/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_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:17:29,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:17:29,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:17:29,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:17:29,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:17:29,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:17:29,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:17:29,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:17:29,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:17:29,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:17:29,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:17:29,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:17:29,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:17:29,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:17:29,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:17:29,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:17:29,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:17:29,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:17:29,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:17:29,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:17:29,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:17:29,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:17:29,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:17:29,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:17:29,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:17:29,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:17:29,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:17:29,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:17:29,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:17:29,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:17:29,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:17:29,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:17:29,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:17:29,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:17:29,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:17:29,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:17:29,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:17:29,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:17:29,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:17:29,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:17:29,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:17:29,390 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 12:17:29,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:17:29,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:17:29,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:17:29,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:17:29,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:17:29,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:17:29,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:17:29,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:17:29,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:29,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:17:29,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:17:29,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:17:29,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:17:29,410 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:17:29,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:17:29,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:17:29,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:17:29,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:17:29,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:17:29,653 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:17:29,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2022-01-10 12:17:29,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0fe5322/fe4cfc5f5d3a426fa9bdd3f231350483/FLAGd1c70e3fb [2022-01-10 12:17:30,189 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:17:30,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2022-01-10 12:17:30,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0fe5322/fe4cfc5f5d3a426fa9bdd3f231350483/FLAGd1c70e3fb [2022-01-10 12:17:30,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0fe5322/fe4cfc5f5d3a426fa9bdd3f231350483 [2022-01-10 12:17:30,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:17:30,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:17:30,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:30,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:17:30,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:17:30,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:30" (1/1) ... [2022-01-10 12:17:30,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19df224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:30, skipping insertion in model container [2022-01-10 12:17:30,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:30" (1/1) ... [2022-01-10 12:17:30,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:17:30,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:30,891 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_spec4_product35.cil.c[1542,1555] [2022-01-10 12:17:31,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:31,144 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:17:31,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:31,157 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_spec4_product35.cil.c[1542,1555] [2022-01-10 12:17:31,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:31,223 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:17:31,235 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_spec4_product35.cil.c[1542,1555] [2022-01-10 12:17:31,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:31,307 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:17:31,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31 WrapperNode [2022-01-10 12:17:31,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:31,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:31,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:17:31,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:17:31,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,461 INFO L137 Inliner]: procedures = 139, calls = 247, calls flagged for inlining = 152, calls inlined = 462, statements flattened = 6964 [2022-01-10 12:17:31,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:31,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:17:31,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:17:31,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:17:31,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:17:31,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:17:31,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:17:31,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:17:31,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (1/1) ... [2022-01-10 12:17:31,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:17:31,652 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 12:17:31,658 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 12:17:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:17:31,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:17:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:17:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:17:31,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:17:31,910 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:17:31,911 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:17:34,053 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:17:34,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:17:34,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:17:34,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:34 BoogieIcfgContainer [2022-01-10 12:17:34,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:17:34,067 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:17:34,067 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:17:34,068 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:17:34,070 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:34" (1/1) ... [2022-01-10 12:17:34,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:34 BasicIcfg [2022-01-10 12:17:34,447 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:17:34,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:17:34,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:17:34,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:17:34,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:17:30" (1/4) ... [2022-01-10 12:17:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dbe490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:34, skipping insertion in model container [2022-01-10 12:17:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:31" (2/4) ... [2022-01-10 12:17:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dbe490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:34, skipping insertion in model container [2022-01-10 12:17:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:34" (3/4) ... [2022-01-10 12:17:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dbe490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:17:34, skipping insertion in model container [2022-01-10 12:17:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:34" (4/4) ... [2022-01-10 12:17:34,452 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product35.cil.cTransformedIcfg [2022-01-10 12:17:34,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:17:34,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:17:34,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:17:34,502 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 12:17:34,502 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:17:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 1457 states, 1450 states have (on average 1.666206896551724) internal successors, (2416), 1456 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:17:34,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:34,548 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] [2022-01-10 12:17:34,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -155847040, now seen corresponding path program 1 times [2022-01-10 12:17:34,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:34,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183039458] [2022-01-10 12:17:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:34,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:34,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183039458] [2022-01-10 12:17:34,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183039458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:34,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:34,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:17:34,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086150446] [2022-01-10 12:17:34,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:34,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:17:34,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:17:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:17:34,991 INFO L87 Difference]: Start difference. First operand has 1457 states, 1450 states have (on average 1.666206896551724) internal successors, (2416), 1456 states have internal predecessors, (2416), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:35,096 INFO L93 Difference]: Finished difference Result 2600 states and 4277 transitions. [2022-01-10 12:17:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:17:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 12:17:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:35,121 INFO L225 Difference]: With dead ends: 2600 [2022-01-10 12:17:35,121 INFO L226 Difference]: Without dead ends: 1183 [2022-01-10 12:17:35,128 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 12:17:35,132 INFO L933 BasicCegarLoop]: 2402 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, 2402 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 12:17:35,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-10 12:17:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2022-01-10 12:17:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1177 states have (on average 1.6779949022939677) internal successors, (1975), 1182 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1975 transitions. [2022-01-10 12:17:35,214 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1975 transitions. Word has length 57 [2022-01-10 12:17:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:35,214 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1975 transitions. [2022-01-10 12:17:35,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1975 transitions. [2022-01-10 12:17:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:17:35,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:35,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:35,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:17:35,217 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:35,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:35,217 INFO L85 PathProgramCache]: Analyzing trace with hash -732016394, now seen corresponding path program 1 times [2022-01-10 12:17:35,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:35,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555101140] [2022-01-10 12:17:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:35,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:35,397 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 12:17:35,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:35,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555101140] [2022-01-10 12:17:35,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555101140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:35,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:35,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:35,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398680751] [2022-01-10 12:17:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:35,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:35,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:35,401 INFO L87 Difference]: Start difference. First operand 1183 states and 1975 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 12:17:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:35,504 INFO L93 Difference]: Finished difference Result 2347 states and 3922 transitions. [2022-01-10 12:17:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 12:17:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:35,511 INFO L225 Difference]: With dead ends: 2347 [2022-01-10 12:17:35,511 INFO L226 Difference]: Without dead ends: 1183 [2022-01-10 12:17:35,514 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 12:17:35,515 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 1950 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:35,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 1966 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-10 12:17:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2022-01-10 12:17:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1177 states have (on average 1.6762956669498725) internal successors, (1973), 1182 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1973 transitions. [2022-01-10 12:17:35,560 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1973 transitions. Word has length 58 [2022-01-10 12:17:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:35,561 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1973 transitions. [2022-01-10 12:17:35,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 12:17:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1973 transitions. [2022-01-10 12:17:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:17:35,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:35,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:35,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:17:35,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1835093238, now seen corresponding path program 1 times [2022-01-10 12:17:35,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167167736] [2022-01-10 12:17:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:35,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:35,692 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 12:17:35,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:35,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167167736] [2022-01-10 12:17:35,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167167736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:35,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:35,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:35,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070211056] [2022-01-10 12:17:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:35,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:35,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:35,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:35,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:35,696 INFO L87 Difference]: Start difference. First operand 1183 states and 1973 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 12:17:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:36,008 INFO L93 Difference]: Finished difference Result 5783 states and 9661 transitions. [2022-01-10 12:17:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:36,009 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 12:17:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:36,024 INFO L225 Difference]: With dead ends: 5783 [2022-01-10 12:17:36,024 INFO L226 Difference]: Without dead ends: 4624 [2022-01-10 12:17:36,026 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 12:17:36,027 INFO L933 BasicCegarLoop]: 3869 mSDtfsCounter, 9648 mSDsluCounter, 5791 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9648 SdHoareTripleChecker+Valid, 9660 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 12:17:36,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9648 Valid, 9660 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2022-01-10 12:17:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 1183. [2022-01-10 12:17:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1177 states have (on average 1.675446049277825) internal successors, (1972), 1182 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1972 transitions. [2022-01-10 12:17:36,089 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1972 transitions. Word has length 60 [2022-01-10 12:17:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:36,089 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1972 transitions. [2022-01-10 12:17:36,089 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 12:17:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1972 transitions. [2022-01-10 12:17:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:17:36,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:36,090 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] [2022-01-10 12:17:36,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:17:36,091 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:36,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1660474406, now seen corresponding path program 1 times [2022-01-10 12:17:36,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:36,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372109566] [2022-01-10 12:17:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:36,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:36,190 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 12:17:36,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372109566] [2022-01-10 12:17:36,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372109566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:36,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:36,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:36,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300655] [2022-01-10 12:17:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:36,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:36,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:36,192 INFO L87 Difference]: Start difference. First operand 1183 states and 1972 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:36,289 INFO L93 Difference]: Finished difference Result 2351 states and 3922 transitions. [2022-01-10 12:17:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:36,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 12:17:36,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:36,294 INFO L225 Difference]: With dead ends: 2351 [2022-01-10 12:17:36,294 INFO L226 Difference]: Without dead ends: 1197 [2022-01-10 12:17:36,297 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 12:17:36,303 INFO L933 BasicCegarLoop]: 1986 mSDtfsCounter, 1951 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 2008 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 12:17:36,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1951 Valid, 2008 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-01-10 12:17:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1183. [2022-01-10 12:17:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1177 states have (on average 1.6745964316057773) internal successors, (1971), 1182 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1971 transitions. [2022-01-10 12:17:36,350 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1971 transitions. Word has length 61 [2022-01-10 12:17:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:36,351 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1971 transitions. [2022-01-10 12:17:36,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1971 transitions. [2022-01-10 12:17:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:17:36,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:36,354 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 12:17:36,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:17:36,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2099474933, now seen corresponding path program 1 times [2022-01-10 12:17:36,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:36,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151438628] [2022-01-10 12:17:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:36,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:36,439 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 12:17:36,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151438628] [2022-01-10 12:17:36,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151438628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:36,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:36,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758236788] [2022-01-10 12:17:36,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:36,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:36,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:36,442 INFO L87 Difference]: Start difference. First operand 1183 states and 1971 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:17:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:36,615 INFO L93 Difference]: Finished difference Result 3483 states and 5813 transitions. [2022-01-10 12:17:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:17:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:36,622 INFO L225 Difference]: With dead ends: 3483 [2022-01-10 12:17:36,622 INFO L226 Difference]: Without dead ends: 2334 [2022-01-10 12:17:36,624 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 12:17:36,624 INFO L933 BasicCegarLoop]: 1980 mSDtfsCounter, 9571 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9571 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:36,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9571 Valid, 3974 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-01-10 12:17:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 1183. [2022-01-10 12:17:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1177 states have (on average 1.6728971962616823) internal successors, (1969), 1182 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1969 transitions. [2022-01-10 12:17:36,675 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1969 transitions. Word has length 62 [2022-01-10 12:17:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1969 transitions. [2022-01-10 12:17:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 12:17:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1969 transitions. [2022-01-10 12:17:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:17:36,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:36,676 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 12:17:36,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:17:36,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:36,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1799822776, now seen corresponding path program 1 times [2022-01-10 12:17:36,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423349710] [2022-01-10 12:17:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:36,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:36,773 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 12:17:36,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:36,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423349710] [2022-01-10 12:17:36,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423349710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:36,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:36,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:36,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897718519] [2022-01-10 12:17:36,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:36,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:36,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:36,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:36,775 INFO L87 Difference]: Start difference. First operand 1183 states and 1969 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:17:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:37,696 INFO L93 Difference]: Finished difference Result 9728 states and 15930 transitions. [2022-01-10 12:17:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:37,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:17:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:37,723 INFO L225 Difference]: With dead ends: 9728 [2022-01-10 12:17:37,724 INFO L226 Difference]: Without dead ends: 8872 [2022-01-10 12:17:37,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:37,728 INFO L933 BasicCegarLoop]: 3768 mSDtfsCounter, 16733 mSDsluCounter, 13553 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16733 SdHoareTripleChecker+Valid, 17321 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:37,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16733 Valid, 17321 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:17:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2022-01-10 12:17:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 2051. [2022-01-10 12:17:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2045 states have (on average 1.6748166259168704) internal successors, (3425), 2050 states have internal predecessors, (3425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3425 transitions. [2022-01-10 12:17:37,863 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3425 transitions. Word has length 64 [2022-01-10 12:17:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:37,863 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 3425 transitions. [2022-01-10 12:17:37,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:17:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3425 transitions. [2022-01-10 12:17:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:37,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:37,865 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] [2022-01-10 12:17:37,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:17:37,865 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash -179498869, now seen corresponding path program 1 times [2022-01-10 12:17:37,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:37,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437073097] [2022-01-10 12:17:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:37,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:37,962 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 12:17:37,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437073097] [2022-01-10 12:17:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437073097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:37,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:37,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:37,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112720155] [2022-01-10 12:17:37,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:37,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:37,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:37,964 INFO L87 Difference]: Start difference. First operand 2051 states and 3425 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:38,247 INFO L93 Difference]: Finished difference Result 4651 states and 7631 transitions. [2022-01-10 12:17:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:17:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:38,257 INFO L225 Difference]: With dead ends: 4651 [2022-01-10 12:17:38,257 INFO L226 Difference]: Without dead ends: 3226 [2022-01-10 12:17:38,259 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 12:17:38,260 INFO L933 BasicCegarLoop]: 1951 mSDtfsCounter, 7045 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7045 SdHoareTripleChecker+Valid, 4186 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:38,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7045 Valid, 4186 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2022-01-10 12:17:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 2051. [2022-01-10 12:17:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2045 states have (on average 1.6728606356968214) internal successors, (3421), 2050 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3421 transitions. [2022-01-10 12:17:38,384 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3421 transitions. Word has length 65 [2022-01-10 12:17:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:38,384 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 3421 transitions. [2022-01-10 12:17:38,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3421 transitions. [2022-01-10 12:17:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:38,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:38,386 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] [2022-01-10 12:17:38,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:17:38,386 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1812006432, now seen corresponding path program 1 times [2022-01-10 12:17:38,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:38,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59701905] [2022-01-10 12:17:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:38,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:38,448 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 12:17:38,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:38,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59701905] [2022-01-10 12:17:38,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59701905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:38,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:38,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:38,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131444583] [2022-01-10 12:17:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:38,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:38,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:38,450 INFO L87 Difference]: Start difference. First operand 2051 states and 3421 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:38,723 INFO L93 Difference]: Finished difference Result 6030 states and 10092 transitions. [2022-01-10 12:17:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:17:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:17:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:38,736 INFO L225 Difference]: With dead ends: 6030 [2022-01-10 12:17:38,736 INFO L226 Difference]: Without dead ends: 4016 [2022-01-10 12:17:38,739 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 12:17:38,740 INFO L933 BasicCegarLoop]: 3837 mSDtfsCounter, 5838 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:38,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5838 Valid, 5757 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2022-01-10 12:17:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 2051. [2022-01-10 12:17:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2045 states have (on average 1.671882640586797) internal successors, (3419), 2050 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3419 transitions. [2022-01-10 12:17:38,866 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3419 transitions. Word has length 65 [2022-01-10 12:17:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:38,866 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 3419 transitions. [2022-01-10 12:17:38,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3419 transitions. [2022-01-10 12:17:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:17:38,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:38,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:38,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:17:38,868 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash -3441620, now seen corresponding path program 1 times [2022-01-10 12:17:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:38,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532525072] [2022-01-10 12:17:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:38,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:38,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:38,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532525072] [2022-01-10 12:17:38,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532525072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:38,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:38,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:38,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108036219] [2022-01-10 12:17:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:38,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:38,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:38,990 INFO L87 Difference]: Start difference. First operand 2051 states and 3419 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:40,770 INFO L93 Difference]: Finished difference Result 11328 states and 18306 transitions. [2022-01-10 12:17:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:17:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:40,787 INFO L225 Difference]: With dead ends: 11328 [2022-01-10 12:17:40,787 INFO L226 Difference]: Without dead ends: 10019 [2022-01-10 12:17:40,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:40,791 INFO L933 BasicCegarLoop]: 3458 mSDtfsCounter, 15203 mSDsluCounter, 18335 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15203 SdHoareTripleChecker+Valid, 21793 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:40,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15203 Valid, 21793 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:17:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2022-01-10 12:17:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 3983. [2022-01-10 12:17:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3977 states have (on average 1.676137792305758) internal successors, (6666), 3982 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 6666 transitions. [2022-01-10 12:17:41,121 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 6666 transitions. Word has length 66 [2022-01-10 12:17:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:41,121 INFO L470 AbstractCegarLoop]: Abstraction has 3983 states and 6666 transitions. [2022-01-10 12:17:41,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 6666 transitions. [2022-01-10 12:17:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:17:41,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:41,123 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 12:17:41,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:17:41,124 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2078409554, now seen corresponding path program 1 times [2022-01-10 12:17:41,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:41,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125219445] [2022-01-10 12:17:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:41,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:41,232 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 12:17:41,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125219445] [2022-01-10 12:17:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125219445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:41,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:41,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:41,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012234759] [2022-01-10 12:17:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:41,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:41,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:41,233 INFO L87 Difference]: Start difference. First operand 3983 states and 6666 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 12:17:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:43,624 INFO L93 Difference]: Finished difference Result 19676 states and 31928 transitions. [2022-01-10 12:17:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:43,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 12:17:43,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:43,657 INFO L225 Difference]: With dead ends: 19676 [2022-01-10 12:17:43,658 INFO L226 Difference]: Without dead ends: 17127 [2022-01-10 12:17:43,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:43,665 INFO L933 BasicCegarLoop]: 3322 mSDtfsCounter, 15189 mSDsluCounter, 17630 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15189 SdHoareTripleChecker+Valid, 20952 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:43,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15189 Valid, 20952 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:17:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17127 states. [2022-01-10 12:17:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17127 to 7863. [2022-01-10 12:17:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7863 states, 7857 states have (on average 1.6781214203894617) internal successors, (13185), 7862 states have internal predecessors, (13185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 13185 transitions. [2022-01-10 12:17:44,338 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 13185 transitions. Word has length 67 [2022-01-10 12:17:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:44,339 INFO L470 AbstractCegarLoop]: Abstraction has 7863 states and 13185 transitions. [2022-01-10 12:17:44,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 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 12:17:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 13185 transitions. [2022-01-10 12:17:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:17:44,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:44,343 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 12:17:44,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:17:44,343 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -570857745, now seen corresponding path program 1 times [2022-01-10 12:17:44,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827891544] [2022-01-10 12:17:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:44,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:44,446 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 12:17:44,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:44,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827891544] [2022-01-10 12:17:44,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827891544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:44,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:44,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:44,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140258323] [2022-01-10 12:17:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:44,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:44,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:44,448 INFO L87 Difference]: Start difference. First operand 7863 states and 13185 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 12:17:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:48,316 INFO L93 Difference]: Finished difference Result 42855 states and 69513 transitions. [2022-01-10 12:17:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:48,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 12:17:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:48,386 INFO L225 Difference]: With dead ends: 42855 [2022-01-10 12:17:48,386 INFO L226 Difference]: Without dead ends: 38130 [2022-01-10 12:17:48,400 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 12:17:48,401 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 11877 mSDsluCounter, 6992 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11877 SdHoareTripleChecker+Valid, 8937 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:48,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11877 Valid, 8937 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38130 states. [2022-01-10 12:17:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38130 to 13460. [2022-01-10 12:17:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13460 states, 13454 states have (on average 1.6548238442099004) internal successors, (22264), 13459 states have internal predecessors, (22264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13460 states to 13460 states and 22264 transitions. [2022-01-10 12:17:49,812 INFO L78 Accepts]: Start accepts. Automaton has 13460 states and 22264 transitions. Word has length 67 [2022-01-10 12:17:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:49,812 INFO L470 AbstractCegarLoop]: Abstraction has 13460 states and 22264 transitions. [2022-01-10 12:17:49,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 12:17:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13460 states and 22264 transitions. [2022-01-10 12:17:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:49,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:49,818 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 12:17:49,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:17:49,818 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1791966165, now seen corresponding path program 1 times [2022-01-10 12:17:49,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:49,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022943299] [2022-01-10 12:17:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:49,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:49,916 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 12:17:49,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022943299] [2022-01-10 12:17:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022943299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:49,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:49,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:49,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528773919] [2022-01-10 12:17:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:49,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:49,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:49,918 INFO L87 Difference]: Start difference. First operand 13460 states and 22264 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 12:17:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:54,165 INFO L93 Difference]: Finished difference Result 48046 states and 77694 transitions. [2022-01-10 12:17:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:54,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 12:17:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:54,225 INFO L225 Difference]: With dead ends: 48046 [2022-01-10 12:17:54,225 INFO L226 Difference]: Without dead ends: 38520 [2022-01-10 12:17:54,245 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 12:17:54,245 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 8132 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8132 SdHoareTripleChecker+Valid, 7124 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:54,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8132 Valid, 7124 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38520 states. [2022-01-10 12:17:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38520 to 13632. [2022-01-10 12:17:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13632 states, 13626 states have (on average 1.6505210626742992) internal successors, (22490), 13631 states have internal predecessors, (22490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13632 states to 13632 states and 22490 transitions. [2022-01-10 12:17:55,727 INFO L78 Accepts]: Start accepts. Automaton has 13632 states and 22490 transitions. Word has length 68 [2022-01-10 12:17:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:55,727 INFO L470 AbstractCegarLoop]: Abstraction has 13632 states and 22490 transitions. [2022-01-10 12:17:55,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 12:17:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13632 states and 22490 transitions. [2022-01-10 12:17:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:17:55,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:55,732 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 12:17:55,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:17:55,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2044095915, now seen corresponding path program 1 times [2022-01-10 12:17:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:55,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258002747] [2022-01-10 12:17:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:55,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:55,916 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 12:17:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258002747] [2022-01-10 12:17:55,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258002747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:55,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:55,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063439884] [2022-01-10 12:17:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:55,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:55,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:55,917 INFO L87 Difference]: Start difference. First operand 13632 states and 22490 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 12:18:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:13,161 INFO L93 Difference]: Finished difference Result 137332 states and 221835 transitions. [2022-01-10 12:18:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:18:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 12:18:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:13,408 INFO L225 Difference]: With dead ends: 137332 [2022-01-10 12:18:13,408 INFO L226 Difference]: Without dead ends: 135386 [2022-01-10 12:18:13,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:18:13,448 INFO L933 BasicCegarLoop]: 6396 mSDtfsCounter, 17980 mSDsluCounter, 26781 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17980 SdHoareTripleChecker+Valid, 33177 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:13,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17980 Valid, 33177 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:18:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135386 states. [2022-01-10 12:18:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135386 to 20348. [2022-01-10 12:18:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20348 states, 20342 states have (on average 1.641234883492282) internal successors, (33386), 20347 states have internal predecessors, (33386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20348 states to 20348 states and 33386 transitions. [2022-01-10 12:18:16,786 INFO L78 Accepts]: Start accepts. Automaton has 20348 states and 33386 transitions. Word has length 69 [2022-01-10 12:18:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:16,786 INFO L470 AbstractCegarLoop]: Abstraction has 20348 states and 33386 transitions. [2022-01-10 12:18:16,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 12:18:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 20348 states and 33386 transitions. [2022-01-10 12:18:16,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:18:16,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:16,796 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 12:18:16,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:18:16,796 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash -426081590, now seen corresponding path program 1 times [2022-01-10 12:18:16,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:16,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317114183] [2022-01-10 12:18:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:16,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:16,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:16,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317114183] [2022-01-10 12:18:16,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317114183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:16,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:16,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:18:16,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392647754] [2022-01-10 12:18:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:16,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:18:16,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:18:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:18:16,890 INFO L87 Difference]: Start difference. First operand 20348 states and 33386 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 12:18:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:27,054 INFO L93 Difference]: Finished difference Result 81296 states and 131750 transitions. [2022-01-10 12:18:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:18:27,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 12:18:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:27,164 INFO L225 Difference]: With dead ends: 81296 [2022-01-10 12:18:27,164 INFO L226 Difference]: Without dead ends: 65318 [2022-01-10 12:18:27,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:18:27,191 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 8776 mSDsluCounter, 7846 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8776 SdHoareTripleChecker+Valid, 9753 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:27,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8776 Valid, 9753 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:18:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65318 states. [2022-01-10 12:18:30,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65318 to 21096. [2022-01-10 12:18:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21096 states, 21090 states have (on average 1.6530109056424847) internal successors, (34862), 21095 states have internal predecessors, (34862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21096 states to 21096 states and 34862 transitions. [2022-01-10 12:18:30,388 INFO L78 Accepts]: Start accepts. Automaton has 21096 states and 34862 transitions. Word has length 69 [2022-01-10 12:18:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:30,388 INFO L470 AbstractCegarLoop]: Abstraction has 21096 states and 34862 transitions. [2022-01-10 12:18:30,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 12:18:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21096 states and 34862 transitions. [2022-01-10 12:18:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:18:30,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:30,394 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 12:18:30,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:18:30,394 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:30,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1098365211, now seen corresponding path program 1 times [2022-01-10 12:18:30,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:30,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301129508] [2022-01-10 12:18:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:30,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:30,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:30,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301129508] [2022-01-10 12:18:30,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301129508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:30,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:30,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:18:30,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605568409] [2022-01-10 12:18:30,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:30,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:18:30,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:18:30,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:18:30,494 INFO L87 Difference]: Start difference. First operand 21096 states and 34862 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 12:18:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:36,343 INFO L93 Difference]: Finished difference Result 50586 states and 82547 transitions. [2022-01-10 12:18:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:18:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 12:18:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:36,399 INFO L225 Difference]: With dead ends: 50586 [2022-01-10 12:18:36,399 INFO L226 Difference]: Without dead ends: 32816 [2022-01-10 12:18:36,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 12:18:36,422 INFO L933 BasicCegarLoop]: 2034 mSDtfsCounter, 9231 mSDsluCounter, 5012 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9231 SdHoareTripleChecker+Valid, 7046 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:36,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9231 Valid, 7046 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32816 states.