dead ends: 3556 [2022-01-10 20:02:28,601 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 20:02:28,601 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1154 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:28,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 1673 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-01-10 20:02:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3232. [2022-01-10 20:02:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 3229 states have (on average 1.2654072468256425) internal successors, (4086), 3231 states have internal predecessors, (4086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4086 transitions. [2022-01-10 20:02:28,873 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4086 transitions. Word has length 66 [2022-01-10 20:02:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:28,873 INFO L470 AbstractCegarLoop]: Abstraction has 3232 states and 4086 transitions. [2022-01-10 20:02:28,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4086 transitions. [2022-01-10 20:02:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:28,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:28,897 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] [2022-01-10 20:02:28,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 20:02:28,897 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1692327100, now seen corresponding path program 1 times [2022-01-10 20:02:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:28,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580065397] [2022-01-10 20:02:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:28,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:28,934 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 20:02:28,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580065397] [2022-01-10 20:02:28,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580065397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:28,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:28,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:02:28,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855688154] [2022-01-10 20:02:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:28,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:02:28,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:02:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:02:28,936 INFO L87 Difference]: Start difference. First operand 3232 states and 4086 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:29,269 INFO L93 Difference]: Finished difference Result 4220 states and 5402 transitions. [2022-01-10 20:02:29,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:02:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:29,277 INFO L225 Difference]: With dead ends: 4220 [2022-01-10 20:02:29,277 INFO L226 Difference]: Without dead ends: 3694 [2022-01-10 20:02:29,279 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 20:02:29,281 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 898 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:29,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 1994 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-01-10 20:02:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3238. [2022-01-10 20:02:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3235 states have (on average 1.261823802163833) internal successors, (4082), 3237 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4082 transitions. [2022-01-10 20:02:29,514 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4082 transitions. Word has length 66 [2022-01-10 20:02:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:29,515 INFO L470 AbstractCegarLoop]: Abstraction has 3238 states and 4082 transitions. [2022-01-10 20:02:29,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4082 transitions. [2022-01-10 20:02:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 20:02:29,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:29,516 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] [2022-01-10 20:02:29,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 20:02:29,516 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash 525430853, now seen corresponding path program 1 times [2022-01-10 20:02:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366564061] [2022-01-10 20:02:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:29,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:29,537 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 20:02:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:29,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366564061] [2022-01-10 20:02:29,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366564061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:29,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:29,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:29,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472388047] [2022-01-10 20:02:29,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:29,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:29,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:29,538 INFO L87 Difference]: Start difference. First operand 3238 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:29,799 INFO L93 Difference]: Finished difference Result 4280 states and 5419 transitions. [2022-01-10 20:02:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 20:02:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:29,805 INFO L225 Difference]: With dead ends: 4280 [2022-01-10 20:02:29,805 INFO L226 Difference]: Without dead ends: 3722 [2022-01-10 20:02:29,808 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 20:02:29,809 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 448 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:29,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 870 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2022-01-10 20:02:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3668. [2022-01-10 20:02:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3665 states have (on average 1.2613915416098227) internal successors, (4623), 3667 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 4623 transitions. [2022-01-10 20:02:30,037 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 4623 transitions. Word has length 66 [2022-01-10 20:02:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:30,037 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 4623 transitions. [2022-01-10 20:02:30,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 4623 transitions. [2022-01-10 20:02:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 20:02:30,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:30,039 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:30,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 20:02:30,039 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 547661498, now seen corresponding path program 1 times [2022-01-10 20:02:30,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440123000] [2022-01-10 20:02:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:30,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:30,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:30,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440123000] [2022-01-10 20:02:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440123000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:30,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:30,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:30,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413633274] [2022-01-10 20:02:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:30,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:30,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:30,067 INFO L87 Difference]: Start difference. First operand 3668 states and 4623 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:30,336 INFO L93 Difference]: Finished difference Result 6238 states and 7866 transitions. [2022-01-10 20:02:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:30,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 20:02:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:30,341 INFO L225 Difference]: With dead ends: 6238 [2022-01-10 20:02:30,341 INFO L226 Difference]: Without dead ends: 3668 [2022-01-10 20:02:30,344 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 20:02:30,344 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 487 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:30,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 628 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2022-01-10 20:02:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3668. [2022-01-10 20:02:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3665 states have (on average 1.246111869031378) internal successors, (4567), 3667 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 4567 transitions. [2022-01-10 20:02:30,678 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 4567 transitions. Word has length 68 [2022-01-10 20:02:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:30,678 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 4567 transitions. [2022-01-10 20:02:30,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 4567 transitions. [2022-01-10 20:02:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 20:02:30,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:30,680 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:30,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 20:02:30,680 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1193919387, now seen corresponding path program 1 times [2022-01-10 20:02:30,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:30,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464648839] [2022-01-10 20:02:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:30,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:02:30,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464648839] [2022-01-10 20:02:30,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464648839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:30,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:30,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:30,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627823676] [2022-01-10 20:02:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:30,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:30,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:30,706 INFO L87 Difference]: Start difference. First operand 3668 states and 4567 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:30,923 INFO L93 Difference]: Finished difference Result 5732 states and 7157 transitions. [2022-01-10 20:02:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:30,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 20:02:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:30,928 INFO L225 Difference]: With dead ends: 5732 [2022-01-10 20:02:30,928 INFO L226 Difference]: Without dead ends: 3122 [2022-01-10 20:02:30,932 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 20:02:30,932 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 97 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:30,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1148 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-01-10 20:02:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3120. [2022-01-10 20:02:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3117 states have (on average 1.2409367982034007) internal successors, (3868), 3119 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 3868 transitions. [2022-01-10 20:02:31,142 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 3868 transitions. Word has length 69 [2022-01-10 20:02:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:31,143 INFO L470 AbstractCegarLoop]: Abstraction has 3120 states and 3868 transitions. [2022-01-10 20:02:31,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 3868 transitions. [2022-01-10 20:02:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 20:02:31,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:31,145 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] [2022-01-10 20:02:31,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 20:02:31,146 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1136530323, now seen corresponding path program 1 times [2022-01-10 20:02:31,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:31,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117595528] [2022-01-10 20:02:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:31,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:31,184 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 20:02:31,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:31,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117595528] [2022-01-10 20:02:31,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117595528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:31,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:31,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:31,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280456559] [2022-01-10 20:02:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:31,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:31,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:31,186 INFO L87 Difference]: Start difference. First operand 3120 states and 3868 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:31,444 INFO L93 Difference]: Finished difference Result 4996 states and 6270 transitions. [2022-01-10 20:02:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:31,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 20:02:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:31,450 INFO L225 Difference]: With dead ends: 4996 [2022-01-10 20:02:31,450 INFO L226 Difference]: Without dead ends: 4014 [2022-01-10 20:02:31,452 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 20:02:31,452 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 467 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:31,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 866 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:31,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2022-01-10 20:02:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3922. [2022-01-10 20:02:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3919 states have (on average 1.2472569533044144) internal successors, (4888), 3921 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 4888 transitions. [2022-01-10 20:02:31,710 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 4888 transitions. Word has length 106 [2022-01-10 20:02:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:31,710 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 4888 transitions. [2022-01-10 20:02:31,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 4888 transitions. [2022-01-10 20:02:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 20:02:31,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:31,713 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] [2022-01-10 20:02:31,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 20:02:31,713 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 618027922, now seen corresponding path program 1 times [2022-01-10 20:02:31,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463849366] [2022-01-10 20:02:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:31,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:31,737 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 20:02:31,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463849366] [2022-01-10 20:02:31,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463849366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:31,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:31,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:31,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075919950] [2022-01-10 20:02:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:31,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:31,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:31,739 INFO L87 Difference]: Start difference. First operand 3922 states and 4888 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:32,138 INFO L93 Difference]: Finished difference Result 7351 states and 9213 transitions. [2022-01-10 20:02:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:32,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 20:02:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:32,145 INFO L225 Difference]: With dead ends: 7351 [2022-01-10 20:02:32,145 INFO L226 Difference]: Without dead ends: 5595 [2022-01-10 20:02:32,147 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 20:02:32,148 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 476 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:32,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1013 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-01-10 20:02:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5519. [2022-01-10 20:02:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5516 states have (on average 1.2420232052211748) internal successors, (6851), 5518 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 6851 transitions. [2022-01-10 20:02:32,476 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 6851 transitions. Word has length 106 [2022-01-10 20:02:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:32,476 INFO L470 AbstractCegarLoop]: Abstraction has 5519 states and 6851 transitions. [2022-01-10 20:02:32,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 6851 transitions. [2022-01-10 20:02:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 20:02:32,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:32,479 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] [2022-01-10 20:02:32,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 20:02:32,480 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:32,480 INFO L85 PathProgramCache]: Analyzing trace with hash -216374605, now seen corresponding path program 1 times [2022-01-10 20:02:32,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:32,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578543943] [2022-01-10 20:02:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:32,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:32,498 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 20:02:32,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:32,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578543943] [2022-01-10 20:02:32,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578543943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:32,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:32,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077513424] [2022-01-10 20:02:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:32,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:32,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:32,499 INFO L87 Difference]: Start difference. First operand 5519 states and 6851 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:32,856 INFO L93 Difference]: Finished difference Result 8849 states and 11028 transitions. [2022-01-10 20:02:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:32,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 20:02:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:32,861 INFO L225 Difference]: With dead ends: 8849 [2022-01-10 20:02:32,861 INFO L226 Difference]: Without dead ends: 5472 [2022-01-10 20:02:32,863 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 20:02:32,867 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 407 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 665 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 20:02:32,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 665 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-01-10 20:02:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5472. [2022-01-10 20:02:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5469 states have (on average 1.2428231852258182) internal successors, (6797), 5471 states have internal predecessors, (6797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 6797 transitions. [2022-01-10 20:02:33,183 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 6797 transitions. Word has length 106 [2022-01-10 20:02:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:33,183 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 6797 transitions. [2022-01-10 20:02:33,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 6797 transitions. [2022-01-10 20:02:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 20:02:33,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:33,186 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] [2022-01-10 20:02:33,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 20:02:33,187 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash -734348317, now seen corresponding path program 1 times [2022-01-10 20:02:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:33,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112948585] [2022-01-10 20:02:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:33,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:33,210 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 20:02:33,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112948585] [2022-01-10 20:02:33,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112948585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:33,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:33,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:33,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026457280] [2022-01-10 20:02:33,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:33,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:33,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:33,212 INFO L87 Difference]: Start difference. First operand 5472 states and 6797 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:33,733 INFO L93 Difference]: Finished difference Result 11722 states and 14604 transitions. [2022-01-10 20:02:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 20:02:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:33,742 INFO L225 Difference]: With dead ends: 11722 [2022-01-10 20:02:33,742 INFO L226 Difference]: Without dead ends: 8416 [2022-01-10 20:02:33,746 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 20:02:33,746 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 475 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:33,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1018 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-01-10 20:02:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8188. [2022-01-10 20:02:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8185 states have (on average 1.2388515577275503) internal successors, (10140), 8187 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 10140 transitions. [2022-01-10 20:02:34,238 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 10140 transitions. Word has length 107 [2022-01-10 20:02:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:34,238 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 10140 transitions. [2022-01-10 20:02:34,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 10140 transitions. [2022-01-10 20:02:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 20:02:34,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:34,248 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] [2022-01-10 20:02:34,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 20:02:34,248 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1902063775, now seen corresponding path program 1 times [2022-01-10 20:02:34,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:34,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117547446] [2022-01-10 20:02:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:34,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:34,270 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 20:02:34,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:34,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117547446] [2022-01-10 20:02:34,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117547446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:34,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:34,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:34,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575910635] [2022-01-10 20:02:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:34,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:34,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:34,272 INFO L87 Difference]: Start difference. First operand 8188 states and 10140 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:34,838 INFO L93 Difference]: Finished difference Result 14181 states and 17600 transitions. [2022-01-10 20:02:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 107 [2022-01-10 20:02:34,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:34,848 INFO L225 Difference]: With dead ends: 14181 [2022-01-10 20:02:34,849 INFO L226 Difference]: Without dead ends: 8142 [2022-01-10 20:02:34,855 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 20:02:34,856 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 405 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 664 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 20:02:34,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 664 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-01-10 20:02:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8142. [2022-01-10 20:02:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8142 states, 8139 states have (on average 1.239464307654503) internal successors, (10088), 8141 states have internal predecessors, (10088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 10088 transitions. [2022-01-10 20:02:35,335 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 10088 transitions. Word has length 107 [2022-01-10 20:02:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:35,335 INFO L470 AbstractCegarLoop]: Abstraction has 8142 states and 10088 transitions. [2022-01-10 20:02:35,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 10088 transitions. [2022-01-10 20:02:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 20:02:35,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:35,339 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] [2022-01-10 20:02:35,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 20:02:35,339 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 22501287, now seen corresponding path program 1 times [2022-01-10 20:02:35,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:35,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849708725] [2022-01-10 20:02:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:35,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:35,367 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 20:02:35,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849708725] [2022-01-10 20:02:35,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849708725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:35,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:35,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:35,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001250262] [2022-01-10 20:02:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:35,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:35,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:35,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:35,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:35,368 INFO L87 Difference]: Start difference. First operand 8142 states and 10088 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:36,106 INFO L93 Difference]: Finished difference Result 18971 states and 23565 transitions. [2022-01-10 20:02:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:36,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 20:02:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:36,123 INFO L225 Difference]: With dead ends: 18971 [2022-01-10 20:02:36,123 INFO L226 Difference]: Without dead ends: 12995 [2022-01-10 20:02:36,131 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 20:02:36,131 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 395 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:36,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1005 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12995 states. [2022-01-10 20:02:36,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12995 to 12991. [2022-01-10 20:02:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12991 states, 12988 states have (on average 1.236910994764398) internal successors, (16065), 12990 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 16065 transitions. [2022-01-10 20:02:36,945 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 16065 transitions. Word has length 108 [2022-01-10 20:02:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:36,945 INFO L470 AbstractCegarLoop]: Abstraction has 12991 states and 16065 transitions. [2022-01-10 20:02:36,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 16065 transitions. [2022-01-10 20:02:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 20:02:36,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:36,950 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] [2022-01-10 20:02:36,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 20:02:36,950 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:36,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1176233978, now seen corresponding path program 1 times [2022-01-10 20:02:36,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:36,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993160911] [2022-01-10 20:02:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:36,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:36,984 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 20:02:36,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993160911] [2022-01-10 20:02:36,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993160911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:36,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:36,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:36,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494065915] [2022-01-10 20:02:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:36,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:36,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:36,986 INFO L87 Difference]: Start difference. First operand 12991 states and 16065 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:37,768 INFO L93 Difference]: Finished difference Result 23771 states and 29435 transitions. [2022-01-10 20:02:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:37,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 108 [2022-01-10 20:02:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:37,784 INFO L225 Difference]: With dead ends: 23771 [2022-01-10 20:02:37,784 INFO L226 Difference]: Without dead ends: 12946 [2022-01-10 20:02:37,794 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 20:02:37,795 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 403 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 663 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 20:02:37,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12946 states. [2022-01-10 20:02:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12946 to 12946. [2022-01-10 20:02:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12946 states, 12943 states have (on average 1.23734837363826) internal successors, (16015), 12945 states have internal predecessors, (16015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12946 states to 12946 states and 16015 transitions. [2022-01-10 20:02:38,596 INFO L78 Accepts]: Start accepts. Automaton has 12946 states and 16015 transitions. Word has length 108 [2022-01-10 20:02:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:38,596 INFO L470 AbstractCegarLoop]: Abstraction has 12946 states and 16015 transitions. [2022-01-10 20:02:38,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 12946 states and 16015 transitions. [2022-01-10 20:02:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 20:02:38,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:38,600 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] [2022-01-10 20:02:38,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 20:02:38,600 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:38,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:38,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1389049390, now seen corresponding path program 1 times [2022-01-10 20:02:38,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090377419] [2022-01-10 20:02:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:38,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:38,626 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 20:02:38,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:38,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090377419] [2022-01-10 20:02:38,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090377419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:38,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:38,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:38,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327241] [2022-01-10 20:02:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:38,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:38,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:38,628 INFO L87 Difference]: Start difference. First operand 12946 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:39,958 INFO L93 Difference]: Finished difference Result 33094 states and 40837 transitions. [2022-01-10 20:02:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 20:02:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:39,977 INFO L225 Difference]: With dead ends: 33094 [2022-01-10 20:02:39,977 INFO L226 Difference]: Without dead ends: 17674 [2022-01-10 20:02:39,990 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 20:02:39,990 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 332 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:39,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1384 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17674 states. [2022-01-10 20:02:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17674 to 17674. [2022-01-10 20:02:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17674 states, 17671 states have (on average 1.228792937581348) internal successors, (21714), 17673 states have internal predecessors, (21714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 21714 transitions. [2022-01-10 20:02:41,042 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 21714 transitions. Word has length 109 [2022-01-10 20:02:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:41,042 INFO L470 AbstractCegarLoop]: Abstraction has 17674 states and 21714 transitions. [2022-01-10 20:02:41,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 21714 transitions. [2022-01-10 20:02:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 20:02:41,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:41,046 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:41,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 20:02:41,047 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2087372408, now seen corresponding path program 1 times [2022-01-10 20:02:41,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:41,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676944348] [2022-01-10 20:02:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:41,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 20:02:41,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:41,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676944348] [2022-01-10 20:02:41,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676944348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:41,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:41,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:41,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223272694] [2022-01-10 20:02:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:41,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:41,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:41,075 INFO L87 Difference]: Start difference. First operand 17674 states and 21714 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:42,160 INFO L93 Difference]: Finished difference Result 20844 states and 25697 transitions. [2022-01-10 20:02:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 20:02:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:42,180 INFO L225 Difference]: With dead ends: 20844 [2022-01-10 20:02:42,180 INFO L226 Difference]: Without dead ends: 18989 [2022-01-10 20:02:42,185 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 20:02:42,185 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 513 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:42,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 628 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:42,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18989 states. [2022-01-10 20:02:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18989 to 18817. [2022-01-10 20:02:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18817 states, 18814 states have (on average 1.2302009142128203) internal successors, (23145), 18816 states have internal predecessors, (23145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18817 states to 18817 states and 23145 transitions. [2022-01-10 20:02:43,341 INFO L78 Accepts]: Start accepts. Automaton has 18817 states and 23145 transitions. Word has length 110 [2022-01-10 20:02:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:43,342 INFO L470 AbstractCegarLoop]: Abstraction has 18817 states and 23145 transitions. [2022-01-10 20:02:43,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18817 states and 23145 transitions. [2022-01-10 20:02:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 20:02:43,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:43,346 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:43,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 20:02:43,346 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash 326953728, now seen corresponding path program 1 times [2022-01-10 20:02:43,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:43,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594131529] [2022-01-10 20:02:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:43,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 20:02:43,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:43,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594131529] [2022-01-10 20:02:43,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594131529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:43,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:43,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:43,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171127320] [2022-01-10 20:02:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:43,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:43,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:43,372 INFO L87 Difference]: Start difference. First operand 18817 states and 23145 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:44,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:44,575 INFO L93 Difference]: Finished difference Result 21827 states and 26901 transitions. [2022-01-10 20:02:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:44,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2022-01-10 20:02:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:44,598 INFO L225 Difference]: With dead ends: 21827 [2022-01-10 20:02:44,598 INFO L226 Difference]: Without dead ends: 18833 [2022-01-10 20:02:44,607 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 20:02:44,607 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 69 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:44,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 934 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18833 states. [2022-01-10 20:02:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18833 to 18833. [2022-01-10 20:02:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 18830 states have (on average 1.2273499734466278) internal successors, (23111), 18832 states have internal predecessors, (23111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 23111 transitions. [2022-01-10 20:02:45,788 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 23111 transitions. Word has length 110 [2022-01-10 20:02:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:45,789 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 23111 transitions. [2022-01-10 20:02:45,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 23111 transitions. [2022-01-10 20:02:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 20:02:45,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:45,793 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:45,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 20:02:45,793 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 86413599, now seen corresponding path program 1 times [2022-01-10 20:02:45,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:45,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762634196] [2022-01-10 20:02:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:45,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 20:02:45,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:45,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762634196] [2022-01-10 20:02:45,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762634196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:45,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:45,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:45,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681313290] [2022-01-10 20:02:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:45,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:45,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:45,822 INFO L87 Difference]: Start difference. First operand 18833 states and 23111 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:46,879 INFO L93 Difference]: Finished difference Result 20301 states and 24908 transitions. [2022-01-10 20:02:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:46,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2022-01-10 20:02:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:46,902 INFO L225 Difference]: With dead ends: 20301 [2022-01-10 20:02:46,902 INFO L226 Difference]: Without dead ends: 17191 [2022-01-10 20:02:46,910 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 20:02:46,910 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 487 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:46,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 544 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17191 states. [2022-01-10 20:02:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17191 to 17092. [2022-01-10 20:02:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 17089 states have (on average 1.2248229855462578) internal successors, (20931), 17091 states have internal predecessors, (20931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 20931 transitions. [2022-01-10 20:02:48,028 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 20931 transitions. Word has length 110 [2022-01-10 20:02:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:48,028 INFO L470 AbstractCegarLoop]: Abstraction has 17092 states and 20931 transitions. [2022-01-10 20:02:48,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 20931 transitions. [2022-01-10 20:02:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 20:02:48,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:48,035 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] [2022-01-10 20:02:48,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 20:02:48,035 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:48,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1104844494, now seen corresponding path program 1 times [2022-01-10 20:02:48,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:48,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693548090] [2022-01-10 20:02:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:48,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:48,068 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 20:02:48,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:48,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693548090] [2022-01-10 20:02:48,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693548090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:48,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:02:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125203573] [2022-01-10 20:02:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:48,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:48,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:48,070 INFO L87 Difference]: Start difference. First operand 17092 states and 20931 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:49,500 INFO L93 Difference]: Finished difference Result 37234 states and 45567 transitions. [2022-01-10 20:02:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:49,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 20:02:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:49,526 INFO L225 Difference]: With dead ends: 37234 [2022-01-10 20:02:49,526 INFO L226 Difference]: Without dead ends: 21711 [2022-01-10 20:02:49,541 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 20:02:49,542 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 352 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:49,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 855 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21711 states. [2022-01-10 20:02:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21711 to 21615. [2022-01-10 20:02:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21615 states, 21612 states have (on average 1.2152970571904498) internal successors, (26265), 21614 states have internal predecessors, (26265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21615 states to 21615 states and 26265 transitions. [2022-01-10 20:02:50,951 INFO L78 Accepts]: Start accepts. Automaton has 21615 states and 26265 transitions. Word has length 140 [2022-01-10 20:02:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:50,951 INFO L470 AbstractCegarLoop]: Abstraction has 21615 states and 26265 transitions. [2022-01-10 20:02:50,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 21615 states and 26265 transitions. [2022-01-10 20:02:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 20:02:50,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:50,963 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:50,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 20:02:50,963 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 778947388, now seen corresponding path program 1 times [2022-01-10 20:02:50,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:50,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81755426] [2022-01-10 20:02:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:50,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 20:02:50,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:50,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81755426] [2022-01-10 20:02:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81755426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:50,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:50,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:50,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045309037] [2022-01-10 20:02:50,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:50,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:50,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:50,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:50,992 INFO L87 Difference]: Start difference. First operand 21615 states and 26265 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:52,401 INFO L93 Difference]: Finished difference Result 41227 states and 50047 transitions. [2022-01-10 20:02:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-10 20:02:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:52,426 INFO L225 Difference]: With dead ends: 41227 [2022-01-10 20:02:52,426 INFO L226 Difference]: Without dead ends: 21195 [2022-01-10 20:02:52,445 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 20:02:52,445 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 390 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:52,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 875 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21195 states. [2022-01-10 20:02:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21195 to 21195. [2022-01-10 20:02:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21195 states, 21192 states have (on average 1.1948376745941864) internal successors, (25321), 21194 states have internal predecessors, (25321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 25321 transitions. [2022-01-10 20:02:53,814 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 25321 transitions. Word has length 157 [2022-01-10 20:02:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:53,815 INFO L470 AbstractCegarLoop]: Abstraction has 21195 states and 25321 transitions. [2022-01-10 20:02:53,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 25321 transitions. [2022-01-10 20:02:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 20:02:53,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:53,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 20:02:53,825 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1427271145, now seen corresponding path program 1 times [2022-01-10 20:02:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98257373] [2022-01-10 20:02:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:53,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:02:53,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:53,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98257373] [2022-01-10 20:02:53,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98257373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:53,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:53,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:53,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941160796] [2022-01-10 20:02:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:53,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:53,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:53,858 INFO L87 Difference]: Start difference. First operand 21195 states and 25321 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:55,219 INFO L93 Difference]: Finished difference Result 36371 states and 43633 transitions. [2022-01-10 20:02:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:55,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 20:02:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:55,247 INFO L225 Difference]: With dead ends: 36371 [2022-01-10 20:02:55,247 INFO L226 Difference]: Without dead ends: 21199 [2022-01-10 20:02:55,263 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 20:02:55,263 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 288 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:55,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1302 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21199 states. [2022-01-10 20:02:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21199 to 21195. [2022-01-10 20:02:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21195 states, 21192 states have (on average 1.1920064175160439) internal successors, (25261), 21194 states have internal predecessors, (25261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 25261 transitions. [2022-01-10 20:02:56,753 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 25261 transitions. Word has length 158 [2022-01-10 20:02:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:56,753 INFO L470 AbstractCegarLoop]: Abstraction has 21195 states and 25261 transitions. [2022-01-10 20:02:56,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 25261 transitions. [2022-01-10 20:02:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 20:02:56,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:56,761 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:56,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 20:02:56,762 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1471697368, now seen corresponding path program 1 times [2022-01-10 20:02:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:56,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438202820] [2022-01-10 20:02:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:56,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 20:02:56,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:56,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438202820] [2022-01-10 20:02:56,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438202820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:56,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:56,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:56,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859921154] [2022-01-10 20:02:56,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:56,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:56,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:56,794 INFO L87 Difference]: Start difference. First operand 21195 states and 25261 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:02:58,139 INFO L93 Difference]: Finished difference Result 22578 states and 26908 transitions. [2022-01-10 20:02:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:02:58,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 162 [2022-01-10 20:02:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:02:58,163 INFO L225 Difference]: With dead ends: 22578 [2022-01-10 20:02:58,163 INFO L226 Difference]: Without dead ends: 21164 [2022-01-10 20:02:58,167 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 20:02:58,168 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 69 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:02:58,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1059 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:02:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21164 states. [2022-01-10 20:02:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21164 to 21161. [2022-01-10 20:02:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21161 states, 21158 states have (on average 1.1904244257491257) internal successors, (25187), 21160 states have internal predecessors, (25187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21161 states to 21161 states and 25187 transitions. [2022-01-10 20:02:59,497 INFO L78 Accepts]: Start accepts. Automaton has 21161 states and 25187 transitions. Word has length 162 [2022-01-10 20:02:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:02:59,497 INFO L470 AbstractCegarLoop]: Abstraction has 21161 states and 25187 transitions. [2022-01-10 20:02:59,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:02:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 21161 states and 25187 transitions. [2022-01-10 20:02:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 20:02:59,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:02:59,506 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:02:59,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 20:02:59,506 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:02:59,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:02:59,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1983166166, now seen corresponding path program 1 times [2022-01-10 20:02:59,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:02:59,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670703569] [2022-01-10 20:02:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:02:59,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:02:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:02:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-10 20:02:59,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:02:59,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670703569] [2022-01-10 20:02:59,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670703569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:02:59,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:02:59,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:02:59,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757712870] [2022-01-10 20:02:59,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:02:59,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:02:59,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:02:59,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:02:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:02:59,595 INFO L87 Difference]: Start difference. First operand 21161 states and 25187 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:00,826 INFO L93 Difference]: Finished difference Result 22228 states and 26410 transitions. [2022-01-10 20:03:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:00,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 164 [2022-01-10 20:03:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:00,853 INFO L225 Difference]: With dead ends: 22228 [2022-01-10 20:03:00,853 INFO L226 Difference]: Without dead ends: 20397 [2022-01-10 20:03:00,861 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 20:03:00,862 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 6 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:00,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1057 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20397 states. [2022-01-10 20:03:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20397 to 20389. [2022-01-10 20:03:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20389 states, 20386 states have (on average 1.1899342686157166) internal successors, (24258), 20388 states have internal predecessors, (24258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20389 states to 20389 states and 24258 transitions. [2022-01-10 20:03:02,173 INFO L78 Accepts]: Start accepts. Automaton has 20389 states and 24258 transitions. Word has length 164 [2022-01-10 20:03:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:02,174 INFO L470 AbstractCegarLoop]: Abstraction has 20389 states and 24258 transitions. [2022-01-10 20:03:02,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20389 states and 24258 transitions. [2022-01-10 20:03:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 20:03:02,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:02,181 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:02,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 20:03:02,182 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1181014505, now seen corresponding path program 1 times [2022-01-10 20:03:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:02,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685035310] [2022-01-10 20:03:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:02,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 20:03:02,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:02,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685035310] [2022-01-10 20:03:02,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685035310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:02,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:02,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:02,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438815431] [2022-01-10 20:03:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:02,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:02,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:02,212 INFO L87 Difference]: Start difference. First operand 20389 states and 24258 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:03,373 INFO L93 Difference]: Finished difference Result 20392 states and 24261 transitions. [2022-01-10 20:03:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 164 [2022-01-10 20:03:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:03,395 INFO L225 Difference]: With dead ends: 20392 [2022-01-10 20:03:03,395 INFO L226 Difference]: Without dead ends: 19665 [2022-01-10 20:03:03,401 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 20:03:03,402 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 407 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:03,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 573 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19665 states. [2022-01-10 20:03:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19665 to 19665. [2022-01-10 20:03:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19665 states, 19663 states have (on average 1.1930020851345167) internal successors, (23458), 19664 states have internal predecessors, (23458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19665 states to 19665 states and 23458 transitions. [2022-01-10 20:03:04,674 INFO L78 Accepts]: Start accepts. Automaton has 19665 states and 23458 transitions. Word has length 164 [2022-01-10 20:03:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:04,675 INFO L470 AbstractCegarLoop]: Abstraction has 19665 states and 23458 transitions. [2022-01-10 20:03:04,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 19665 states and 23458 transitions. [2022-01-10 20:03:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 20:03:04,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:04,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:04,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-10 20:03:04,684 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1163619447, now seen corresponding path program 1 times [2022-01-10 20:03:04,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:04,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438521058] [2022-01-10 20:03:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:04,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 20:03:04,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438521058] [2022-01-10 20:03:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438521058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:04,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:03:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992898480] [2022-01-10 20:03:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:04,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:04,725 INFO L87 Difference]: Start difference. First operand 19665 states and 23458 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:06,253 INFO L93 Difference]: Finished difference Result 43353 states and 51585 transitions. [2022-01-10 20:03:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:06,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 189 [2022-01-10 20:03:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:06,284 INFO L225 Difference]: With dead ends: 43353 [2022-01-10 20:03:06,284 INFO L226 Difference]: Without dead ends: 23720 [2022-01-10 20:03:06,303 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 20:03:06,304 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 179 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:06,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 735 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23720 states. [2022-01-10 20:03:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23720 to 23592. [2022-01-10 20:03:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23592 states, 23590 states have (on average 1.183891479440441) internal successors, (27928), 23591 states have internal predecessors, (27928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23592 states to 23592 states and 27928 transitions. [2022-01-10 20:03:07,858 INFO L78 Accepts]: Start accepts. Automaton has 23592 states and 27928 transitions. Word has length 189 [2022-01-10 20:03:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:07,858 INFO L470 AbstractCegarLoop]: Abstraction has 23592 states and 27928 transitions. [2022-01-10 20:03:07,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 23592 states and 27928 transitions. [2022-01-10 20:03:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 20:03:07,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:07,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:07,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-10 20:03:07,871 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1669477115, now seen corresponding path program 1 times [2022-01-10 20:03:07,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:07,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932669631] [2022-01-10 20:03:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:07,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:03:07,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:07,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932669631] [2022-01-10 20:03:07,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932669631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:07,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:07,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:07,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703666986] [2022-01-10 20:03:07,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:07,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:07,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:07,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:07,906 INFO L87 Difference]: Start difference. First operand 23592 states and 27928 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:09,500 INFO L93 Difference]: Finished difference Result 43208 states and 51332 transitions. [2022-01-10 20:03:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:09,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2022-01-10 20:03:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:09,532 INFO L225 Difference]: With dead ends: 43208 [2022-01-10 20:03:09,532 INFO L226 Difference]: Without dead ends: 23596 [2022-01-10 20:03:09,552 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 20:03:09,553 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 280 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:09,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1035 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23596 states. [2022-01-10 20:03:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23596 to 23592. [2022-01-10 20:03:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23592 states, 23590 states have (on average 1.179652395082662) internal successors, (27828), 23591 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23592 states to 23592 states and 27828 transitions. [2022-01-10 20:03:11,153 INFO L78 Accepts]: Start accepts. Automaton has 23592 states and 27828 transitions. Word has length 193 [2022-01-10 20:03:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:11,154 INFO L470 AbstractCegarLoop]: Abstraction has 23592 states and 27828 transitions. [2022-01-10 20:03:11,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 23592 states and 27828 transitions. [2022-01-10 20:03:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 20:03:11,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:11,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:11,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-10 20:03:11,165 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1845833031, now seen corresponding path program 1 times [2022-01-10 20:03:11,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:11,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14548921] [2022-01-10 20:03:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:11,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:03:11,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14548921] [2022-01-10 20:03:11,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14548921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:11,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:11,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:11,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893360110] [2022-01-10 20:03:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:11,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:11,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:11,198 INFO L87 Difference]: Start difference. First operand 23592 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:12,842 INFO L93 Difference]: Finished difference Result 43268 states and 51194 transitions. [2022-01-10 20:03:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2022-01-10 20:03:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:12,874 INFO L225 Difference]: With dead ends: 43268 [2022-01-10 20:03:12,875 INFO L226 Difference]: Without dead ends: 23656 [2022-01-10 20:03:12,895 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 20:03:12,895 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 313 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:12,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 898 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23656 states. [2022-01-10 20:03:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23656 to 23592. [2022-01-10 20:03:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23592 states, 23590 states have (on average 1.1579482831708352) internal successors, (27316), 23591 states have internal predecessors, (27316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23592 states to 23592 states and 27316 transitions. [2022-01-10 20:03:14,544 INFO L78 Accepts]: Start accepts. Automaton has 23592 states and 27316 transitions. Word has length 193 [2022-01-10 20:03:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:14,544 INFO L470 AbstractCegarLoop]: Abstraction has 23592 states and 27316 transitions. [2022-01-10 20:03:14,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 23592 states and 27316 transitions. [2022-01-10 20:03:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 20:03:14,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:14,555 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:14,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-10 20:03:14,555 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -734560598, now seen corresponding path program 1 times [2022-01-10 20:03:14,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:14,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774981080] [2022-01-10 20:03:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:14,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:03:14,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:14,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774981080] [2022-01-10 20:03:14,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774981080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:14,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:14,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118854588] [2022-01-10 20:03:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:14,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:14,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:14,604 INFO L87 Difference]: Start difference. First operand 23592 states and 27316 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:16,208 INFO L93 Difference]: Finished difference Result 40770 states and 47390 transitions. [2022-01-10 20:03:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:16,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-01-10 20:03:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:16,241 INFO L225 Difference]: With dead ends: 40770 [2022-01-10 20:03:16,241 INFO L226 Difference]: Without dead ends: 23656 [2022-01-10 20:03:16,259 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 20:03:16,260 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 309 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:16,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 978 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23656 states. [2022-01-10 20:03:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23656 to 23592. [2022-01-10 20:03:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23592 states, 23590 states have (on average 1.1398050021195423) internal successors, (26888), 23591 states have internal predecessors, (26888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23592 states to 23592 states and 26888 transitions. [2022-01-10 20:03:17,893 INFO L78 Accepts]: Start accepts. Automaton has 23592 states and 26888 transitions. Word has length 196 [2022-01-10 20:03:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 23592 states and 26888 transitions. [2022-01-10 20:03:17,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 23592 states and 26888 transitions. [2022-01-10 20:03:17,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-10 20:03:17,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:17,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:17,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-10 20:03:17,906 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1219471349, now seen corresponding path program 1 times [2022-01-10 20:03:17,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:17,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895114851] [2022-01-10 20:03:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:17,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 20:03:17,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895114851] [2022-01-10 20:03:17,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895114851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:17,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:17,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:03:17,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401656933] [2022-01-10 20:03:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:03:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:03:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:03:17,939 INFO L87 Difference]: Start difference. First operand 23592 states and 26888 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:19,657 INFO L93 Difference]: Finished difference Result 38918 states and 44532 transitions. [2022-01-10 20:03:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:03:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 198 [2022-01-10 20:03:19,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:19,686 INFO L225 Difference]: With dead ends: 38918 [2022-01-10 20:03:19,686 INFO L226 Difference]: Without dead ends: 24440 [2022-01-10 20:03:19,702 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 20:03:19,703 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 328 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:19,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 944 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:03:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24440 states. [2022-01-10 20:03:21,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24440 to 23592. [2022-01-10 20:03:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23592 states, 23590 states have (on average 1.1255616786774056) internal successors, (26552), 23591 states have internal predecessors, (26552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23592 states to 23592 states and 26552 transitions. [2022-01-10 20:03:21,333 INFO L78 Accepts]: Start accepts. Automaton has 23592 states and 26552 transitions. Word has length 198 [2022-01-10 20:03:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:03:21,334 INFO L470 AbstractCegarLoop]: Abstraction has 23592 states and 26552 transitions. [2022-01-10 20:03:21,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 23592 states and 26552 transitions. [2022-01-10 20:03:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-01-10 20:03:21,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:03:21,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:03:21,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-10 20:03:21,345 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 20:03:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:03:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash -305372586, now seen corresponding path program 1 times [2022-01-10 20:03:21,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:03:21,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573660680] [2022-01-10 20:03:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:03:21,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:03:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:03:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 20:03:21,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:03:21,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573660680] [2022-01-10 20:03:21,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573660680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:03:21,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:03:21,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:03:21,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615807689] [2022-01-10 20:03:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:03:21,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:03:21,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:03:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:03:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:03:21,396 INFO L87 Difference]: Start difference. First operand 23592 states and 26552 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:03:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:03:23,594 INFO L93 Difference]: Finished difference Result 50580 states and 56931 transitions. [2022-01-10 20:03:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:03:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 199 [2022-01-10 20:03:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:03:23,628 INFO L225 Difference]: With dead ends: 50580 [2022-01-10 20:03:23,629 INFO L226 Difference]: Without dead ends: 27018 [2022-01-10 20:03:23,646 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 20:03:23,647 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1010 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:03:23,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 923 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:03:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27018 states.