/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_spec0_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:09:35,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:09:35,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:09:35,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:09:35,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:09:35,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:09:35,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:09:35,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:09:35,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:09:35,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:09:35,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:09:35,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:09:35,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:09:35,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:09:35,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:09:35,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:09:35,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:09:35,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:09:35,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:09:35,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:09:35,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:09:35,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:09:35,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:09:35,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:09:35,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:09:35,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:09:35,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:09:35,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:09:35,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:09:35,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:09:35,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:09:35,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:09:35,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:09:35,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:09:35,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:09:35,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:09:35,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:09:35,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:09:35,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:09:35,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:09:35,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:09:35,405 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 12:09:35,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:09:35,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:09:35,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:09:35,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:09:35,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:09:35,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:09:35,430 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:09:35,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:09:35,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:09:35,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:09:35,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:09:35,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:09:35,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:09:35,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:09:35,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:09:35,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:09:35,435 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:09:35,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:09:35,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:09:35,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:09:35,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:09:35,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:09:35,659 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:09:35,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product19.cil.c [2022-01-10 12:09:35,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e09fc336/c250405fdd6543169491f453462ad3ca/FLAGcaf175613 [2022-01-10 12:09:36,172 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:09:36,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product19.cil.c [2022-01-10 12:09:36,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e09fc336/c250405fdd6543169491f453462ad3ca/FLAGcaf175613 [2022-01-10 12:09:36,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e09fc336/c250405fdd6543169491f453462ad3ca [2022-01-10 12:09:36,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:09:36,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:09:36,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:09:36,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:09:36,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:09:36,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:09:36" (1/1) ... [2022-01-10 12:09:36,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40335191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:36, skipping insertion in model container [2022-01-10 12:09:36,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:09:36" (1/1) ... [2022-01-10 12:09:36,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:09:36,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:09:36,972 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_spec0_product19.cil.c[39319,39332] [2022-01-10 12:09:37,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:37,049 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:09:37,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:09:37,111 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_spec0_product19.cil.c[39319,39332] [2022-01-10 12:09:37,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:37,152 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:09:37,215 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_spec0_product19.cil.c[39319,39332] [2022-01-10 12:09:37,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:37,261 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:09:37,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37 WrapperNode [2022-01-10 12:09:37,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:09:37,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:09:37,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:09:37,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:09:37,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,389 INFO L137 Inliner]: procedures = 129, calls = 198, calls flagged for inlining = 111, calls inlined = 147, statements flattened = 2109 [2022-01-10 12:09:37,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:09:37,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:09:37,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:09:37,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:09:37,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:09:37,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:09:37,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:09:37,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:09:37,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (1/1) ... [2022-01-10 12:09:37,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:09:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:09:37,525 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 12:09:37,530 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 12:09:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:09:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:09:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:09:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:09:37,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:09:37,746 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:09:37,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:09:38,640 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:09:38,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:09:38,655 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:09:38,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:38 BoogieIcfgContainer [2022-01-10 12:09:38,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:09:38,658 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:09:38,658 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:09:38,659 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:09:38,662 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:38" (1/1) ... [2022-01-10 12:09:39,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:09:39 BasicIcfg [2022-01-10 12:09:39,026 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:09:39,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:09:39,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:09:39,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:09:39,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:09:36" (1/4) ... [2022-01-10 12:09:39,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e01180e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:39, skipping insertion in model container [2022-01-10 12:09:39,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:37" (2/4) ... [2022-01-10 12:09:39,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e01180e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:39, skipping insertion in model container [2022-01-10 12:09:39,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:38" (3/4) ... [2022-01-10 12:09:39,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e01180e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:09:39, skipping insertion in model container [2022-01-10 12:09:39,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:09:39" (4/4) ... [2022-01-10 12:09:39,032 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product19.cil.cTransformedIcfg [2022-01-10 12:09:39,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:09:39,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:09:39,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:09:39,077 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 12:09:39,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:09:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 476 states, 473 states have (on average 1.6765327695560253) internal successors, (793), 475 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:09:39,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:39,123 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] [2022-01-10 12:09:39,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 337015886, now seen corresponding path program 1 times [2022-01-10 12:09:39,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:39,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957041798] [2022-01-10 12:09:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:39,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:39,441 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 12:09:39,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:39,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957041798] [2022-01-10 12:09:39,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957041798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:39,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:39,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:09:39,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970700184] [2022-01-10 12:09:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:39,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:09:39,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:09:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:09:39,468 INFO L87 Difference]: Start difference. First operand has 476 states, 473 states have (on average 1.6765327695560253) internal successors, (793), 475 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:39,503 INFO L93 Difference]: Finished difference Result 691 states and 1126 transitions. [2022-01-10 12:09:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:09:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 12:09:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:39,514 INFO L225 Difference]: With dead ends: 691 [2022-01-10 12:09:39,515 INFO L226 Difference]: Without dead ends: 438 [2022-01-10 12:09:39,518 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 12:09:39,520 INFO L933 BasicCegarLoop]: 787 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, 787 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 12:09:39,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-10 12:09:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-01-10 12:09:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.688073394495413) internal successors, (736), 437 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 736 transitions. [2022-01-10 12:09:39,569 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 736 transitions. Word has length 55 [2022-01-10 12:09:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:39,569 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 736 transitions. [2022-01-10 12:09:39,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 736 transitions. [2022-01-10 12:09:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:09:39,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:39,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:39,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:09:39,572 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1552066811, now seen corresponding path program 1 times [2022-01-10 12:09:39,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:39,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936883266] [2022-01-10 12:09:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:39,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:39,790 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 12:09:39,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:39,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936883266] [2022-01-10 12:09:39,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936883266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:39,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:39,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:39,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106590378] [2022-01-10 12:09:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:39,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:39,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:39,793 INFO L87 Difference]: Start difference. First operand 438 states and 736 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:39,901 INFO L93 Difference]: Finished difference Result 857 states and 1444 transitions. [2022-01-10 12:09:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:09:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:39,907 INFO L225 Difference]: With dead ends: 857 [2022-01-10 12:09:39,907 INFO L226 Difference]: Without dead ends: 438 [2022-01-10 12:09:39,909 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 12:09:39,909 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 711 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:39,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 730 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-01-10 12:09:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-01-10 12:09:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.68348623853211) internal successors, (734), 437 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 734 transitions. [2022-01-10 12:09:39,950 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 734 transitions. Word has length 56 [2022-01-10 12:09:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:39,950 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 734 transitions. [2022-01-10 12:09:39,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 734 transitions. [2022-01-10 12:09:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:09:39,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:39,952 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 12:09:39,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:09:39,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -376835525, now seen corresponding path program 1 times [2022-01-10 12:09:39,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:39,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32959261] [2022-01-10 12:09:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:39,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:40,095 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 12:09:40,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:40,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32959261] [2022-01-10 12:09:40,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32959261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:40,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:40,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:09:40,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480833561] [2022-01-10 12:09:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:40,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:09:40,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:09:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:40,099 INFO L87 Difference]: Start difference. First operand 438 states and 734 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:40,375 INFO L93 Difference]: Finished difference Result 2058 states and 3466 transitions. [2022-01-10 12:09:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:09:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:09:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:40,385 INFO L225 Difference]: With dead ends: 2058 [2022-01-10 12:09:40,386 INFO L226 Difference]: Without dead ends: 1644 [2022-01-10 12:09:40,393 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 12:09:40,395 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 3453 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3465 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 12:09:40,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3453 Valid, 3465 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-01-10 12:09:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 438. [2022-01-10 12:09:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.6811926605504588) internal successors, (733), 437 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 733 transitions. [2022-01-10 12:09:40,436 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 733 transitions. Word has length 58 [2022-01-10 12:09:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:40,436 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 733 transitions. [2022-01-10 12:09:40,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 733 transitions. [2022-01-10 12:09:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:09:40,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:40,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:40,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:09:40,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1822224905, now seen corresponding path program 1 times [2022-01-10 12:09:40,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:40,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67971246] [2022-01-10 12:09:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:40,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:40,553 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 12:09:40,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:40,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67971246] [2022-01-10 12:09:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67971246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:40,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:40,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:40,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349454219] [2022-01-10 12:09:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:40,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:40,557 INFO L87 Difference]: Start difference. First operand 438 states and 733 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:40,601 INFO L93 Difference]: Finished difference Result 861 states and 1444 transitions. [2022-01-10 12:09:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 12:09:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:40,604 INFO L225 Difference]: With dead ends: 861 [2022-01-10 12:09:40,604 INFO L226 Difference]: Without dead ends: 452 [2022-01-10 12:09:40,605 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 12:09:40,613 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 712 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 769 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 12:09:40,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 769 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-01-10 12:09:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 438. [2022-01-10 12:09:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.6788990825688073) internal successors, (732), 437 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 732 transitions. [2022-01-10 12:09:40,647 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 732 transitions. Word has length 59 [2022-01-10 12:09:40,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:40,649 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 732 transitions. [2022-01-10 12:09:40,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 732 transitions. [2022-01-10 12:09:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:09:40,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:40,650 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 12:09:40,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:09:40,651 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash -527022022, now seen corresponding path program 1 times [2022-01-10 12:09:40,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:40,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073083634] [2022-01-10 12:09:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:40,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:40,796 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 12:09:40,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:40,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073083634] [2022-01-10 12:09:40,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073083634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:40,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:40,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:09:40,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904470898] [2022-01-10 12:09:40,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:40,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:09:40,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:09:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:40,798 INFO L87 Difference]: Start difference. First operand 438 states and 732 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 12:09:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:40,942 INFO L93 Difference]: Finished difference Result 1248 states and 2096 transitions. [2022-01-10 12:09:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:09:40,942 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 12:09:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:40,945 INFO L225 Difference]: With dead ends: 1248 [2022-01-10 12:09:40,946 INFO L226 Difference]: Without dead ends: 844 [2022-01-10 12:09:40,947 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 12:09:40,947 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 3376 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:40,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3376 Valid, 1496 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-01-10 12:09:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 438. [2022-01-10 12:09:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.6743119266055047) internal successors, (730), 437 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 730 transitions. [2022-01-10 12:09:40,978 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 730 transitions. Word has length 60 [2022-01-10 12:09:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:40,978 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 730 transitions. [2022-01-10 12:09:40,978 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 12:09:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 730 transitions. [2022-01-10 12:09:40,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:09:40,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:40,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:40,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:09:40,980 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:40,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1045121539, now seen corresponding path program 1 times [2022-01-10 12:09:40,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:40,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270328730] [2022-01-10 12:09:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:40,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:41,101 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 12:09:41,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270328730] [2022-01-10 12:09:41,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270328730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:41,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:41,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:09:41,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560890762] [2022-01-10 12:09:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:41,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:09:41,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:09:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:09:41,102 INFO L87 Difference]: Start difference. First operand 438 states and 730 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:41,385 INFO L93 Difference]: Finished difference Result 2120 states and 3514 transitions. [2022-01-10 12:09:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:09:41,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:09:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:41,394 INFO L225 Difference]: With dead ends: 2120 [2022-01-10 12:09:41,394 INFO L226 Difference]: Without dead ends: 1960 [2022-01-10 12:09:41,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:09:41,397 INFO L933 BasicCegarLoop]: 1035 mSDtfsCounter, 3703 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 4915 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:41,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 4915 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-01-10 12:09:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 797. [2022-01-10 12:09:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 795 states have (on average 1.679245283018868) internal successors, (1335), 796 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1335 transitions. [2022-01-10 12:09:41,471 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1335 transitions. Word has length 62 [2022-01-10 12:09:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:41,473 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1335 transitions. [2022-01-10 12:09:41,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1335 transitions. [2022-01-10 12:09:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:09:41,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:41,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:41,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:09:41,475 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 180357881, now seen corresponding path program 1 times [2022-01-10 12:09:41,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:41,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561890100] [2022-01-10 12:09:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:41,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:41,607 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 12:09:41,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:41,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561890100] [2022-01-10 12:09:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561890100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:41,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:09:41,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769989129] [2022-01-10 12:09:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:09:41,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:09:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:09:41,610 INFO L87 Difference]: Start difference. First operand 797 states and 1335 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:41,955 INFO L93 Difference]: Finished difference Result 3745 states and 6243 transitions. [2022-01-10 12:09:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:09:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:09:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:41,979 INFO L225 Difference]: With dead ends: 3745 [2022-01-10 12:09:41,979 INFO L226 Difference]: Without dead ends: 3492 [2022-01-10 12:09:41,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:09:41,982 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 3699 mSDsluCounter, 3062 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:41,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3699 Valid, 4030 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-01-10 12:09:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 1492. [2022-01-10 12:09:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1490 states have (on average 1.6879194630872483) internal successors, (2515), 1491 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2515 transitions. [2022-01-10 12:09:42,082 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2515 transitions. Word has length 63 [2022-01-10 12:09:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:42,082 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 2515 transitions. [2022-01-10 12:09:42,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2515 transitions. [2022-01-10 12:09:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:09:42,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:42,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:42,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:09:42,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -55693553, now seen corresponding path program 1 times [2022-01-10 12:09:42,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614049372] [2022-01-10 12:09:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:42,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:42,164 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 12:09:42,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:42,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614049372] [2022-01-10 12:09:42,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614049372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:42,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:42,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:09:42,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828821953] [2022-01-10 12:09:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:42,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:09:42,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:09:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:42,166 INFO L87 Difference]: Start difference. First operand 1492 states and 2515 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:42,409 INFO L93 Difference]: Finished difference Result 4288 states and 7285 transitions. [2022-01-10 12:09:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:09:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:09:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:42,419 INFO L225 Difference]: With dead ends: 4288 [2022-01-10 12:09:42,419 INFO L226 Difference]: Without dead ends: 2846 [2022-01-10 12:09:42,423 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 12:09:42,424 INFO L933 BasicCegarLoop]: 1363 mSDtfsCounter, 2127 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:42,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 2046 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-10 12:09:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1492. [2022-01-10 12:09:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1490 states have (on average 1.6865771812080537) internal successors, (2513), 1491 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2513 transitions. [2022-01-10 12:09:42,512 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2513 transitions. Word has length 63 [2022-01-10 12:09:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:42,512 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 2513 transitions. [2022-01-10 12:09:42,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2513 transitions. [2022-01-10 12:09:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:09:42,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:42,515 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 12:09:42,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:09:42,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2043090547, now seen corresponding path program 1 times [2022-01-10 12:09:42,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:42,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739242780] [2022-01-10 12:09:42,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:42,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:42,592 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 12:09:42,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739242780] [2022-01-10 12:09:42,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739242780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:42,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:42,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:09:42,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116247082] [2022-01-10 12:09:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:42,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:09:42,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:09:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:09:42,594 INFO L87 Difference]: Start difference. First operand 1492 states and 2513 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 12:09:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:43,116 INFO L93 Difference]: Finished difference Result 6940 states and 11641 transitions. [2022-01-10 12:09:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:09:43,116 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 12:09:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:43,139 INFO L225 Difference]: With dead ends: 6940 [2022-01-10 12:09:43,139 INFO L226 Difference]: Without dead ends: 6504 [2022-01-10 12:09:43,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:09:43,142 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 3637 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:43,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 4074 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:43,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2022-01-10 12:09:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 2843. [2022-01-10 12:09:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2841 states have (on average 1.6990496304118268) internal successors, (4827), 2842 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4827 transitions. [2022-01-10 12:09:43,323 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4827 transitions. Word has length 64 [2022-01-10 12:09:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:43,323 INFO L470 AbstractCegarLoop]: Abstraction has 2843 states and 4827 transitions. [2022-01-10 12:09:43,323 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 12:09:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4827 transitions. [2022-01-10 12:09:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:09:43,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:43,328 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 12:09:43,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:09:43,328 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -798326066, now seen corresponding path program 1 times [2022-01-10 12:09:43,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399375336] [2022-01-10 12:09:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:43,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:43,406 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 12:09:43,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:43,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399375336] [2022-01-10 12:09:43,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399375336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:43,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:43,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:09:43,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008081297] [2022-01-10 12:09:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:43,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:09:43,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:09:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:09:43,407 INFO L87 Difference]: Start difference. First operand 2843 states and 4827 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:43,561 INFO L93 Difference]: Finished difference Result 3310 states and 5498 transitions. [2022-01-10 12:09:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:09:43,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:09:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:43,571 INFO L225 Difference]: With dead ends: 3310 [2022-01-10 12:09:43,571 INFO L226 Difference]: Without dead ends: 2843 [2022-01-10 12:09:43,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:43,573 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 453 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:43,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1709 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-01-10 12:09:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2843. [2022-01-10 12:09:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2841 states have (on average 1.695881731784583) internal successors, (4818), 2842 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4818 transitions. [2022-01-10 12:09:43,750 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4818 transitions. Word has length 64 [2022-01-10 12:09:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:43,750 INFO L470 AbstractCegarLoop]: Abstraction has 2843 states and 4818 transitions. [2022-01-10 12:09:43,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4818 transitions. [2022-01-10 12:09:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:09:43,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:43,755 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 12:09:43,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:09:43,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1740463934, now seen corresponding path program 1 times [2022-01-10 12:09:43,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:43,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426255915] [2022-01-10 12:09:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:43,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:43,899 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 12:09:43,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426255915] [2022-01-10 12:09:43,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426255915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:43,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:43,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:09:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939495544] [2022-01-10 12:09:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:09:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:09:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:09:43,901 INFO L87 Difference]: Start difference. First operand 2843 states and 4818 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:45,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:45,073 INFO L93 Difference]: Finished difference Result 7802 states and 11933 transitions. [2022-01-10 12:09:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 12:09:45,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:09:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:45,103 INFO L225 Difference]: With dead ends: 7802 [2022-01-10 12:09:45,103 INFO L226 Difference]: Without dead ends: 7383 [2022-01-10 12:09:45,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 12:09:45,107 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 5861 mSDsluCounter, 6022 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5861 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:45,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5861 Valid, 6771 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:09:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7383 states. [2022-01-10 12:09:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7383 to 4038. [2022-01-10 12:09:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4036 states have (on average 1.6560951437066402) internal successors, (6684), 4037 states have internal predecessors, (6684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6684 transitions. [2022-01-10 12:09:45,424 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6684 transitions. Word has length 67 [2022-01-10 12:09:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:45,424 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 6684 transitions. [2022-01-10 12:09:45,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6684 transitions. [2022-01-10 12:09:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:09:45,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:45,431 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 12:09:45,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:09:45,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash -828025011, now seen corresponding path program 1 times [2022-01-10 12:09:45,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:45,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118057870] [2022-01-10 12:09:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:45,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:45,522 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 12:09:45,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:45,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118057870] [2022-01-10 12:09:45,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118057870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:45,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:45,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:09:45,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763460201] [2022-01-10 12:09:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:45,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:09:45,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:09:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:45,524 INFO L87 Difference]: Start difference. First operand 4038 states and 6684 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:46,391 INFO L93 Difference]: Finished difference Result 10018 states and 16040 transitions. [2022-01-10 12:09:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:09:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:09:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:46,409 INFO L225 Difference]: With dead ends: 10018 [2022-01-10 12:09:46,409 INFO L226 Difference]: Without dead ends: 9222 [2022-01-10 12:09:46,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:09:46,414 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1382 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:46,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 2932 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2022-01-10 12:09:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 8030. [2022-01-10 12:09:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 8028 states have (on average 1.656576980568012) internal successors, (13299), 8029 states have internal predecessors, (13299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 13299 transitions. [2022-01-10 12:09:47,007 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 13299 transitions. Word has length 68 [2022-01-10 12:09:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:47,007 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 13299 transitions. [2022-01-10 12:09:47,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 13299 transitions. [2022-01-10 12:09:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:09:47,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:47,017 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 12:09:47,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:09:47,017 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash 83499321, now seen corresponding path program 1 times [2022-01-10 12:09:47,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:47,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894053201] [2022-01-10 12:09:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:47,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:47,098 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 12:09:47,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:47,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894053201] [2022-01-10 12:09:47,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894053201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:47,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:47,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:09:47,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598398728] [2022-01-10 12:09:47,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:47,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:09:47,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:09:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:09:47,100 INFO L87 Difference]: Start difference. First operand 8030 states and 13299 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 12:09:47,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:47,910 INFO L93 Difference]: Finished difference Result 11990 states and 19100 transitions. [2022-01-10 12:09:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:09:47,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 12:09:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:47,927 INFO L225 Difference]: With dead ends: 11990 [2022-01-10 12:09:47,927 INFO L226 Difference]: Without dead ends: 9074 [2022-01-10 12:09:47,933 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 12:09:47,934 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1419 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:47,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 3361 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2022-01-10 12:09:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 8030. [2022-01-10 12:09:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8030 states, 8028 states have (on average 1.6525909317389138) internal successors, (13267), 8029 states have internal predecessors, (13267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 13267 transitions. [2022-01-10 12:09:48,725 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 13267 transitions. Word has length 68 [2022-01-10 12:09:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:48,725 INFO L470 AbstractCegarLoop]: Abstraction has 8030 states and 13267 transitions. [2022-01-10 12:09:48,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 12:09:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 13267 transitions. [2022-01-10 12:09:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:09:48,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:48,736 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 12:09:48,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:09:48,736 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -913573032, now seen corresponding path program 1 times [2022-01-10 12:09:48,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673340549] [2022-01-10 12:09:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:48,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:48,817 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 12:09:48,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:48,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673340549] [2022-01-10 12:09:48,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673340549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:48,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:48,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:09:48,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460413201] [2022-01-10 12:09:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:48,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:09:48,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:48,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:09:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:09:48,819 INFO L87 Difference]: Start difference. First operand 8030 states and 13267 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 12:09:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:49,852 INFO L93 Difference]: Finished difference Result 12101 states and 19044 transitions. [2022-01-10 12:09:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:09:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 12:09:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:49,869 INFO L225 Difference]: With dead ends: 12101 [2022-01-10 12:09:49,869 INFO L226 Difference]: Without dead ends: 10288 [2022-01-10 12:09:49,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:09:49,875 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 604 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:49,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 4387 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2022-01-10 12:09:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 8670. [2022-01-10 12:09:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 8668 states have (on average 1.642939547761883) internal successors, (14241), 8669 states have internal predecessors, (14241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 14241 transitions. [2022-01-10 12:09:50,482 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 14241 transitions. Word has length 68 [2022-01-10 12:09:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:50,482 INFO L470 AbstractCegarLoop]: Abstraction has 8670 states and 14241 transitions. [2022-01-10 12:09:50,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 12:09:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 14241 transitions. [2022-01-10 12:09:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:09:50,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:50,491 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 12:09:50,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:09:50,491 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 734765171, now seen corresponding path program 1 times [2022-01-10 12:09:50,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:50,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591591833] [2022-01-10 12:09:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:50,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:50,563 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 12:09:50,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591591833] [2022-01-10 12:09:50,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591591833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:50,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:50,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:09:50,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001625634] [2022-01-10 12:09:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:09:50,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:09:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:09:50,564 INFO L87 Difference]: Start difference. First operand 8670 states and 14241 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:51,439 INFO L93 Difference]: Finished difference Result 12198 states and 19495 transitions. [2022-01-10 12:09:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:09:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:09:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:51,455 INFO L225 Difference]: With dead ends: 12198 [2022-01-10 12:09:51,456 INFO L226 Difference]: Without dead ends: 9728 [2022-01-10 12:09:51,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:51,464 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 686 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:51,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1770 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2022-01-10 12:09:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 8670. [2022-01-10 12:09:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 8668 states have (on average 1.6410936778957084) internal successors, (14225), 8669 states have internal predecessors, (14225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 14225 transitions. [2022-01-10 12:09:52,265 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 14225 transitions. Word has length 68 [2022-01-10 12:09:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:52,265 INFO L470 AbstractCegarLoop]: Abstraction has 8670 states and 14225 transitions. [2022-01-10 12:09:52,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 14225 transitions. [2022-01-10 12:09:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:09:52,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:52,277 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 12:09:52,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:09:52,277 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1085565108, now seen corresponding path program 1 times [2022-01-10 12:09:52,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:52,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279019688] [2022-01-10 12:09:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:52,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:52,378 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 12:09:52,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:52,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279019688] [2022-01-10 12:09:52,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279019688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:52,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:09:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296781335] [2022-01-10 12:09:52,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:52,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:09:52,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:09:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:09:52,381 INFO L87 Difference]: Start difference. First operand 8670 states and 14225 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 12:09:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:53,530 INFO L93 Difference]: Finished difference Result 11195 states and 17626 transitions. [2022-01-10 12:09:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:09:53,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 12:09:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:53,549 INFO L225 Difference]: With dead ends: 11195 [2022-01-10 12:09:53,549 INFO L226 Difference]: Without dead ends: 10278 [2022-01-10 12:09:53,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 12:09:53,556 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1271 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 5215 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:53,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 5215 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2022-01-10 12:09:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 8224. [2022-01-10 12:09:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8224 states, 8222 states have (on average 1.627219654585259) internal successors, (13379), 8223 states have internal predecessors, (13379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8224 states to 8224 states and 13379 transitions. [2022-01-10 12:09:54,271 INFO L78 Accepts]: Start accepts. Automaton has 8224 states and 13379 transitions. Word has length 68 [2022-01-10 12:09:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:54,271 INFO L470 AbstractCegarLoop]: Abstraction has 8224 states and 13379 transitions. [2022-01-10 12:09:54,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 12:09:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8224 states and 13379 transitions. [2022-01-10 12:09:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:09:54,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:54,280 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 12:09:54,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:09:54,280 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1301374512, now seen corresponding path program 1 times [2022-01-10 12:09:54,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:54,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347604598] [2022-01-10 12:09:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:54,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:54,377 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 12:09:54,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:54,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347604598] [2022-01-10 12:09:54,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347604598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:54,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:54,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:09:54,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341881034] [2022-01-10 12:09:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:54,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:09:54,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:09:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:09:54,378 INFO L87 Difference]: Start difference. First operand 8224 states and 13379 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 12:09:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:55,544 INFO L93 Difference]: Finished difference Result 9964 states and 15760 transitions. [2022-01-10 12:09:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 12:09:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 12:09:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:55,558 INFO L225 Difference]: With dead ends: 9964 [2022-01-10 12:09:55,558 INFO L226 Difference]: Without dead ends: 8353 [2022-01-10 12:09:55,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2022-01-10 12:09:55,563 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 3878 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3878 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:55,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3878 Valid, 4613 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8353 states. [2022-01-10 12:09:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8353 to 7139. [2022-01-10 12:09:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7139 states, 7137 states have (on average 1.653075521927981) internal successors, (11798), 7138 states have internal predecessors, (11798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 11798 transitions. [2022-01-10 12:09:56,254 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 11798 transitions. Word has length 69 [2022-01-10 12:09:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:56,254 INFO L470 AbstractCegarLoop]: Abstraction has 7139 states and 11798 transitions. [2022-01-10 12:09:56,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 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 12:09:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 11798 transitions. [2022-01-10 12:09:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:09:56,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:56,265 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:56,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:09:56,266 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:56,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -895983767, now seen corresponding path program 1 times [2022-01-10 12:09:56,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:56,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591018510] [2022-01-10 12:09:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:56,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:56,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:56,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591018510] [2022-01-10 12:09:56,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591018510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:56,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:56,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:56,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490444902] [2022-01-10 12:09:56,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:56,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:56,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:56,321 INFO L87 Difference]: Start difference. First operand 7139 states and 11798 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:57,497 INFO L93 Difference]: Finished difference Result 20389 states and 33622 transitions. [2022-01-10 12:09:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:57,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:09:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:57,526 INFO L225 Difference]: With dead ends: 20389 [2022-01-10 12:09:57,526 INFO L226 Difference]: Without dead ends: 13348 [2022-01-10 12:09:57,543 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 12:09:57,543 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 668 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:57,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1340 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2022-01-10 12:09:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 9859. [2022-01-10 12:09:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9859 states, 9857 states have (on average 1.6887491123059755) internal successors, (16646), 9858 states have internal predecessors, (16646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9859 states to 9859 states and 16646 transitions. [2022-01-10 12:09:58,254 INFO L78 Accepts]: Start accepts. Automaton has 9859 states and 16646 transitions. Word has length 82 [2022-01-10 12:09:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:58,255 INFO L470 AbstractCegarLoop]: Abstraction has 9859 states and 16646 transitions. [2022-01-10 12:09:58,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 9859 states and 16646 transitions. [2022-01-10 12:09:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:09:58,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:58,269 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:58,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:09:58,269 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -997382766, now seen corresponding path program 1 times [2022-01-10 12:09:58,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:58,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942525535] [2022-01-10 12:09:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:58,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:58,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942525535] [2022-01-10 12:09:58,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942525535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:58,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:58,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:58,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619369432] [2022-01-10 12:09:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:58,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:58,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:58,322 INFO L87 Difference]: Start difference. First operand 9859 states and 16646 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:59,716 INFO L93 Difference]: Finished difference Result 29349 states and 49638 transitions. [2022-01-10 12:09:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 12:09:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:59,754 INFO L225 Difference]: With dead ends: 29349 [2022-01-10 12:09:59,754 INFO L226 Difference]: Without dead ends: 19588 [2022-01-10 12:09:59,772 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 12:09:59,773 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 666 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:59,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 1434 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19588 states. [2022-01-10 12:10:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19588 to 16099. [2022-01-10 12:10:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16099 states, 16097 states have (on average 1.7269056345902962) internal successors, (27798), 16098 states have internal predecessors, (27798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16099 states to 16099 states and 27798 transitions. [2022-01-10 12:10:00,859 INFO L78 Accepts]: Start accepts. Automaton has 16099 states and 27798 transitions. Word has length 83 [2022-01-10 12:10:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:00,860 INFO L470 AbstractCegarLoop]: Abstraction has 16099 states and 27798 transitions. [2022-01-10 12:10:00,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 16099 states and 27798 transitions. [2022-01-10 12:10:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:10:00,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:00,885 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:00,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:10:00,885 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2027711536, now seen corresponding path program 1 times [2022-01-10 12:10:00,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:00,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843094968] [2022-01-10 12:10:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:00,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:00,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:00,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843094968] [2022-01-10 12:10:00,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843094968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:00,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:00,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:00,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948123340] [2022-01-10 12:10:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:00,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:00,935 INFO L87 Difference]: Start difference. First operand 16099 states and 27798 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:02,919 INFO L93 Difference]: Finished difference Result 47717 states and 82518 transitions. [2022-01-10 12:10:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:10:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:02,987 INFO L225 Difference]: With dead ends: 47717 [2022-01-10 12:10:02,988 INFO L226 Difference]: Without dead ends: 31716 [2022-01-10 12:10:03,009 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 12:10:03,010 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 664 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:03,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 1426 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31716 states. [2022-01-10 12:10:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31716 to 28227. [2022-01-10 12:10:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28227 states, 28225 states have (on average 1.7535518157661647) internal successors, (49494), 28226 states have internal predecessors, (49494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28227 states to 28227 states and 49494 transitions. [2022-01-10 12:10:04,732 INFO L78 Accepts]: Start accepts. Automaton has 28227 states and 49494 transitions. Word has length 84 [2022-01-10 12:10:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:04,733 INFO L470 AbstractCegarLoop]: Abstraction has 28227 states and 49494 transitions. [2022-01-10 12:10:04,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 28227 states and 49494 transitions. [2022-01-10 12:10:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:10:04,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:04,766 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:04,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:10:04,766 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1451758380, now seen corresponding path program 1 times [2022-01-10 12:10:04,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:04,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734516478] [2022-01-10 12:10:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:04,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:04,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:04,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734516478] [2022-01-10 12:10:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734516478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:04,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:04,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:04,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705973156] [2022-01-10 12:10:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:04,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:04,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:04,828 INFO L87 Difference]: Start difference. First operand 28227 states and 49494 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:08,123 INFO L93 Difference]: Finished difference Result 80389 states and 140822 transitions. [2022-01-10 12:10:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 12:10:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:08,259 INFO L225 Difference]: With dead ends: 80389 [2022-01-10 12:10:08,259 INFO L226 Difference]: Without dead ends: 52260 [2022-01-10 12:10:08,295 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 12:10:08,295 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 662 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:08,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 1378 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52260 states. [2022-01-10 12:10:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52260 to 48771. [2022-01-10 12:10:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48771 states, 48769 states have (on average 1.7641944677971662) internal successors, (86038), 48770 states have internal predecessors, (86038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48771 states to 48771 states and 86038 transitions. [2022-01-10 12:10:11,420 INFO L78 Accepts]: Start accepts. Automaton has 48771 states and 86038 transitions. Word has length 85 [2022-01-10 12:10:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:11,420 INFO L470 AbstractCegarLoop]: Abstraction has 48771 states and 86038 transitions. [2022-01-10 12:10:11,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 48771 states and 86038 transitions. [2022-01-10 12:10:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:10:11,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:11,468 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:11,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:10:11,468 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1737136282, now seen corresponding path program 1 times [2022-01-10 12:10:11,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:11,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468827774] [2022-01-10 12:10:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:11,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:11,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:11,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468827774] [2022-01-10 12:10:11,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468827774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:11,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:11,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:11,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047320684] [2022-01-10 12:10:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:11,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:11,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:11,521 INFO L87 Difference]: Start difference. First operand 48771 states and 86038 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:16,572 INFO L93 Difference]: Finished difference Result 137925 states and 243030 transitions. [2022-01-10 12:10:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:16,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 12:10:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:16,734 INFO L225 Difference]: With dead ends: 137925 [2022-01-10 12:10:16,735 INFO L226 Difference]: Without dead ends: 89252 [2022-01-10 12:10:16,774 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 12:10:16,775 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 660 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:16,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1378 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89252 states. [2022-01-10 12:10:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89252 to 85763. [2022-01-10 12:10:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85763 states, 85761 states have (on average 1.7674001002786814) internal successors, (151574), 85762 states have internal predecessors, (151574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85763 states to 85763 states and 151574 transitions. [2022-01-10 12:10:21,872 INFO L78 Accepts]: Start accepts. Automaton has 85763 states and 151574 transitions. Word has length 86 [2022-01-10 12:10:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:21,872 INFO L470 AbstractCegarLoop]: Abstraction has 85763 states and 151574 transitions. [2022-01-10 12:10:21,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 85763 states and 151574 transitions. [2022-01-10 12:10:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:10:21,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:21,928 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:21,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:10:21,928 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:21,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1326290209, now seen corresponding path program 1 times [2022-01-10 12:10:21,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:21,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080546633] [2022-01-10 12:10:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:21,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 12:10:22,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:22,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080546633] [2022-01-10 12:10:22,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080546633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:22,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:22,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:10:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531639244] [2022-01-10 12:10:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:22,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:10:22,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:10:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:10:22,042 INFO L87 Difference]: Start difference. First operand 85763 states and 151574 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:26,510 INFO L93 Difference]: Finished difference Result 85957 states and 151841 transitions. [2022-01-10 12:10:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:10:26,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 12:10:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:26,511 INFO L225 Difference]: With dead ends: 85957 [2022-01-10 12:10:26,511 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:10:26,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:26,554 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 369 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:26,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 1988 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:10:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:10:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:10:26,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2022-01-10 12:10:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:26,555 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:10:26,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:10:26,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:10:26,557 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 12:10:26,557 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 12:10:26,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:10:26,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.