/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:19:16,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:19:16,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:19:16,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:19:16,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:19:16,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:19:16,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:19:16,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:19:16,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:19:16,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:19:16,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:19:16,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:19:16,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:19:16,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:19:16,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:19:16,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:19:16,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:19:16,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:19:16,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:19:16,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:19:16,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:19:16,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:19:16,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:19:16,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:19:16,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:19:16,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:19:16,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:19:16,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:19:16,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:19:16,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:19:16,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:19:16,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:19:16,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:19:16,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:19:16,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:19:16,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:19:16,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:19:16,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:19:16,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:19:16,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:19:16,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:19:16,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:19:16,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:19:16,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:19:16,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:19:16,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:19:16,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:19:16,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:19:16,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:19:16,536 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:19:16,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:19:16,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:19:16,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:19:16,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:19:16,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:19:16,543 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:19:16,543 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:19:16,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:19:16,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:19:16,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:19:16,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:19:16,779 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:19:16,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-01-11 06:19:16,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83957e6c/13b36321e2cc423886b4691e10070b2d/FLAGe28c4b8f5 [2022-01-11 06:19:17,398 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:19:17,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-01-11 06:19:17,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83957e6c/13b36321e2cc423886b4691e10070b2d/FLAGe28c4b8f5 [2022-01-11 06:19:17,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83957e6c/13b36321e2cc423886b4691e10070b2d [2022-01-11 06:19:17,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:19:17,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:19:17,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:19:17,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:19:17,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:19:17,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:19:17" (1/1) ... [2022-01-11 06:19:17,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766dab6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:17, skipping insertion in model container [2022-01-11 06:19:17,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:19:17" (1/1) ... [2022-01-11 06:19:17,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:19:17,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:19:18,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-01-11 06:19:18,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:19:18,317 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:19:18,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-01-11 06:19:18,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:19:18,480 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:19:18,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18 WrapperNode [2022-01-11 06:19:18,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:19:18,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:19:18,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:19:18,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:19:18,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,600 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2106 [2022-01-11 06:19:18,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:19:18,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:19:18,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:19:18,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:19:18,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:19:18,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:19:18,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:19:18,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:19:18,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (1/1) ... [2022-01-11 06:19:18,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:19:18,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:19:18,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:19:18,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:19:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:19:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:19:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:19:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:19:19,011 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:19:19,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:19:20,230 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:19:20,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:19:20,249 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:19:20,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:19:20 BoogieIcfgContainer [2022-01-11 06:19:20,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:19:20,253 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:19:20,253 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:19:20,254 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:19:20,257 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:19:20" (1/1) ... [2022-01-11 06:19:20,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:19:20 BasicIcfg [2022-01-11 06:19:20,967 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:19:20,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:19:20,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:19:20,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:19:20,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:19:17" (1/4) ... [2022-01-11 06:19:20,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422001c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:19:20, skipping insertion in model container [2022-01-11 06:19:20,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:19:18" (2/4) ... [2022-01-11 06:19:20,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422001c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:19:20, skipping insertion in model container [2022-01-11 06:19:20,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:19:20" (3/4) ... [2022-01-11 06:19:20,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422001c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:19:20, skipping insertion in model container [2022-01-11 06:19:20,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:19:20" (4/4) ... [2022-01-11 06:19:20,976 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 06:19:20,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:19:20,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:19:21,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:19:21,040 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:19:21,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:19:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 746 states, 744 states have (on average 1.8454301075268817) internal successors, (1373), 745 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-11 06:19:21,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:21,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:21,089 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash -265039464, now seen corresponding path program 1 times [2022-01-11 06:19:21,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131462327] [2022-01-11 06:19:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:21,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:21,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131462327] [2022-01-11 06:19:21,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131462327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:21,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:21,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:19:21,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176544673] [2022-01-11 06:19:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:21,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:19:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:19:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:19:21,663 INFO L87 Difference]: Start difference. First operand has 746 states, 744 states have (on average 1.8454301075268817) internal successors, (1373), 745 states have internal predecessors, (1373), 0 states have call successors, (0), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:21,736 INFO L93 Difference]: Finished difference Result 938 states and 1707 transitions. [2022-01-11 06:19:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:19:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-11 06:19:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:21,765 INFO L225 Difference]: With dead ends: 938 [2022-01-11 06:19:21,765 INFO L226 Difference]: Without dead ends: 742 [2022-01-11 06:19:21,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:19:21,773 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:21,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-11 06:19:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2022-01-11 06:19:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.843454790823212) internal successors, (1366), 741 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1366 transitions. [2022-01-11 06:19:21,866 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1366 transitions. Word has length 153 [2022-01-11 06:19:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:21,866 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1366 transitions. [2022-01-11 06:19:21,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1366 transitions. [2022-01-11 06:19:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-11 06:19:21,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:21,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:21,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:19:21,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -519776009, now seen corresponding path program 1 times [2022-01-11 06:19:21,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:21,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340732706] [2022-01-11 06:19:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:21,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:22,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:22,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340732706] [2022-01-11 06:19:22,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340732706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:22,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:22,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:19:22,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24808261] [2022-01-11 06:19:22,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:22,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:19:22,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:19:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:22,375 INFO L87 Difference]: Start difference. First operand 742 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:22,524 INFO L93 Difference]: Finished difference Result 937 states and 1700 transitions. [2022-01-11 06:19:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:19:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-11 06:19:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:22,531 INFO L225 Difference]: With dead ends: 937 [2022-01-11 06:19:22,531 INFO L226 Difference]: Without dead ends: 742 [2022-01-11 06:19:22,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:19:22,541 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 3 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5388 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-11 06:19:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2022-01-11 06:19:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.7557354925775979) internal successors, (1301), 741 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1301 transitions. [2022-01-11 06:19:22,575 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1301 transitions. Word has length 153 [2022-01-11 06:19:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:22,576 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1301 transitions. [2022-01-11 06:19:22,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1301 transitions. [2022-01-11 06:19:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-11 06:19:22,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:22,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:22,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:19:22,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash -481541619, now seen corresponding path program 1 times [2022-01-11 06:19:22,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:22,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517769480] [2022-01-11 06:19:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:22,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:22,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:22,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517769480] [2022-01-11 06:19:22,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517769480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:22,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005074833] [2022-01-11 06:19:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:22,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:22,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:22,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:22,990 INFO L87 Difference]: Start difference. First operand 742 states and 1301 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:23,056 INFO L93 Difference]: Finished difference Result 1110 states and 1935 transitions. [2022-01-11 06:19:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:23,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2022-01-11 06:19:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:23,062 INFO L225 Difference]: With dead ends: 1110 [2022-01-11 06:19:23,062 INFO L226 Difference]: Without dead ends: 919 [2022-01-11 06:19:23,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:23,069 INFO L933 BasicCegarLoop]: 1294 mSDtfsCounter, 295 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:23,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2524 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-01-11 06:19:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2022-01-11 06:19:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 1.7453551912568306) internal successors, (1597), 915 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1597 transitions. [2022-01-11 06:19:23,129 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1597 transitions. Word has length 217 [2022-01-11 06:19:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:23,130 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1597 transitions. [2022-01-11 06:19:23,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1597 transitions. [2022-01-11 06:19:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-11 06:19:23,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:23,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:23,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:19:23,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1304078614, now seen corresponding path program 1 times [2022-01-11 06:19:23,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:23,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326273047] [2022-01-11 06:19:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:23,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:23,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:23,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326273047] [2022-01-11 06:19:23,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326273047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:23,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:23,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:19:23,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348655287] [2022-01-11 06:19:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:23,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:19:23,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:19:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:19:23,434 INFO L87 Difference]: Start difference. First operand 916 states and 1597 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:23,594 INFO L93 Difference]: Finished difference Result 2651 states and 4612 transitions. [2022-01-11 06:19:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:19:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2022-01-11 06:19:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:23,604 INFO L225 Difference]: With dead ends: 2651 [2022-01-11 06:19:23,604 INFO L226 Difference]: Without dead ends: 1812 [2022-01-11 06:19:23,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:23,612 INFO L933 BasicCegarLoop]: 1271 mSDtfsCounter, 3643 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3643 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:23,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3643 Valid, 2527 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2022-01-11 06:19:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1810. [2022-01-11 06:19:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1809 states have (on average 1.7379767827529022) internal successors, (3144), 1809 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 3144 transitions. [2022-01-11 06:19:23,682 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 3144 transitions. Word has length 221 [2022-01-11 06:19:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:23,683 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 3144 transitions. [2022-01-11 06:19:23,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 3144 transitions. [2022-01-11 06:19:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-11 06:19:23,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:23,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:23,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:19:23,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1907620308, now seen corresponding path program 1 times [2022-01-11 06:19:23,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:23,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586500796] [2022-01-11 06:19:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:23,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:23,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:23,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586500796] [2022-01-11 06:19:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586500796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:23,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:23,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:23,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120206543] [2022-01-11 06:19:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:23,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:23,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:23,898 INFO L87 Difference]: Start difference. First operand 1810 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:23,979 INFO L93 Difference]: Finished difference Result 2886 states and 4996 transitions. [2022-01-11 06:19:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:23,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2022-01-11 06:19:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:23,989 INFO L225 Difference]: With dead ends: 2886 [2022-01-11 06:19:23,989 INFO L226 Difference]: Without dead ends: 2166 [2022-01-11 06:19:23,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:23,991 INFO L933 BasicCegarLoop]: 1312 mSDtfsCounter, 316 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:23,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2581 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-01-11 06:19:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2142. [2022-01-11 06:19:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2141 states have (on average 1.73190098085007) internal successors, (3708), 2141 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3708 transitions. [2022-01-11 06:19:24,061 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3708 transitions. Word has length 222 [2022-01-11 06:19:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:24,062 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 3708 transitions. [2022-01-11 06:19:24,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3708 transitions. [2022-01-11 06:19:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-11 06:19:24,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:24,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:24,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:19:24,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1113263579, now seen corresponding path program 1 times [2022-01-11 06:19:24,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:24,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425483282] [2022-01-11 06:19:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:24,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:24,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:24,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425483282] [2022-01-11 06:19:24,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425483282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:24,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:24,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:19:24,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420143447] [2022-01-11 06:19:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:24,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:19:24,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:19:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:24,327 INFO L87 Difference]: Start difference. First operand 2142 states and 3708 transitions. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:24,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:24,583 INFO L93 Difference]: Finished difference Result 6370 states and 11027 transitions. [2022-01-11 06:19:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:19:24,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2022-01-11 06:19:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:24,603 INFO L225 Difference]: With dead ends: 6370 [2022-01-11 06:19:24,603 INFO L226 Difference]: Without dead ends: 4242 [2022-01-11 06:19:24,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:24,611 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 4875 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4875 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:24,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4875 Valid, 2549 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2022-01-11 06:19:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 4240. [2022-01-11 06:19:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 4239 states have (on average 1.7237556027364944) internal successors, (7307), 4239 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 7307 transitions. [2022-01-11 06:19:24,781 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 7307 transitions. Word has length 223 [2022-01-11 06:19:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:24,782 INFO L470 AbstractCegarLoop]: Abstraction has 4240 states and 7307 transitions. [2022-01-11 06:19:24,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 7307 transitions. [2022-01-11 06:19:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-11 06:19:24,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:24,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:24,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:19:24,792 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash 450258712, now seen corresponding path program 1 times [2022-01-11 06:19:24,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:24,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979334954] [2022-01-11 06:19:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:24,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:24,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:24,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979334954] [2022-01-11 06:19:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979334954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:24,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:24,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:24,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669967180] [2022-01-11 06:19:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:24,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:24,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:24,979 INFO L87 Difference]: Start difference. First operand 4240 states and 7307 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:25,123 INFO L93 Difference]: Finished difference Result 6280 states and 10817 transitions. [2022-01-11 06:19:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2022-01-11 06:19:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:25,188 INFO L225 Difference]: With dead ends: 6280 [2022-01-11 06:19:25,188 INFO L226 Difference]: Without dead ends: 4874 [2022-01-11 06:19:25,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:25,192 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 302 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:25,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2022-01-11 06:19:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4872. [2022-01-11 06:19:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4871 states have (on average 1.7226442208991994) internal successors, (8391), 4871 states have internal predecessors, (8391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 8391 transitions. [2022-01-11 06:19:25,397 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 8391 transitions. Word has length 224 [2022-01-11 06:19:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:25,398 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 8391 transitions. [2022-01-11 06:19:25,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 8391 transitions. [2022-01-11 06:19:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-11 06:19:25,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:25,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:25,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:19:25,406 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1918734792, now seen corresponding path program 1 times [2022-01-11 06:19:25,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014614608] [2022-01-11 06:19:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:25,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:25,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014614608] [2022-01-11 06:19:25,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014614608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:25,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:25,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:19:25,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139334711] [2022-01-11 06:19:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:25,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:19:25,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:19:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:19:25,611 INFO L87 Difference]: Start difference. First operand 4872 states and 8391 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:26,105 INFO L93 Difference]: Finished difference Result 14385 states and 24763 transitions. [2022-01-11 06:19:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:19:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2022-01-11 06:19:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:26,163 INFO L225 Difference]: With dead ends: 14385 [2022-01-11 06:19:26,163 INFO L226 Difference]: Without dead ends: 9679 [2022-01-11 06:19:26,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:26,176 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 3308 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3308 Valid, 2859 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9679 states. [2022-01-11 06:19:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9679 to 9677. [2022-01-11 06:19:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9677 states, 9676 states have (on average 1.7163083918974782) internal successors, (16607), 9676 states have internal predecessors, (16607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9677 states to 9677 states and 16607 transitions. [2022-01-11 06:19:26,657 INFO L78 Accepts]: Start accepts. Automaton has 9677 states and 16607 transitions. Word has length 226 [2022-01-11 06:19:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:26,658 INFO L470 AbstractCegarLoop]: Abstraction has 9677 states and 16607 transitions. [2022-01-11 06:19:26,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 9677 states and 16607 transitions. [2022-01-11 06:19:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-01-11 06:19:26,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:26,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:26,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:19:26,671 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1901442831, now seen corresponding path program 1 times [2022-01-11 06:19:26,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:26,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613367740] [2022-01-11 06:19:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:26,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:26,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:26,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613367740] [2022-01-11 06:19:26,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613367740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:26,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:26,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:19:26,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565655754] [2022-01-11 06:19:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:26,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:19:26,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:26,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:19:26,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:19:26,865 INFO L87 Difference]: Start difference. First operand 9677 states and 16607 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:27,600 INFO L93 Difference]: Finished difference Result 28652 states and 49161 transitions. [2022-01-11 06:19:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:19:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2022-01-11 06:19:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:27,654 INFO L225 Difference]: With dead ends: 28652 [2022-01-11 06:19:27,654 INFO L226 Difference]: Without dead ends: 19036 [2022-01-11 06:19:27,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:27,680 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 3279 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:27,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3279 Valid, 2847 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19036 states. [2022-01-11 06:19:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19036 to 19034. [2022-01-11 06:19:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19034 states, 19033 states have (on average 1.7081384962959072) internal successors, (32511), 19033 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19034 states to 19034 states and 32511 transitions. [2022-01-11 06:19:28,665 INFO L78 Accepts]: Start accepts. Automaton has 19034 states and 32511 transitions. Word has length 228 [2022-01-11 06:19:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:28,666 INFO L470 AbstractCegarLoop]: Abstraction has 19034 states and 32511 transitions. [2022-01-11 06:19:28,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 19034 states and 32511 transitions. [2022-01-11 06:19:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-11 06:19:28,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:28,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:28,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:19:28,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash 417793990, now seen corresponding path program 1 times [2022-01-11 06:19:28,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:28,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308033963] [2022-01-11 06:19:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:28,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:28,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:28,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308033963] [2022-01-11 06:19:28,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308033963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:28,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:28,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:28,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673444111] [2022-01-11 06:19:28,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:28,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:28,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:28,991 INFO L87 Difference]: Start difference. First operand 19034 states and 32511 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:29,775 INFO L93 Difference]: Finished difference Result 39275 states and 66861 transitions. [2022-01-11 06:19:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2022-01-11 06:19:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:29,847 INFO L225 Difference]: With dead ends: 39275 [2022-01-11 06:19:29,848 INFO L226 Difference]: Without dead ends: 28792 [2022-01-11 06:19:29,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:29,876 INFO L933 BasicCegarLoop]: 1312 mSDtfsCounter, 292 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2551 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 [2022-01-11 06:19:29,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2551 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28792 states. [2022-01-11 06:19:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28792 to 28727. [2022-01-11 06:19:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28727 states, 28726 states have (on average 1.7005500243681682) internal successors, (48850), 28726 states have internal predecessors, (48850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 48850 transitions. [2022-01-11 06:19:30,962 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 48850 transitions. Word has length 230 [2022-01-11 06:19:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:30,963 INFO L470 AbstractCegarLoop]: Abstraction has 28727 states and 48850 transitions. [2022-01-11 06:19:30,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 48850 transitions. [2022-01-11 06:19:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-11 06:19:30,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:30,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:30,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:19:30,990 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1822942150, now seen corresponding path program 1 times [2022-01-11 06:19:30,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:30,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813775677] [2022-01-11 06:19:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:30,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:31,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813775677] [2022-01-11 06:19:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813775677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:31,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:31,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:31,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061251739] [2022-01-11 06:19:31,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:31,180 INFO L87 Difference]: Start difference. First operand 28727 states and 48850 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:32,740 INFO L93 Difference]: Finished difference Result 82951 states and 140738 transitions. [2022-01-11 06:19:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2022-01-11 06:19:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:32,850 INFO L225 Difference]: With dead ends: 82951 [2022-01-11 06:19:32,850 INFO L226 Difference]: Without dead ends: 56087 [2022-01-11 06:19:32,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:32,889 INFO L933 BasicCegarLoop]: 2466 mSDtfsCounter, 1045 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:32,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 3736 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56087 states. [2022-01-11 06:19:34,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56087 to 56085. [2022-01-11 06:19:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56085 states, 56084 states have (on average 1.6918372441337992) internal successors, (94885), 56084 states have internal predecessors, (94885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56085 states to 56085 states and 94885 transitions. [2022-01-11 06:19:34,767 INFO L78 Accepts]: Start accepts. Automaton has 56085 states and 94885 transitions. Word has length 234 [2022-01-11 06:19:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:34,767 INFO L470 AbstractCegarLoop]: Abstraction has 56085 states and 94885 transitions. [2022-01-11 06:19:34,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 56085 states and 94885 transitions. [2022-01-11 06:19:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-11 06:19:34,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:34,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:34,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:19:34,812 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -391059007, now seen corresponding path program 1 times [2022-01-11 06:19:34,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:34,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714147926] [2022-01-11 06:19:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:34,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:35,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:35,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714147926] [2022-01-11 06:19:35,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714147926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:35,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:35,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:19:35,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370429791] [2022-01-11 06:19:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:35,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:19:35,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:19:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:19:35,030 INFO L87 Difference]: Start difference. First operand 56085 states and 94885 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:38,059 INFO L93 Difference]: Finished difference Result 165701 states and 280211 transitions. [2022-01-11 06:19:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:19:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-11 06:19:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:38,356 INFO L225 Difference]: With dead ends: 165701 [2022-01-11 06:19:38,357 INFO L226 Difference]: Without dead ends: 110783 [2022-01-11 06:19:38,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:19:38,424 INFO L933 BasicCegarLoop]: 1271 mSDtfsCounter, 3505 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:38,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3505 Valid, 2527 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110783 states. [2022-01-11 06:19:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110783 to 110781. [2022-01-11 06:19:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110781 states, 110780 states have (on average 1.6863784076548114) internal successors, (186817), 110780 states have internal predecessors, (186817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110781 states to 110781 states and 186817 transitions. [2022-01-11 06:19:42,082 INFO L78 Accepts]: Start accepts. Automaton has 110781 states and 186817 transitions. Word has length 235 [2022-01-11 06:19:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:42,083 INFO L470 AbstractCegarLoop]: Abstraction has 110781 states and 186817 transitions. [2022-01-11 06:19:42,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 110781 states and 186817 transitions. [2022-01-11 06:19:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-11 06:19:42,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:42,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:42,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:19:42,148 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -232287174, now seen corresponding path program 1 times [2022-01-11 06:19:42,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:42,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840824520] [2022-01-11 06:19:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:42,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:42,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:42,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840824520] [2022-01-11 06:19:42,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840824520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:42,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:42,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826079932] [2022-01-11 06:19:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:42,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:42,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:42,526 INFO L87 Difference]: Start difference. First operand 110781 states and 186817 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:45,725 INFO L93 Difference]: Finished difference Result 228395 states and 385249 transitions. [2022-01-11 06:19:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:45,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2022-01-11 06:19:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:46,044 INFO L225 Difference]: With dead ends: 228395 [2022-01-11 06:19:46,044 INFO L226 Difference]: Without dead ends: 149525 [2022-01-11 06:19:46,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:46,121 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 302 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:46,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2583 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:19:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149525 states. [2022-01-11 06:19:50,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149525 to 146875. [2022-01-11 06:19:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146875 states, 146874 states have (on average 1.677676103326661) internal successors, (246407), 146874 states have internal predecessors, (246407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146875 states to 146875 states and 246407 transitions. [2022-01-11 06:19:50,897 INFO L78 Accepts]: Start accepts. Automaton has 146875 states and 246407 transitions. Word has length 236 [2022-01-11 06:19:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:19:50,897 INFO L470 AbstractCegarLoop]: Abstraction has 146875 states and 246407 transitions. [2022-01-11 06:19:50,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 146875 states and 246407 transitions. [2022-01-11 06:19:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-11 06:19:50,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:19:50,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:19:50,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:19:50,977 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:19:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:19:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 368418698, now seen corresponding path program 1 times [2022-01-11 06:19:50,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:19:50,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559594584] [2022-01-11 06:19:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:19:50,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:19:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:19:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:19:51,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:19:51,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559594584] [2022-01-11 06:19:51,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559594584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:19:51,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:19:51,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:19:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064548079] [2022-01-11 06:19:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:19:51,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:19:51,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:19:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:19:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:51,196 INFO L87 Difference]: Start difference. First operand 146875 states and 246407 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:19:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:19:57,825 INFO L93 Difference]: Finished difference Result 432519 states and 725106 transitions. [2022-01-11 06:19:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:19:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2022-01-11 06:19:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:19:58,514 INFO L225 Difference]: With dead ends: 432519 [2022-01-11 06:19:58,515 INFO L226 Difference]: Without dead ends: 290055 [2022-01-11 06:19:58,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:19:58,657 INFO L933 BasicCegarLoop]: 2453 mSDtfsCounter, 1028 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:19:58,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 3723 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:19:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290055 states. [2022-01-11 06:20:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290055 to 290053. [2022-01-11 06:20:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290053 states, 290052 states have (on average 1.6709831340587205) internal successors, (484672), 290052 states have internal predecessors, (484672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:20:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290053 states to 290053 states and 484672 transitions. [2022-01-11 06:20:08,233 INFO L78 Accepts]: Start accepts. Automaton has 290053 states and 484672 transitions. Word has length 237 [2022-01-11 06:20:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:20:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 290053 states and 484672 transitions. [2022-01-11 06:20:08,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:20:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 290053 states and 484672 transitions. [2022-01-11 06:20:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-11 06:20:08,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:20:08,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:20:08,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:20:08,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:20:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:20:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash -25225770, now seen corresponding path program 1 times [2022-01-11 06:20:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:20:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525826497] [2022-01-11 06:20:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:20:08,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:20:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:20:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:20:08,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:20:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525826497] [2022-01-11 06:20:08,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525826497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:20:08,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:20:08,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:20:08,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037956176] [2022-01-11 06:20:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:20:08,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:20:08,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:20:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:20:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:20:08,515 INFO L87 Difference]: Start difference. First operand 290053 states and 484672 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)