/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_spec6_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:18:01,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:18:01,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:18:01,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:18:01,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:18:01,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:18:01,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:18:01,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:18:01,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:18:01,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:18:01,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:18:01,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:18:01,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:18:01,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:18:01,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:18:01,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:18:01,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:18:01,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:18:01,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:18:01,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:18:01,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:18:01,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:18:01,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:18:01,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:18:01,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:18:01,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:18:01,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:18:01,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:18:01,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:18:01,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:18:01,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:18:01,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:18:01,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:18:01,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:18:01,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:18:01,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:18:01,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:18:01,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:18:01,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:18:01,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:18:01,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:18:01,508 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 12:18:01,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:18:01,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:18:01,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:18:01,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:18:01,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:18:01,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:18:01,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:18:01,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:18:01,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:18:01,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:18:01,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:18:01,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:18:01,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:18:01,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:18:01,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:18:01,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:18:01,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:18:01,533 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:18:01,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:18:01,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:18:01,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:18:01,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:18:01,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:18:01,771 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:18:01,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product20.cil.c [2022-01-10 12:18:01,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9873365/32c8cd919a6142f7aaabed8e2a4445b4/FLAG5ea8fa43c [2022-01-10 12:18:02,257 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:18:02,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product20.cil.c [2022-01-10 12:18:02,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9873365/32c8cd919a6142f7aaabed8e2a4445b4/FLAG5ea8fa43c [2022-01-10 12:18:02,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9873365/32c8cd919a6142f7aaabed8e2a4445b4 [2022-01-10 12:18:02,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:18:02,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:18:02,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:18:02,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:18:02,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:18:02,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:18:02" (1/1) ... [2022-01-10 12:18:02,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408bf6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:02, skipping insertion in model container [2022-01-10 12:18:02,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:18:02" (1/1) ... [2022-01-10 12:18:02,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:18:02,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:18:02,779 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_spec6_product20.cil.c[56376,56389] [2022-01-10 12:18:02,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:18:02,824 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:18:02,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:18:02,905 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_spec6_product20.cil.c[56376,56389] [2022-01-10 12:18:02,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:18:02,923 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:18:03,000 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_spec6_product20.cil.c[56376,56389] [2022-01-10 12:18:03,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:18:03,027 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:18:03,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03 WrapperNode [2022-01-10 12:18:03,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:18:03,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:18:03,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:18:03,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:18:03,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,185 INFO L137 Inliner]: procedures = 131, calls = 222, calls flagged for inlining = 128, calls inlined = 282, statements flattened = 4294 [2022-01-10 12:18:03,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:18:03,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:18:03,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:18:03,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:18:03,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:18:03,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:18:03,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:18:03,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:18:03,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (1/1) ... [2022-01-10 12:18:03,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:18:03,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:18:03,343 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 12:18:03,359 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 12:18:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:18:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:18:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:18:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:18:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:18:03,576 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:18:03,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:18:05,116 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:18:05,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:18:05,125 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:18:05,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:18:05 BoogieIcfgContainer [2022-01-10 12:18:05,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:18:05,128 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:18:05,128 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:18:05,129 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:18:05,130 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:18:05" (1/1) ... [2022-01-10 12:18:05,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:18:05 BasicIcfg [2022-01-10 12:18:05,448 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:18:05,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:18:05,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:18:05,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:18:05,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:18:02" (1/4) ... [2022-01-10 12:18:05,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a163a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:18:05, skipping insertion in model container [2022-01-10 12:18:05,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:18:03" (2/4) ... [2022-01-10 12:18:05,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a163a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:18:05, skipping insertion in model container [2022-01-10 12:18:05,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:18:05" (3/4) ... [2022-01-10 12:18:05,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a163a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:18:05, skipping insertion in model container [2022-01-10 12:18:05,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:18:05" (4/4) ... [2022-01-10 12:18:05,454 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product20.cil.cTransformedIcfg [2022-01-10 12:18:05,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:18:05,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:18:05,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:18:05,500 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 12:18:05,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:18:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 970 states, 963 states have (on average 1.6905503634475596) internal successors, (1628), 969 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:18:05,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:05,539 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 12:18:05,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash -383943489, now seen corresponding path program 1 times [2022-01-10 12:18:05,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:05,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161396492] [2022-01-10 12:18:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:05,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:05,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:05,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161396492] [2022-01-10 12:18:05,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161396492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:05,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:05,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:18:05,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046303937] [2022-01-10 12:18:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:05,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:18:05,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:18:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:18:05,987 INFO L87 Difference]: Start difference. First operand has 970 states, 963 states have (on average 1.6905503634475596) internal successors, (1628), 969 states have internal predecessors, (1628), 0 states have call successors, (0), 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 30.0) internal successors, (60), 2 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 12:18:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:06,059 INFO L93 Difference]: Finished difference Result 1631 states and 2709 transitions. [2022-01-10 12:18:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:18:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 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 12:18:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:06,091 INFO L225 Difference]: With dead ends: 1631 [2022-01-10 12:18:06,091 INFO L226 Difference]: Without dead ends: 869 [2022-01-10 12:18:06,098 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 12:18:06,102 INFO L933 BasicCegarLoop]: 1614 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, 1614 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 12:18:06,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-01-10 12:18:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2022-01-10 12:18:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.6987253765932793) internal successors, (1466), 868 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1466 transitions. [2022-01-10 12:18:06,178 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1466 transitions. Word has length 60 [2022-01-10 12:18:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:06,178 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1466 transitions. [2022-01-10 12:18:06,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 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 12:18:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1466 transitions. [2022-01-10 12:18:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:18:06,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:06,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:06,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:18:06,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692235, now seen corresponding path program 1 times [2022-01-10 12:18:06,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457285430] [2022-01-10 12:18:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:06,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:06,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:06,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457285430] [2022-01-10 12:18:06,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457285430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:06,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:06,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:18:06,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487422854] [2022-01-10 12:18:06,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:06,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:18:06,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:06,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:18:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:18:06,401 INFO L87 Difference]: Start difference. First operand 869 states and 1466 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:06,483 INFO L93 Difference]: Finished difference Result 1719 states and 2904 transitions. [2022-01-10 12:18:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:18:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:18:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:06,487 INFO L225 Difference]: With dead ends: 1719 [2022-01-10 12:18:06,487 INFO L226 Difference]: Without dead ends: 869 [2022-01-10 12:18:06,489 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 12:18:06,491 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 1441 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:06,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1458 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-01-10 12:18:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2022-01-10 12:18:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.6964078794901507) internal successors, (1464), 868 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1464 transitions. [2022-01-10 12:18:06,519 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1464 transitions. Word has length 61 [2022-01-10 12:18:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:06,520 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1464 transitions. [2022-01-10 12:18:06,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1464 transitions. [2022-01-10 12:18:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:18:06,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:06,527 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 12:18:06,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:18:06,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 529423307, now seen corresponding path program 1 times [2022-01-10 12:18:06,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:06,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946480312] [2022-01-10 12:18:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:06,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:06,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:06,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946480312] [2022-01-10 12:18:06,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946480312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:06,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:06,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:18:06,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493249637] [2022-01-10 12:18:06,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:06,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:06,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:06,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:06,710 INFO L87 Difference]: Start difference. First operand 869 states and 1464 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 12:18:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:06,968 INFO L93 Difference]: Finished difference Result 4213 states and 7116 transitions. [2022-01-10 12:18:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:18:06,969 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 12:18:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:06,979 INFO L225 Difference]: With dead ends: 4213 [2022-01-10 12:18:06,979 INFO L226 Difference]: Without dead ends: 3368 [2022-01-10 12:18:06,981 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 12:18:06,982 INFO L933 BasicCegarLoop]: 2851 mSDtfsCounter, 7103 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7103 SdHoareTripleChecker+Valid, 7115 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 12:18:06,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7103 Valid, 7115 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2022-01-10 12:18:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 869. [2022-01-10 12:18:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.6952491309385864) internal successors, (1463), 868 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1463 transitions. [2022-01-10 12:18:07,032 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1463 transitions. Word has length 63 [2022-01-10 12:18:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:07,033 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1463 transitions. [2022-01-10 12:18:07,033 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 12:18:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1463 transitions. [2022-01-10 12:18:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:18:07,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:07,034 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 12:18:07,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:18:07,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 473981349, now seen corresponding path program 1 times [2022-01-10 12:18:07,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:07,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257382266] [2022-01-10 12:18:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:07,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:07,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257382266] [2022-01-10 12:18:07,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257382266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:07,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:07,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:18:07,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462447244] [2022-01-10 12:18:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:07,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:18:07,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:18:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:18:07,108 INFO L87 Difference]: Start difference. First operand 869 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:18:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:07,183 INFO L93 Difference]: Finished difference Result 1723 states and 2904 transitions. [2022-01-10 12:18:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:18:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:18:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:07,186 INFO L225 Difference]: With dead ends: 1723 [2022-01-10 12:18:07,186 INFO L226 Difference]: Without dead ends: 883 [2022-01-10 12:18:07,187 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 12:18:07,188 INFO L933 BasicCegarLoop]: 1477 mSDtfsCounter, 1442 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1499 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 12:18:07,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 1499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-01-10 12:18:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 869. [2022-01-10 12:18:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.694090382387022) internal successors, (1462), 868 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1462 transitions. [2022-01-10 12:18:07,219 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1462 transitions. Word has length 64 [2022-01-10 12:18:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:07,219 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1462 transitions. [2022-01-10 12:18:07,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:18:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1462 transitions. [2022-01-10 12:18:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:18:07,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:07,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:07,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:18:07,220 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1778546132, now seen corresponding path program 1 times [2022-01-10 12:18:07,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:07,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403757873] [2022-01-10 12:18:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:07,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:07,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403757873] [2022-01-10 12:18:07,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403757873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:07,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:18:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980463982] [2022-01-10 12:18:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:07,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:07,288 INFO L87 Difference]: Start difference. First operand 869 states and 1462 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:07,445 INFO L93 Difference]: Finished difference Result 2541 states and 4286 transitions. [2022-01-10 12:18:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:18:07,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:18:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:07,451 INFO L225 Difference]: With dead ends: 2541 [2022-01-10 12:18:07,451 INFO L226 Difference]: Without dead ends: 1706 [2022-01-10 12:18:07,452 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 12:18:07,453 INFO L933 BasicCegarLoop]: 1471 mSDtfsCounter, 7026 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7026 SdHoareTripleChecker+Valid, 2956 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 12:18:07,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7026 Valid, 2956 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-01-10 12:18:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 869. [2022-01-10 12:18:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.6917728852838934) internal successors, (1460), 868 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1460 transitions. [2022-01-10 12:18:07,493 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1460 transitions. Word has length 65 [2022-01-10 12:18:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:07,494 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1460 transitions. [2022-01-10 12:18:07,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1460 transitions. [2022-01-10 12:18:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:18:07,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:07,495 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 12:18:07,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:18:07,495 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash 458464073, now seen corresponding path program 1 times [2022-01-10 12:18:07,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479370410] [2022-01-10 12:18:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:07,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:07,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479370410] [2022-01-10 12:18:07,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479370410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:07,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:07,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:07,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732805828] [2022-01-10 12:18:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:07,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:07,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:07,599 INFO L87 Difference]: Start difference. First operand 869 states and 1460 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:07,957 INFO L93 Difference]: Finished difference Result 3907 states and 6410 transitions. [2022-01-10 12:18:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:18:07,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:18:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:07,969 INFO L225 Difference]: With dead ends: 3907 [2022-01-10 12:18:07,969 INFO L226 Difference]: Without dead ends: 3418 [2022-01-10 12:18:07,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:18:07,972 INFO L933 BasicCegarLoop]: 1466 mSDtfsCounter, 6512 mSDsluCounter, 5259 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6512 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:07,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6512 Valid, 6725 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-01-10 12:18:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 1364. [2022-01-10 12:18:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1358 states have (on average 1.6634756995581739) internal successors, (2259), 1363 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2259 transitions. [2022-01-10 12:18:08,072 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2259 transitions. Word has length 67 [2022-01-10 12:18:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:08,072 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 2259 transitions. [2022-01-10 12:18:08,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2259 transitions. [2022-01-10 12:18:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:18:08,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:08,073 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 12:18:08,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:18:08,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -820369079, now seen corresponding path program 1 times [2022-01-10 12:18:08,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746914871] [2022-01-10 12:18:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:08,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:08,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:08,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746914871] [2022-01-10 12:18:08,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746914871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:08,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:08,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:08,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367177495] [2022-01-10 12:18:08,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:08,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:08,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:08,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:08,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:08,191 INFO L87 Difference]: Start difference. First operand 1364 states and 2259 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 12:18:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:08,817 INFO L93 Difference]: Finished difference Result 7116 states and 11619 transitions. [2022-01-10 12:18:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:18:08,817 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 12:18:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:08,836 INFO L225 Difference]: With dead ends: 7116 [2022-01-10 12:18:08,836 INFO L226 Difference]: Without dead ends: 6124 [2022-01-10 12:18:08,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:18:08,840 INFO L933 BasicCegarLoop]: 2249 mSDtfsCounter, 5528 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 7702 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:08,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 7702 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:18:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2022-01-10 12:18:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 2112. [2022-01-10 12:18:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2106 states have (on average 1.650997150997151) internal successors, (3477), 2111 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3477 transitions. [2022-01-10 12:18:08,964 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3477 transitions. Word has length 68 [2022-01-10 12:18:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:08,964 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3477 transitions. [2022-01-10 12:18:08,964 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 12:18:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3477 transitions. [2022-01-10 12:18:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:18:08,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:08,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:08,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:18:08,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1362093649, now seen corresponding path program 1 times [2022-01-10 12:18:08,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:08,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958482775] [2022-01-10 12:18:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:08,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:09,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958482775] [2022-01-10 12:18:09,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958482775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:09,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:09,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:09,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932045363] [2022-01-10 12:18:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:09,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:09,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:09,044 INFO L87 Difference]: Start difference. First operand 2112 states and 3477 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:09,675 INFO L93 Difference]: Finished difference Result 10641 states and 17179 transitions. [2022-01-10 12:18:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:18:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 12:18:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:09,699 INFO L225 Difference]: With dead ends: 10641 [2022-01-10 12:18:09,699 INFO L226 Difference]: Without dead ends: 8885 [2022-01-10 12:18:09,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:18:09,702 INFO L933 BasicCegarLoop]: 1508 mSDtfsCounter, 5618 mSDsluCounter, 5064 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:09,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 6572 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:18:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2022-01-10 12:18:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 4019. [2022-01-10 12:18:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 4013 states have (on average 1.642412160478445) internal successors, (6591), 4018 states have internal predecessors, (6591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 6591 transitions. [2022-01-10 12:18:09,964 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 6591 transitions. Word has length 71 [2022-01-10 12:18:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:09,964 INFO L470 AbstractCegarLoop]: Abstraction has 4019 states and 6591 transitions. [2022-01-10 12:18:09,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 6591 transitions. [2022-01-10 12:18:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:18:09,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:09,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:09,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:18:09,966 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1339543477, now seen corresponding path program 1 times [2022-01-10 12:18:09,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:09,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826016117] [2022-01-10 12:18:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:09,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:10,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:10,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826016117] [2022-01-10 12:18:10,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826016117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:10,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:10,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:10,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536340145] [2022-01-10 12:18:10,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:10,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:10,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:10,056 INFO L87 Difference]: Start difference. First operand 4019 states and 6591 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:11,247 INFO L93 Difference]: Finished difference Result 16368 states and 26458 transitions. [2022-01-10 12:18:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:18:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 12:18:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:11,279 INFO L225 Difference]: With dead ends: 16368 [2022-01-10 12:18:11,279 INFO L226 Difference]: Without dead ends: 13036 [2022-01-10 12:18:11,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:18:11,288 INFO L933 BasicCegarLoop]: 2176 mSDtfsCounter, 3639 mSDsluCounter, 4395 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 6571 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:11,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3639 Valid, 6571 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:18:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2022-01-10 12:18:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 7773. [2022-01-10 12:18:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7767 states have (on average 1.6419466975666281) internal successors, (12753), 7772 states have internal predecessors, (12753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 12753 transitions. [2022-01-10 12:18:11,774 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 12753 transitions. Word has length 72 [2022-01-10 12:18:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:11,774 INFO L470 AbstractCegarLoop]: Abstraction has 7773 states and 12753 transitions. [2022-01-10 12:18:11,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 12753 transitions. [2022-01-10 12:18:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:18:11,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:11,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:11,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:18:11,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:11,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -570626391, now seen corresponding path program 1 times [2022-01-10 12:18:11,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:11,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641872830] [2022-01-10 12:18:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:11,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:11,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:11,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641872830] [2022-01-10 12:18:11,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641872830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:11,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:11,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:18:11,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379568071] [2022-01-10 12:18:11,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:11,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:18:11,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:18:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:18:11,870 INFO L87 Difference]: Start difference. First operand 7773 states and 12753 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:12,701 INFO L93 Difference]: Finished difference Result 15531 states and 25186 transitions. [2022-01-10 12:18:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:18:12,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 12:18:12,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:12,716 INFO L225 Difference]: With dead ends: 15531 [2022-01-10 12:18:12,716 INFO L226 Difference]: Without dead ends: 9055 [2022-01-10 12:18:12,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:18:12,724 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 4323 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 5029 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:12,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4323 Valid, 5029 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:12,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9055 states. [2022-01-10 12:18:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9055 to 7289. [2022-01-10 12:18:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7283 states have (on average 1.6321570781271455) internal successors, (11887), 7288 states have internal predecessors, (11887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 11887 transitions. [2022-01-10 12:18:13,314 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 11887 transitions. Word has length 72 [2022-01-10 12:18:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 7289 states and 11887 transitions. [2022-01-10 12:18:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 11887 transitions. [2022-01-10 12:18:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:18:13,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:13,318 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, 1, 1, 1] [2022-01-10 12:18:13,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:18:13,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash -704742433, now seen corresponding path program 1 times [2022-01-10 12:18:13,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:13,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063310005] [2022-01-10 12:18:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:13,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:13,366 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 12:18:13,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:13,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063310005] [2022-01-10 12:18:13,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063310005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:13,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:13,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:18:13,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22225331] [2022-01-10 12:18:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:13,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:18:13,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:18:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:18:13,368 INFO L87 Difference]: Start difference. First operand 7289 states and 11887 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:14,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:14,257 INFO L93 Difference]: Finished difference Result 21585 states and 35179 transitions. [2022-01-10 12:18:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:18:14,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 12:18:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:14,280 INFO L225 Difference]: With dead ends: 21585 [2022-01-10 12:18:14,281 INFO L226 Difference]: Without dead ends: 14333 [2022-01-10 12:18:14,290 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 12:18:14,291 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 1374 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2756 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 12:18:14,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2756 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14333 states. [2022-01-10 12:18:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14333 to 8145. [2022-01-10 12:18:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 8139 states have (on average 1.6502027276078142) internal successors, (13431), 8144 states have internal predecessors, (13431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 13431 transitions. [2022-01-10 12:18:14,854 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 13431 transitions. Word has length 90 [2022-01-10 12:18:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:14,854 INFO L470 AbstractCegarLoop]: Abstraction has 8145 states and 13431 transitions. [2022-01-10 12:18:14,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 13431 transitions. [2022-01-10 12:18:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 12:18:14,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:14,860 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, 1, 1, 1, 1] [2022-01-10 12:18:14,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:18:14,860 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 822469408, now seen corresponding path program 1 times [2022-01-10 12:18:14,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:14,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870258522] [2022-01-10 12:18:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:14,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:14,905 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 12:18:14,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:14,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870258522] [2022-01-10 12:18:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870258522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:14,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:14,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:18:14,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972190418] [2022-01-10 12:18:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:14,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:18:14,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:18:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:18:14,907 INFO L87 Difference]: Start difference. First operand 8145 states and 13431 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:16,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:16,114 INFO L93 Difference]: Finished difference Result 24313 states and 40115 transitions. [2022-01-10 12:18:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:18:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-10 12:18:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:16,140 INFO L225 Difference]: With dead ends: 24313 [2022-01-10 12:18:16,140 INFO L226 Difference]: Without dead ends: 16205 [2022-01-10 12:18:16,150 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 12:18:16,151 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 1372 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2842 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 12:18:16,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 2842 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16205 states. [2022-01-10 12:18:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16205 to 10017. [2022-01-10 12:18:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10017 states, 10011 states have (on average 1.6800519428628509) internal successors, (16819), 10016 states have internal predecessors, (16819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 16819 transitions. [2022-01-10 12:18:16,778 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 16819 transitions. Word has length 91 [2022-01-10 12:18:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:16,778 INFO L470 AbstractCegarLoop]: Abstraction has 10017 states and 16819 transitions. [2022-01-10 12:18:16,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 16819 transitions. [2022-01-10 12:18:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:18:16,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:16,787 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, 1, 1, 1, 1, 1] [2022-01-10 12:18:16,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:18:16,788 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2130973862, now seen corresponding path program 1 times [2022-01-10 12:18:16,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:16,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937693174] [2022-01-10 12:18:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:16,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:16,835 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 12:18:16,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:16,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937693174] [2022-01-10 12:18:16,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937693174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:16,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:16,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:18:16,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523560151] [2022-01-10 12:18:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:16,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:18:16,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:16,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:18:16,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:18:16,837 INFO L87 Difference]: Start difference. First operand 10017 states and 16819 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:17,902 INFO L93 Difference]: Finished difference Result 29881 states and 50199 transitions. [2022-01-10 12:18:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:18:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 12:18:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:17,929 INFO L225 Difference]: With dead ends: 29881 [2022-01-10 12:18:17,929 INFO L226 Difference]: Without dead ends: 19901 [2022-01-10 12:18:17,941 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 12:18:17,942 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 1370 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 2842 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 12:18:17,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 2842 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:18:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19901 states. [2022-01-10 12:18:18,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19901 to 13713. [2022-01-10 12:18:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13713 states, 13707 states have (on average 1.714963157510761) internal successors, (23507), 13712 states have internal predecessors, (23507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13713 states to 13713 states and 23507 transitions. [2022-01-10 12:18:18,720 INFO L78 Accepts]: Start accepts. Automaton has 13713 states and 23507 transitions. Word has length 92 [2022-01-10 12:18:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:18,720 INFO L470 AbstractCegarLoop]: Abstraction has 13713 states and 23507 transitions. [2022-01-10 12:18:18,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13713 states and 23507 transitions. [2022-01-10 12:18:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:18:18,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:18,738 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, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:18,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:18:18,738 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2789254, now seen corresponding path program 1 times [2022-01-10 12:18:18,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886908118] [2022-01-10 12:18:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:18,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:18,888 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 12:18:18,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:18,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886908118] [2022-01-10 12:18:18,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886908118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:18,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:18,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:18:18,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192738568] [2022-01-10 12:18:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:18,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:18:18,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:18:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:18:18,889 INFO L87 Difference]: Start difference. First operand 13713 states and 23507 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:37,362 INFO L93 Difference]: Finished difference Result 159452 states and 256631 transitions. [2022-01-10 12:18:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-10 12:18:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:18:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:37,756 INFO L225 Difference]: With dead ends: 159452 [2022-01-10 12:18:37,756 INFO L226 Difference]: Without dead ends: 157565 [2022-01-10 12:18:37,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1663, Invalid=7843, Unknown=0, NotChecked=0, Total=9506 [2022-01-10 12:18:37,801 INFO L933 BasicCegarLoop]: 4055 mSDtfsCounter, 38780 mSDsluCounter, 34093 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38780 SdHoareTripleChecker+Valid, 38148 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:37,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38780 Valid, 38148 Invalid, 3291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [518 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 12:18:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157565 states. [2022-01-10 12:18:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157565 to 23627. [2022-01-10 12:18:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23627 states, 23621 states have (on average 1.700901739977139) internal successors, (40177), 23626 states have internal predecessors, (40177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23627 states to 23627 states and 40177 transitions. [2022-01-10 12:18:41,263 INFO L78 Accepts]: Start accepts. Automaton has 23627 states and 40177 transitions. Word has length 93 [2022-01-10 12:18:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:41,263 INFO L470 AbstractCegarLoop]: Abstraction has 23627 states and 40177 transitions. [2022-01-10 12:18:41,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 23627 states and 40177 transitions. [2022-01-10 12:18:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 12:18:41,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:41,292 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, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:41,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:18:41,292 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash -332222216, now seen corresponding path program 1 times [2022-01-10 12:18:41,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:41,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376891199] [2022-01-10 12:18:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:41,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:41,379 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 12:18:41,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:41,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376891199] [2022-01-10 12:18:41,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376891199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:41,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:41,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:41,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445928044] [2022-01-10 12:18:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:41,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:18:41,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:18:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:18:41,381 INFO L87 Difference]: Start difference. First operand 23627 states and 40177 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:45,293 INFO L93 Difference]: Finished difference Result 68191 states and 115345 transitions. [2022-01-10 12:18:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:18:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 12:18:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:45,371 INFO L225 Difference]: With dead ends: 68191 [2022-01-10 12:18:45,372 INFO L226 Difference]: Without dead ends: 44601 [2022-01-10 12:18:45,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:18:45,404 INFO L933 BasicCegarLoop]: 2669 mSDtfsCounter, 2623 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:45,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2623 Valid, 4008 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44601 states. [2022-01-10 12:18:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44601 to 23531. [2022-01-10 12:18:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23531 states, 23525 states have (on average 1.6976408076514347) internal successors, (39937), 23530 states have internal predecessors, (39937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23531 states to 23531 states and 39937 transitions. [2022-01-10 12:18:47,743 INFO L78 Accepts]: Start accepts. Automaton has 23531 states and 39937 transitions. Word has length 93 [2022-01-10 12:18:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:47,744 INFO L470 AbstractCegarLoop]: Abstraction has 23531 states and 39937 transitions. [2022-01-10 12:18:47,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 23531 states and 39937 transitions. [2022-01-10 12:18:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:18:47,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:47,769 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:18:47,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:18:47,769 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -701240510, now seen corresponding path program 1 times [2022-01-10 12:18:47,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:47,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095886900] [2022-01-10 12:18:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:47,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:47,865 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 12:18:47,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:47,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095886900] [2022-01-10 12:18:47,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095886900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:47,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:47,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:47,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908909285] [2022-01-10 12:18:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:47,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:47,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:47,866 INFO L87 Difference]: Start difference. First operand 23531 states and 39937 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:56,457 INFO L93 Difference]: Finished difference Result 84356 states and 139225 transitions. [2022-01-10 12:18:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:18:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 94 [2022-01-10 12:18:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:56,595 INFO L225 Difference]: With dead ends: 84356 [2022-01-10 12:18:56,595 INFO L226 Difference]: Without dead ends: 75924 [2022-01-10 12:18:56,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:18:56,621 INFO L933 BasicCegarLoop]: 2154 mSDtfsCounter, 4347 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 7084 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:56,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4347 Valid, 7084 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75924 states. [2022-01-10 12:19:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75924 to 42854. [2022-01-10 12:19:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42854 states, 42848 states have (on average 1.7073842419716205) internal successors, (73158), 42853 states have internal predecessors, (73158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42854 states to 42854 states and 73158 transitions. [2022-01-10 12:19:00,880 INFO L78 Accepts]: Start accepts. Automaton has 42854 states and 73158 transitions. Word has length 94 [2022-01-10 12:19:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:00,880 INFO L470 AbstractCegarLoop]: Abstraction has 42854 states and 73158 transitions. [2022-01-10 12:19:00,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 42854 states and 73158 transitions. [2022-01-10 12:19:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 12:19:00,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:00,907 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:00,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:19:00,907 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1932403691, now seen corresponding path program 1 times [2022-01-10 12:19:00,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:00,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903502808] [2022-01-10 12:19:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:00,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:01,020 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 12:19:01,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:01,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903502808] [2022-01-10 12:19:01,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903502808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:01,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:01,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:19:01,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191100879] [2022-01-10 12:19:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:01,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:19:01,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:19:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:01,022 INFO L87 Difference]: Start difference. First operand 42854 states and 73158 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)