/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:13:20,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:13:20,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:13:20,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:13:20,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:13:20,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:13:20,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:13:20,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:13:20,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:13:20,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:13:20,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:13:20,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:13:20,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:13:20,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:13:20,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:13:20,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:13:20,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:13:20,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:13:20,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:13:20,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:13:20,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:13:20,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:13:20,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:13:20,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:13:20,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:13:20,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:13:20,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:13:20,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:13:20,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:13:20,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:13:20,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:13:20,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:13:20,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:13:20,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:13:20,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:13:20,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:13:20,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:13:20,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:13:20,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:13:20,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:13:20,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:13:20,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:13:20,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:13:20,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:13:20,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:13:20,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:13:20,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:13:20,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:13:20,457 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:13:20,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:13:20,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:13:20,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:13:20,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:13:20,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:13:20,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:13:20,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:13:20,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:13:20,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:13:20,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:13:20,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:13:20,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:13:20,462 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:13:20,462 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:13:20,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:13:20,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:13:20,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:13:20,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:13:20,727 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:13:20,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2022-01-10 12:13:20,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3882003e8/1d7d4ce9088341fda3670c3bafbfc1fe/FLAG5f74dd85d [2022-01-10 12:13:21,294 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:13:21,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2022-01-10 12:13:21,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3882003e8/1d7d4ce9088341fda3670c3bafbfc1fe/FLAG5f74dd85d [2022-01-10 12:13:21,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3882003e8/1d7d4ce9088341fda3670c3bafbfc1fe [2022-01-10 12:13:21,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:13:21,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:13:21,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:13:21,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:13:21,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:13:21,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:13:21" (1/1) ... [2022-01-10 12:13:21,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7824f552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:21, skipping insertion in model container [2022-01-10 12:13:21,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:13:21" (1/1) ... [2022-01-10 12:13:21,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:13:21,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:13:22,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-10 12:13:22,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:22,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:13:22,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:13:22,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-10 12:13:22,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:22,518 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:13:22,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-10 12:13:22,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:22,641 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:13:22,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22 WrapperNode [2022-01-10 12:13:22,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:13:22,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:13:22,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:13:22,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:13:22,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,786 INFO L137 Inliner]: procedures = 126, calls = 190, calls flagged for inlining = 105, calls inlined = 119, statements flattened = 1847 [2022-01-10 12:13:22,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:13:22,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:13:22,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:13:22,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:13:22,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:13:22,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:13:22,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:13:22,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:13:22,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (1/1) ... [2022-01-10 12:13:22,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:13:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:13:22,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:13:22,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:13:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:13:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:13:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:13:22,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:13:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:13:23,238 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:13:23,239 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:13:24,238 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:13:24,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:13:24,252 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:13:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:24 BoogieIcfgContainer [2022-01-10 12:13:24,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:13:24,256 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:13:24,256 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:13:24,258 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:13:24,261 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:24" (1/1) ... [2022-01-10 12:13:24,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:13:24 BasicIcfg [2022-01-10 12:13:24,614 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:13:24,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:13:24,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:13:24,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:13:24,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:13:21" (1/4) ... [2022-01-10 12:13:24,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ed738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:13:24, skipping insertion in model container [2022-01-10 12:13:24,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:22" (2/4) ... [2022-01-10 12:13:24,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ed738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:13:24, skipping insertion in model container [2022-01-10 12:13:24,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:24" (3/4) ... [2022-01-10 12:13:24,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ed738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:13:24, skipping insertion in model container [2022-01-10 12:13:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:13:24" (4/4) ... [2022-01-10 12:13:24,622 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.cTransformedIcfg [2022-01-10 12:13:24,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:13:24,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:13:24,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:13:24,687 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:13:24,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:13:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 434 states have (on average 1.7119815668202765) internal successors, (743), 436 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:13:24,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:24,723 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] [2022-01-10 12:13:24,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1048608734, now seen corresponding path program 1 times [2022-01-10 12:13:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:24,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245828923] [2022-01-10 12:13:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:24,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:25,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:25,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245828923] [2022-01-10 12:13:25,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245828923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:25,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:25,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:13:25,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834002571] [2022-01-10 12:13:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:25,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:13:25,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:25,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:13:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:13:25,157 INFO L87 Difference]: Start difference. First operand has 437 states, 434 states have (on average 1.7119815668202765) internal successors, (743), 436 states have internal predecessors, (743), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:25,222 INFO L93 Difference]: Finished difference Result 618 states and 1034 transitions. [2022-01-10 12:13:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:13:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:13:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:25,236 INFO L225 Difference]: With dead ends: 618 [2022-01-10 12:13:25,236 INFO L226 Difference]: Without dead ends: 422 [2022-01-10 12:13:25,240 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 [2022-01-10 12:13:25,243 INFO L933 BasicCegarLoop]: 737 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, 737 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 [2022-01-10 12:13:25,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-10 12:13:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-01-10 12:13:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7166666666666666) internal successors, (721), 421 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 721 transitions. [2022-01-10 12:13:25,317 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 721 transitions. Word has length 55 [2022-01-10 12:13:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:25,317 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 721 transitions. [2022-01-10 12:13:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 721 transitions. [2022-01-10 12:13:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:13:25,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:25,321 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] [2022-01-10 12:13:25,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:13:25,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -43484964, now seen corresponding path program 1 times [2022-01-10 12:13:25,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:25,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515275383] [2022-01-10 12:13:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:25,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:25,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:25,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515275383] [2022-01-10 12:13:25,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515275383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:25,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:25,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:13:25,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187342583] [2022-01-10 12:13:25,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:25,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:13:25,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:13:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:25,586 INFO L87 Difference]: Start difference. First operand 422 states and 721 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:25,702 INFO L93 Difference]: Finished difference Result 825 states and 1414 transitions. [2022-01-10 12:13:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:13:25,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:13:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:25,708 INFO L225 Difference]: With dead ends: 825 [2022-01-10 12:13:25,708 INFO L226 Difference]: Without dead ends: 422 [2022-01-10 12:13:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:25,711 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 696 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:25,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 716 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-10 12:13:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-01-10 12:13:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7119047619047618) internal successors, (719), 421 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 719 transitions. [2022-01-10 12:13:25,779 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 719 transitions. Word has length 56 [2022-01-10 12:13:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:25,779 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 719 transitions. [2022-01-10 12:13:25,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 719 transitions. [2022-01-10 12:13:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:13:25,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:25,782 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] [2022-01-10 12:13:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:13:25,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 217019356, now seen corresponding path program 1 times [2022-01-10 12:13:25,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562551775] [2022-01-10 12:13:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:25,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:25,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562551775] [2022-01-10 12:13:25,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562551775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:25,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:25,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:25,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783297807] [2022-01-10 12:13:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:25,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:25,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:25,956 INFO L87 Difference]: Start difference. First operand 422 states and 719 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:26,167 INFO L93 Difference]: Finished difference Result 1978 states and 3391 transitions. [2022-01-10 12:13:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:13:26,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 12:13:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:26,177 INFO L225 Difference]: With dead ends: 1978 [2022-01-10 12:13:26,177 INFO L226 Difference]: Without dead ends: 1580 [2022-01-10 12:13:26,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:13:26,185 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 3378 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3378 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:26,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3378 Valid, 3390 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-01-10 12:13:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 422. [2022-01-10 12:13:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7095238095238094) internal successors, (718), 421 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 718 transitions. [2022-01-10 12:13:26,223 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 718 transitions. Word has length 58 [2022-01-10 12:13:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:26,224 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 718 transitions. [2022-01-10 12:13:26,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 718 transitions. [2022-01-10 12:13:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:13:26,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:26,226 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] [2022-01-10 12:13:26,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:13:26,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 520963512, now seen corresponding path program 1 times [2022-01-10 12:13:26,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:26,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352579266] [2022-01-10 12:13:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:26,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:26,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352579266] [2022-01-10 12:13:26,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352579266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:26,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:13:26,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828521109] [2022-01-10 12:13:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:13:26,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:13:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:26,353 INFO L87 Difference]: Start difference. First operand 422 states and 718 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:26,399 INFO L93 Difference]: Finished difference Result 829 states and 1414 transitions. [2022-01-10 12:13:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:13:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 12:13:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:26,402 INFO L225 Difference]: With dead ends: 829 [2022-01-10 12:13:26,402 INFO L226 Difference]: Without dead ends: 436 [2022-01-10 12:13:26,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:26,412 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 697 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:26,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 754 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-10 12:13:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 422. [2022-01-10 12:13:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.707142857142857) internal successors, (717), 421 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 717 transitions. [2022-01-10 12:13:26,458 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 717 transitions. Word has length 59 [2022-01-10 12:13:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:26,459 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 717 transitions. [2022-01-10 12:13:26,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 717 transitions. [2022-01-10 12:13:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:13:26,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:26,462 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] [2022-01-10 12:13:26,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:13:26,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -447345765, now seen corresponding path program 1 times [2022-01-10 12:13:26,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:26,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775955156] [2022-01-10 12:13:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:26,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:26,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775955156] [2022-01-10 12:13:26,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775955156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:26,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:26,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:26,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20450345] [2022-01-10 12:13:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:26,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:26,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:26,635 INFO L87 Difference]: Start difference. First operand 422 states and 717 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:26,799 INFO L93 Difference]: Finished difference Result 1200 states and 2051 transitions. [2022-01-10 12:13:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:13:26,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:13:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:26,805 INFO L225 Difference]: With dead ends: 1200 [2022-01-10 12:13:26,805 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 12:13:26,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:13:26,807 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 3301 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:26,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 1466 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 12:13:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 422. [2022-01-10 12:13:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7023809523809523) internal successors, (715), 421 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 715 transitions. [2022-01-10 12:13:26,853 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 715 transitions. Word has length 60 [2022-01-10 12:13:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:26,860 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 715 transitions. [2022-01-10 12:13:26,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 715 transitions. [2022-01-10 12:13:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:13:26,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:26,862 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] [2022-01-10 12:13:26,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:13:26,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1169863906, now seen corresponding path program 1 times [2022-01-10 12:13:26,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127425256] [2022-01-10 12:13:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:26,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:27,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127425256] [2022-01-10 12:13:27,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127425256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:27,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:27,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:13:27,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877921076] [2022-01-10 12:13:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:27,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:13:27,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:13:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:13:27,007 INFO L87 Difference]: Start difference. First operand 422 states and 715 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:27,404 INFO L93 Difference]: Finished difference Result 2023 states and 3433 transitions. [2022-01-10 12:13:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:27,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 12:13:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:27,414 INFO L225 Difference]: With dead ends: 2023 [2022-01-10 12:13:27,414 INFO L226 Difference]: Without dead ends: 1874 [2022-01-10 12:13:27,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:13:27,417 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 3601 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:27,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3601 Valid, 4853 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:13:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-01-10 12:13:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 759. [2022-01-10 12:13:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 757 states have (on average 1.7054161162483488) internal successors, (1291), 758 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1291 transitions. [2022-01-10 12:13:27,495 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1291 transitions. Word has length 62 [2022-01-10 12:13:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:27,497 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1291 transitions. [2022-01-10 12:13:27,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1291 transitions. [2022-01-10 12:13:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:13:27,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:27,499 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] [2022-01-10 12:13:27,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:13:27,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1922581720, now seen corresponding path program 1 times [2022-01-10 12:13:27,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:27,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291885426] [2022-01-10 12:13:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:27,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:27,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291885426] [2022-01-10 12:13:27,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291885426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:27,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:27,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:13:27,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572053541] [2022-01-10 12:13:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:27,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:13:27,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:13:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:13:27,656 INFO L87 Difference]: Start difference. First operand 759 states and 1291 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:28,085 INFO L93 Difference]: Finished difference Result 3509 states and 5983 transitions. [2022-01-10 12:13:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:28,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:13:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:28,101 INFO L225 Difference]: With dead ends: 3509 [2022-01-10 12:13:28,101 INFO L226 Difference]: Without dead ends: 3284 [2022-01-10 12:13:28,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:13:28,104 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 3611 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3611 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:28,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3611 Valid, 3941 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-01-10 12:13:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 1410. [2022-01-10 12:13:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7137784090909092) internal successors, (2413), 1409 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2413 transitions. [2022-01-10 12:13:28,230 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2413 transitions. Word has length 63 [2022-01-10 12:13:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:28,231 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2413 transitions. [2022-01-10 12:13:28,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2413 transitions. [2022-01-10 12:13:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:13:28,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:28,234 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] [2022-01-10 12:13:28,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:13:28,234 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2136334142, now seen corresponding path program 1 times [2022-01-10 12:13:28,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:28,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030482249] [2022-01-10 12:13:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:28,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:28,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030482249] [2022-01-10 12:13:28,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030482249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:28,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:28,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:28,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651213644] [2022-01-10 12:13:28,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:28,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:28,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:28,327 INFO L87 Difference]: Start difference. First operand 1410 states and 2413 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:28,638 INFO L93 Difference]: Finished difference Result 4042 states and 6979 transitions. [2022-01-10 12:13:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:13:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 12:13:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:28,651 INFO L225 Difference]: With dead ends: 4042 [2022-01-10 12:13:28,651 INFO L226 Difference]: Without dead ends: 2682 [2022-01-10 12:13:28,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:13:28,658 INFO L933 BasicCegarLoop]: 1333 mSDtfsCounter, 2082 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:28,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 2001 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-01-10 12:13:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1410. [2022-01-10 12:13:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7123579545454546) internal successors, (2411), 1409 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2411 transitions. [2022-01-10 12:13:28,784 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2411 transitions. Word has length 63 [2022-01-10 12:13:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:28,784 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2411 transitions. [2022-01-10 12:13:28,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2411 transitions. [2022-01-10 12:13:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:13:28,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:28,787 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] [2022-01-10 12:13:28,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:13:28,788 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 199129519, now seen corresponding path program 1 times [2022-01-10 12:13:28,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:28,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552919070] [2022-01-10 12:13:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:28,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:28,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:28,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552919070] [2022-01-10 12:13:28,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552919070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:28,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:28,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:28,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703568798] [2022-01-10 12:13:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:28,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:13:28,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:13:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:13:28,933 INFO L87 Difference]: Start difference. First operand 1410 states and 2411 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:29,101 INFO L93 Difference]: Finished difference Result 1616 states and 2730 transitions. [2022-01-10 12:13:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:13:29,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 12:13:29,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:29,109 INFO L225 Difference]: With dead ends: 1616 [2022-01-10 12:13:29,109 INFO L226 Difference]: Without dead ends: 1410 [2022-01-10 12:13:29,110 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 [2022-01-10 12:13:29,113 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 442 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:29,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1681 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-01-10 12:13:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-01-10 12:13:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7088068181818181) internal successors, (2406), 1409 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2406 transitions. [2022-01-10 12:13:29,255 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2406 transitions. Word has length 64 [2022-01-10 12:13:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:29,255 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2406 transitions. [2022-01-10 12:13:29,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2406 transitions. [2022-01-10 12:13:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:13:29,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:29,262 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] [2022-01-10 12:13:29,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:13:29,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1845898802, now seen corresponding path program 1 times [2022-01-10 12:13:29,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:29,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82628599] [2022-01-10 12:13:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:29,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:29,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82628599] [2022-01-10 12:13:29,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82628599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:29,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:29,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:13:29,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911292871] [2022-01-10 12:13:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:29,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:13:29,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:13:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:13:29,447 INFO L87 Difference]: Start difference. First operand 1410 states and 2406 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:30,209 INFO L93 Difference]: Finished difference Result 3012 states and 4860 transitions. [2022-01-10 12:13:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 12:13:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:13:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:30,220 INFO L225 Difference]: With dead ends: 3012 [2022-01-10 12:13:30,220 INFO L226 Difference]: Without dead ends: 2866 [2022-01-10 12:13:30,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-01-10 12:13:30,222 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 4641 mSDsluCounter, 4835 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:30,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 5642 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:13:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-01-10 12:13:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1991. [2022-01-10 12:13:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1989 states have (on average 1.6827551533433887) internal successors, (3347), 1990 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3347 transitions. [2022-01-10 12:13:30,466 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3347 transitions. Word has length 67 [2022-01-10 12:13:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:30,466 INFO L470 AbstractCegarLoop]: Abstraction has 1991 states and 3347 transitions. [2022-01-10 12:13:30,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3347 transitions. [2022-01-10 12:13:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:13:30,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:30,470 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] [2022-01-10 12:13:30,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:13:30,471 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1418842254, now seen corresponding path program 1 times [2022-01-10 12:13:30,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:30,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128275625] [2022-01-10 12:13:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:30,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:30,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128275625] [2022-01-10 12:13:30,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128275625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:30,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:30,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:30,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853282047] [2022-01-10 12:13:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:30,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:30,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:30,628 INFO L87 Difference]: Start difference. First operand 1991 states and 3347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:31,147 INFO L93 Difference]: Finished difference Result 3725 states and 5865 transitions. [2022-01-10 12:13:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:31,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:13:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:31,160 INFO L225 Difference]: With dead ends: 3725 [2022-01-10 12:13:31,160 INFO L226 Difference]: Without dead ends: 3344 [2022-01-10 12:13:31,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:31,162 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1374 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:31,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2384 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-01-10 12:13:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2440. [2022-01-10 12:13:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.6468416735028713) internal successors, (4015), 2439 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 4015 transitions. [2022-01-10 12:13:31,473 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 4015 transitions. Word has length 68 [2022-01-10 12:13:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 4015 transitions. [2022-01-10 12:13:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 4015 transitions. [2022-01-10 12:13:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:13:31,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:31,478 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] [2022-01-10 12:13:31,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:13:31,478 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1887320845, now seen corresponding path program 1 times [2022-01-10 12:13:31,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:31,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443232523] [2022-01-10 12:13:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:31,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:31,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443232523] [2022-01-10 12:13:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443232523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:31,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:31,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:31,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599120222] [2022-01-10 12:13:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:31,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:13:31,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:13:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:31,631 INFO L87 Difference]: Start difference. First operand 2440 states and 4015 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:32,042 INFO L93 Difference]: Finished difference Result 3078 states and 4956 transitions. [2022-01-10 12:13:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:13:32,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:13:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:32,051 INFO L225 Difference]: With dead ends: 3078 [2022-01-10 12:13:32,051 INFO L226 Difference]: Without dead ends: 2312 [2022-01-10 12:13:32,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:13:32,054 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1213 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:32,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 4553 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-01-10 12:13:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2264. [2022-01-10 12:13:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2262 states have (on average 1.6317418213969939) internal successors, (3691), 2263 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3691 transitions. [2022-01-10 12:13:32,301 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3691 transitions. Word has length 69 [2022-01-10 12:13:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:32,302 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 3691 transitions. [2022-01-10 12:13:32,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3691 transitions. [2022-01-10 12:13:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:13:32,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:32,306 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] [2022-01-10 12:13:32,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:13:32,307 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 752188469, now seen corresponding path program 1 times [2022-01-10 12:13:32,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990067175] [2022-01-10 12:13:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:32,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:32,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:32,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990067175] [2022-01-10 12:13:32,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990067175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:32,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:32,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:32,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332493056] [2022-01-10 12:13:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:32,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:32,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:32,416 INFO L87 Difference]: Start difference. First operand 2264 states and 3691 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:33,005 INFO L93 Difference]: Finished difference Result 5444 states and 8317 transitions. [2022-01-10 12:13:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 12:13:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:33,020 INFO L225 Difference]: With dead ends: 5444 [2022-01-10 12:13:33,020 INFO L226 Difference]: Without dead ends: 4438 [2022-01-10 12:13:33,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:33,023 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1262 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:33,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 2463 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2022-01-10 12:13:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3358. [2022-01-10 12:13:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3356 states have (on average 1.5884982121573301) internal successors, (5331), 3357 states have internal predecessors, (5331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 5331 transitions. [2022-01-10 12:13:33,471 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 5331 transitions. Word has length 82 [2022-01-10 12:13:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:33,471 INFO L470 AbstractCegarLoop]: Abstraction has 3358 states and 5331 transitions. [2022-01-10 12:13:33,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 5331 transitions. [2022-01-10 12:13:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:13:33,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:33,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:33,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:13:33,479 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1414197970, now seen corresponding path program 1 times [2022-01-10 12:13:33,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585872091] [2022-01-10 12:13:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:33,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:33,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585872091] [2022-01-10 12:13:33,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585872091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:33,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:33,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:33,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279611847] [2022-01-10 12:13:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:33,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:33,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:33,601 INFO L87 Difference]: Start difference. First operand 3358 states and 5331 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:34,519 INFO L93 Difference]: Finished difference Result 7106 states and 10673 transitions. [2022-01-10 12:13:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 12:13:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:34,531 INFO L225 Difference]: With dead ends: 7106 [2022-01-10 12:13:34,531 INFO L226 Difference]: Without dead ends: 5234 [2022-01-10 12:13:34,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:34,535 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1095 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:34,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2527 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2022-01-10 12:13:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 3793. [2022-01-10 12:13:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 3791 states have (on average 1.5666051173832762) internal successors, (5939), 3792 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5939 transitions. [2022-01-10 12:13:35,012 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5939 transitions. Word has length 83 [2022-01-10 12:13:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:35,012 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5939 transitions. [2022-01-10 12:13:35,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5939 transitions. [2022-01-10 12:13:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:35,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:35,020 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] [2022-01-10 12:13:35,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:13:35,021 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2021495733, now seen corresponding path program 1 times [2022-01-10 12:13:35,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:35,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261510458] [2022-01-10 12:13:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:35,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:35,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:35,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261510458] [2022-01-10 12:13:35,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261510458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:35,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:35,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:35,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259175206] [2022-01-10 12:13:35,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:35,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:13:35,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:13:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:35,179 INFO L87 Difference]: Start difference. First operand 3793 states and 5939 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:36,520 INFO L93 Difference]: Finished difference Result 7144 states and 10531 transitions. [2022-01-10 12:13:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:13:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 12:13:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:36,537 INFO L225 Difference]: With dead ends: 7144 [2022-01-10 12:13:36,537 INFO L226 Difference]: Without dead ends: 6296 [2022-01-10 12:13:36,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:13:36,542 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 3936 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:36,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3936 Valid, 4770 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2022-01-10 12:13:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 3773. [2022-01-10 12:13:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3771 states have (on average 1.5616547334924422) internal successors, (5889), 3772 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5889 transitions. [2022-01-10 12:13:36,970 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5889 transitions. Word has length 84 [2022-01-10 12:13:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:36,971 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5889 transitions. [2022-01-10 12:13:36,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5889 transitions. [2022-01-10 12:13:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:36,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:36,977 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] [2022-01-10 12:13:36,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:13:36,978 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1481763790, now seen corresponding path program 1 times [2022-01-10 12:13:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118621268] [2022-01-10 12:13:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:37,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:37,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118621268] [2022-01-10 12:13:37,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118621268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:37,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:37,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:13:37,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404241867] [2022-01-10 12:13:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:37,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:13:37,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:13:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:13:37,094 INFO L87 Difference]: Start difference. First operand 3773 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:37,737 INFO L93 Difference]: Finished difference Result 5969 states and 9091 transitions. [2022-01-10 12:13:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 12:13:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:37,746 INFO L225 Difference]: With dead ends: 5969 [2022-01-10 12:13:37,746 INFO L226 Difference]: Without dead ends: 3886 [2022-01-10 12:13:37,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:13:37,749 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1152 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:37,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3314 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-01-10 12:13:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3773. [2022-01-10 12:13:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3771 states have (on average 1.5552903739061257) internal successors, (5865), 3772 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5865 transitions. [2022-01-10 12:13:38,155 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5865 transitions. Word has length 84 [2022-01-10 12:13:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:38,155 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5865 transitions. [2022-01-10 12:13:38,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5865 transitions. [2022-01-10 12:13:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:38,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:38,161 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] [2022-01-10 12:13:38,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:13:38,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash 803099665, now seen corresponding path program 1 times [2022-01-10 12:13:38,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:38,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211842804] [2022-01-10 12:13:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:38,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:38,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211842804] [2022-01-10 12:13:38,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211842804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:38,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:38,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:38,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259155503] [2022-01-10 12:13:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:38,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:38,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:38,287 INFO L87 Difference]: Start difference. First operand 3773 states and 5865 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:39,493 INFO L93 Difference]: Finished difference Result 7814 states and 11482 transitions. [2022-01-10 12:13:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:13:39,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 12:13:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:39,506 INFO L225 Difference]: With dead ends: 7814 [2022-01-10 12:13:39,507 INFO L226 Difference]: Without dead ends: 6240 [2022-01-10 12:13:39,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:13:39,511 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 510 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:39,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 3246 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:39,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-01-10 12:13:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3877. [2022-01-10 12:13:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3875 states have (on average 1.534709677419355) internal successors, (5947), 3876 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5947 transitions. [2022-01-10 12:13:40,021 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5947 transitions. Word has length 84 [2022-01-10 12:13:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:40,021 INFO L470 AbstractCegarLoop]: Abstraction has 3877 states and 5947 transitions. [2022-01-10 12:13:40,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5947 transitions. [2022-01-10 12:13:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:40,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:40,026 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] [2022-01-10 12:13:40,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:13:40,026 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1761042830, now seen corresponding path program 1 times [2022-01-10 12:13:40,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:40,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248994258] [2022-01-10 12:13:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:40,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:40,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:40,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248994258] [2022-01-10 12:13:40,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248994258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:40,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:40,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:40,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114250112] [2022-01-10 12:13:40,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:40,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:13:40,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:13:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:13:40,116 INFO L87 Difference]: Start difference. First operand 3877 states and 5947 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:40,553 INFO L93 Difference]: Finished difference Result 5293 states and 8015 transitions. [2022-01-10 12:13:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:13:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 12:13:40,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:40,562 INFO L225 Difference]: With dead ends: 5293 [2022-01-10 12:13:40,562 INFO L226 Difference]: Without dead ends: 3877 [2022-01-10 12:13:40,565 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 [2022-01-10 12:13:40,565 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 527 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:40,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 1585 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2022-01-10 12:13:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3877. [2022-01-10 12:13:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3875 states have (on average 1.5336774193548388) internal successors, (5943), 3876 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5943 transitions. [2022-01-10 12:13:41,068 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5943 transitions. Word has length 84 [2022-01-10 12:13:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:41,068 INFO L470 AbstractCegarLoop]: Abstraction has 3877 states and 5943 transitions. [2022-01-10 12:13:41,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5943 transitions. [2022-01-10 12:13:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:41,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:41,074 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] [2022-01-10 12:13:41,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:13:41,075 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:41,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -562985009, now seen corresponding path program 1 times [2022-01-10 12:13:41,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:41,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176001927] [2022-01-10 12:13:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:41,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:41,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:41,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176001927] [2022-01-10 12:13:41,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176001927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:41,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:41,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:41,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613746222] [2022-01-10 12:13:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:41,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:13:41,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:13:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:13:41,202 INFO L87 Difference]: Start difference. First operand 3877 states and 5943 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:42,266 INFO L93 Difference]: Finished difference Result 6678 states and 9771 transitions. [2022-01-10 12:13:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:13:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 12:13:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:42,277 INFO L225 Difference]: With dead ends: 6678 [2022-01-10 12:13:42,278 INFO L226 Difference]: Without dead ends: 5835 [2022-01-10 12:13:42,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:13:42,281 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 1219 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:42,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 4505 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2022-01-10 12:13:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 3721. [2022-01-10 12:13:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3719 states have (on average 1.5270233933853186) internal successors, (5679), 3720 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5679 transitions. [2022-01-10 12:13:42,855 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5679 transitions. Word has length 84 [2022-01-10 12:13:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:42,855 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5679 transitions. [2022-01-10 12:13:42,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5679 transitions. [2022-01-10 12:13:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:13:42,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:42,860 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] [2022-01-10 12:13:42,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:13:42,861 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1017192278, now seen corresponding path program 1 times [2022-01-10 12:13:42,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:42,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136888661] [2022-01-10 12:13:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:42,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:43,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:43,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136888661] [2022-01-10 12:13:43,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136888661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:43,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:43,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:43,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855295478] [2022-01-10 12:13:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:13:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:13:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:13:43,070 INFO L87 Difference]: Start difference. First operand 3721 states and 5679 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:47,438 INFO L93 Difference]: Finished difference Result 23659 states and 34631 transitions. [2022-01-10 12:13:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 12:13:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 12:13:47,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:47,470 INFO L225 Difference]: With dead ends: 23659 [2022-01-10 12:13:47,470 INFO L226 Difference]: Without dead ends: 22610 [2022-01-10 12:13:47,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2022-01-10 12:13:47,480 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 7399 mSDsluCounter, 6245 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7399 SdHoareTripleChecker+Valid, 6943 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:47,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7399 Valid, 6943 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:13:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22610 states. [2022-01-10 12:13:49,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22610 to 9685. [2022-01-10 12:13:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9685 states, 9683 states have (on average 1.497366518640917) internal successors, (14499), 9684 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9685 states to 9685 states and 14499 transitions. [2022-01-10 12:13:49,179 INFO L78 Accepts]: Start accepts. Automaton has 9685 states and 14499 transitions. Word has length 85 [2022-01-10 12:13:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:49,179 INFO L470 AbstractCegarLoop]: Abstraction has 9685 states and 14499 transitions. [2022-01-10 12:13:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9685 states and 14499 transitions. [2022-01-10 12:13:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:13:49,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:49,193 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] [2022-01-10 12:13:49,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:13:49,194 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:49,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash 443768082, now seen corresponding path program 1 times [2022-01-10 12:13:49,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:49,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898752266] [2022-01-10 12:13:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:49,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:49,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:49,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898752266] [2022-01-10 12:13:49,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898752266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:49,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:49,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974166356] [2022-01-10 12:13:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:49,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:13:49,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:49,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:13:49,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:13:49,303 INFO L87 Difference]: Start difference. First operand 9685 states and 14499 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:51,557 INFO L93 Difference]: Finished difference Result 15411 states and 22102 transitions. [2022-01-10 12:13:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:13:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 12:13:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:51,568 INFO L225 Difference]: With dead ends: 15411 [2022-01-10 12:13:51,568 INFO L226 Difference]: Without dead ends: 10741 [2022-01-10 12:13:51,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:51,573 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 292 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:51,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2295 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2022-01-10 12:13:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 7955. [2022-01-10 12:13:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7955 states, 7953 states have (on average 1.4784358103860178) internal successors, (11758), 7954 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 11758 transitions. [2022-01-10 12:13:52,811 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 11758 transitions. Word has length 85 [2022-01-10 12:13:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:52,812 INFO L470 AbstractCegarLoop]: Abstraction has 7955 states and 11758 transitions. [2022-01-10 12:13:52,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 11758 transitions. [2022-01-10 12:13:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:13:52,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:52,824 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] [2022-01-10 12:13:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:13:52,825 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 303794437, now seen corresponding path program 1 times [2022-01-10 12:13:52,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942807263] [2022-01-10 12:13:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:52,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:52,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:52,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942807263] [2022-01-10 12:13:52,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942807263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:52,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:52,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393667178] [2022-01-10 12:13:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:52,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:13:52,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:13:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:13:52,969 INFO L87 Difference]: Start difference. First operand 7955 states and 11758 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:59,769 INFO L93 Difference]: Finished difference Result 33552 states and 48009 transitions. [2022-01-10 12:13:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 12:13:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 12:13:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:59,813 INFO L225 Difference]: With dead ends: 33552 [2022-01-10 12:13:59,813 INFO L226 Difference]: Without dead ends: 31746 [2022-01-10 12:13:59,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2022-01-10 12:13:59,824 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 7006 mSDsluCounter, 5925 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7006 SdHoareTripleChecker+Valid, 6627 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:59,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7006 Valid, 6627 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:13:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31746 states. [2022-01-10 12:14:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31746 to 17432. [2022-01-10 12:14:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17432 states, 17430 states have (on average 1.4673551348250145) internal successors, (25576), 17431 states have internal predecessors, (25576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17432 states to 17432 states and 25576 transitions. [2022-01-10 12:14:03,098 INFO L78 Accepts]: Start accepts. Automaton has 17432 states and 25576 transitions. Word has length 86 [2022-01-10 12:14:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:03,098 INFO L470 AbstractCegarLoop]: Abstraction has 17432 states and 25576 transitions. [2022-01-10 12:14:03,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17432 states and 25576 transitions. [2022-01-10 12:14:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:14:03,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:03,118 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] [2022-01-10 12:14:03,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:14:03,118 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:03,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1700406883, now seen corresponding path program 1 times [2022-01-10 12:14:03,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:03,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393290147] [2022-01-10 12:14:03,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:03,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:03,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393290147] [2022-01-10 12:14:03,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393290147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:03,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:03,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:03,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706621717] [2022-01-10 12:14:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:14:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:14:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:03,252 INFO L87 Difference]: Start difference. First operand 17432 states and 25576 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:08,367 INFO L93 Difference]: Finished difference Result 27860 states and 39563 transitions. [2022-01-10 12:14:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:14:08,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 12:14:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:08,407 INFO L225 Difference]: With dead ends: 27860 [2022-01-10 12:14:08,407 INFO L226 Difference]: Without dead ends: 22189 [2022-01-10 12:14:08,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:14:08,421 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 2697 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:08,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2697 Valid, 3448 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22189 states. [2022-01-10 12:14:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22189 to 17248. [2022-01-10 12:14:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17246 states have (on average 1.461208396149832) internal successors, (25200), 17247 states have internal predecessors, (25200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 25200 transitions. [2022-01-10 12:14:11,961 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 25200 transitions. Word has length 86 [2022-01-10 12:14:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:11,961 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 25200 transitions. [2022-01-10 12:14:11,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 25200 transitions. [2022-01-10 12:14:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:14:11,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:11,979 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] [2022-01-10 12:14:11,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:14:11,979 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1842696384, now seen corresponding path program 1 times [2022-01-10 12:14:11,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999442060] [2022-01-10 12:14:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:11,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:12,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999442060] [2022-01-10 12:14:12,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999442060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:12,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:12,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:12,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304610781] [2022-01-10 12:14:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:12,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:14:12,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:14:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:14:12,114 INFO L87 Difference]: Start difference. First operand 17248 states and 25200 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:17,233 INFO L93 Difference]: Finished difference Result 30153 states and 42438 transitions. [2022-01-10 12:14:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:14:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 12:14:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:17,265 INFO L225 Difference]: With dead ends: 30153 [2022-01-10 12:14:17,266 INFO L226 Difference]: Without dead ends: 22390 [2022-01-10 12:14:17,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:14:17,279 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1350 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:17,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1350 Valid, 4659 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2022-01-10 12:14:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 17248. [2022-01-10 12:14:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17246 states have (on average 1.4514670068421662) internal successors, (25032), 17247 states have internal predecessors, (25032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 25032 transitions. [2022-01-10 12:14:20,983 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 25032 transitions. Word has length 86 [2022-01-10 12:14:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:20,983 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 25032 transitions. [2022-01-10 12:14:20,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 25032 transitions. [2022-01-10 12:14:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:14:20,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:20,997 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] [2022-01-10 12:14:20,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 12:14:20,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1811676577, now seen corresponding path program 1 times [2022-01-10 12:14:20,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:20,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008329372] [2022-01-10 12:14:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:20,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:14:21,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:21,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008329372] [2022-01-10 12:14:21,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008329372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:21,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:21,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:21,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233588987] [2022-01-10 12:14:21,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:21,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:14:21,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:14:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:21,108 INFO L87 Difference]: Start difference. First operand 17248 states and 25032 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)