/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:17:15,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:17:15,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:17:15,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:17:15,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:17:15,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:17:15,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:17:15,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:17:15,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:17:15,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:17:15,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:17:15,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:17:15,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:17:15,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:17:15,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:17:15,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:17:15,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:17:15,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:17:15,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:17:15,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:17:15,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:17:15,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:17:15,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:17:15,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:17:15,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:17:15,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:17:15,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:17:15,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:17:15,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:17:15,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:17:15,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:17:15,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:17:15,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:17:15,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:17:15,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:17:15,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:17:15,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:17:15,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:17:15,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:17:15,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:17:15,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:17:15,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:17:15,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:17:15,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:17:15,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:17:15,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:17:15,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:17:15,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:17:15,517 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:17:15,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:17:15,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:17:15,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:17:15,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:17:15,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:15,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:17:15,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:17:15,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:17:15,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:17:15,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:17:15,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:17:15,520 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:17:15,520 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:17:15,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:17:15,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:17:15,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:17:15,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:17:15,729 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:17:15,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c [2022-01-10 12:17:15,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635e2c9ed/f1324148c93e46efbc84058e121731e5/FLAG6e19a1095 [2022-01-10 12:17:16,211 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:17:16,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c [2022-01-10 12:17:16,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635e2c9ed/f1324148c93e46efbc84058e121731e5/FLAG6e19a1095 [2022-01-10 12:17:16,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635e2c9ed/f1324148c93e46efbc84058e121731e5 [2022-01-10 12:17:16,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:17:16,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:17:16,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:16,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:17:16,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:17:16,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:16" (1/1) ... [2022-01-10 12:17:16,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bae4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:16, skipping insertion in model container [2022-01-10 12:17:16,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:16" (1/1) ... [2022-01-10 12:17:16,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:17:16,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:16,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-01-10 12:17:17,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:17,163 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:17:17,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:17,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-01-10 12:17:17,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:17,262 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:17:17,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-01-10 12:17:17,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:17,343 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:17:17,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17 WrapperNode [2022-01-10 12:17:17,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:17,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:17,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:17:17,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:17:17,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,474 INFO L137 Inliner]: procedures = 136, calls = 237, calls flagged for inlining = 144, calls inlined = 424, statements flattened = 6531 [2022-01-10 12:17:17,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:17,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:17:17,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:17:17,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:17:17,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:17:17,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:17:17,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:17:17,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:17:17,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (1/1) ... [2022-01-10 12:17:17,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:17:17,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:17:17,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:17:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:17:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:17:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:17:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:17:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:17:17,964 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:17:17,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:17:20,028 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:17:20,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:17:20,053 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:17:20,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:20 BoogieIcfgContainer [2022-01-10 12:17:20,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:17:20,056 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:17:20,056 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:17:20,057 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:17:20,059 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:20" (1/1) ... [2022-01-10 12:17:20,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:20 BasicIcfg [2022-01-10 12:17:20,520 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:17:20,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:17:20,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:17:20,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:17:20,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:17:16" (1/4) ... [2022-01-10 12:17:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf2e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:20, skipping insertion in model container [2022-01-10 12:17:20,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:17" (2/4) ... [2022-01-10 12:17:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf2e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:20, skipping insertion in model container [2022-01-10 12:17:20,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:20" (3/4) ... [2022-01-10 12:17:20,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bf2e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:17:20, skipping insertion in model container [2022-01-10 12:17:20,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:20" (4/4) ... [2022-01-10 12:17:20,525 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product34.cil.cTransformedIcfg [2022-01-10 12:17:20,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:17:20,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:17:20,580 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:17:20,586 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:17:20,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:17:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 1368 states, 1361 states have (on average 1.6722997795738428) internal successors, (2276), 1367 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:17:20,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:20,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:20,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1571213373, now seen corresponding path program 1 times [2022-01-10 12:17:20,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014524846] [2022-01-10 12:17:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:20,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:20,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014524846] [2022-01-10 12:17:20,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014524846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:20,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:20,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:17:20,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055580526] [2022-01-10 12:17:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:20,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:17:20,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:17:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:17:21,039 INFO L87 Difference]: Start difference. First operand has 1368 states, 1361 states have (on average 1.6722997795738428) internal successors, (2276), 1367 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:21,164 INFO L93 Difference]: Finished difference Result 2427 states and 4005 transitions. [2022-01-10 12:17:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:17:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 12:17:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:21,181 INFO L225 Difference]: With dead ends: 2427 [2022-01-10 12:17:21,182 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 12:17:21,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:17:21,190 INFO L933 BasicCegarLoop]: 2262 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, 2262 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:21,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 12:17:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 12:17:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1116 states have (on average 1.6836917562724014) internal successors, (1879), 1121 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1879 transitions. [2022-01-10 12:17:21,256 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1879 transitions. Word has length 57 [2022-01-10 12:17:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:21,257 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1879 transitions. [2022-01-10 12:17:21,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1879 transitions. [2022-01-10 12:17:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:17:21,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:21,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:21,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:17:21,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 560625809, now seen corresponding path program 1 times [2022-01-10 12:17:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:21,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57492431] [2022-01-10 12:17:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:21,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:21,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:21,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57492431] [2022-01-10 12:17:21,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57492431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:21,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:21,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:21,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711943509] [2022-01-10 12:17:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:21,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:21,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:21,395 INFO L87 Difference]: Start difference. First operand 1122 states and 1879 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:21,484 INFO L93 Difference]: Finished difference Result 2225 states and 3730 transitions. [2022-01-10 12:17:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:21,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 12:17:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:21,493 INFO L225 Difference]: With dead ends: 2225 [2022-01-10 12:17:21,494 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 12:17:21,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:21,497 INFO L933 BasicCegarLoop]: 1858 mSDtfsCounter, 1854 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 1871 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 12:17:21,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1854 Valid, 1871 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 12:17:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 12:17:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1116 states have (on average 1.6818996415770608) internal successors, (1877), 1121 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1877 transitions. [2022-01-10 12:17:21,547 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1877 transitions. Word has length 58 [2022-01-10 12:17:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:21,548 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1877 transitions. [2022-01-10 12:17:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1877 transitions. [2022-01-10 12:17:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:17:21,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:21,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:21,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:17:21,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 822675857, now seen corresponding path program 1 times [2022-01-10 12:17:21,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634438792] [2022-01-10 12:17:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:21,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:21,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:21,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634438792] [2022-01-10 12:17:21,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634438792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:21,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:21,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:21,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237844863] [2022-01-10 12:17:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:21,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:21,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:21,705 INFO L87 Difference]: Start difference. First operand 1122 states and 1877 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:22,026 INFO L93 Difference]: Finished difference Result 5478 states and 9181 transitions. [2022-01-10 12:17:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:22,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:17:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:22,040 INFO L225 Difference]: With dead ends: 5478 [2022-01-10 12:17:22,040 INFO L226 Difference]: Without dead ends: 4380 [2022-01-10 12:17:22,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:22,048 INFO L933 BasicCegarLoop]: 3677 mSDtfsCounter, 9168 mSDsluCounter, 5503 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9168 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:22,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9168 Valid, 9180 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2022-01-10 12:17:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 1122. [2022-01-10 12:17:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1116 states have (on average 1.6810035842293907) internal successors, (1876), 1121 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1876 transitions. [2022-01-10 12:17:22,108 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1876 transitions. Word has length 60 [2022-01-10 12:17:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:22,108 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1876 transitions. [2022-01-10 12:17:22,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1876 transitions. [2022-01-10 12:17:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:17:22,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:22,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:17:22,110 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash -761316579, now seen corresponding path program 1 times [2022-01-10 12:17:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924970311] [2022-01-10 12:17:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:22,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:22,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924970311] [2022-01-10 12:17:22,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924970311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:22,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:22,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:22,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734844252] [2022-01-10 12:17:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:22,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:22,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:22,208 INFO L87 Difference]: Start difference. First operand 1122 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:22,296 INFO L93 Difference]: Finished difference Result 2229 states and 3730 transitions. [2022-01-10 12:17:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:22,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:17:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:22,300 INFO L225 Difference]: With dead ends: 2229 [2022-01-10 12:17:22,300 INFO L226 Difference]: Without dead ends: 1136 [2022-01-10 12:17:22,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:22,302 INFO L933 BasicCegarLoop]: 1890 mSDtfsCounter, 1855 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:22,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 1912 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-01-10 12:17:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1122. [2022-01-10 12:17:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1116 states have (on average 1.6801075268817205) internal successors, (1875), 1121 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1875 transitions. [2022-01-10 12:17:22,342 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1875 transitions. Word has length 61 [2022-01-10 12:17:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:22,342 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1875 transitions. [2022-01-10 12:17:22,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1875 transitions. [2022-01-10 12:17:22,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:17:22,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:22,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:22,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:17:22,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2127922064, now seen corresponding path program 1 times [2022-01-10 12:17:22,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:22,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409517132] [2022-01-10 12:17:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:22,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:22,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:22,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409517132] [2022-01-10 12:17:22,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409517132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:22,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:22,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:22,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413849510] [2022-01-10 12:17:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:22,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:22,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:22,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:22,456 INFO L87 Difference]: Start difference. First operand 1122 states and 1875 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:22,639 INFO L93 Difference]: Finished difference Result 3300 states and 5525 transitions. [2022-01-10 12:17:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:17:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:22,646 INFO L225 Difference]: With dead ends: 3300 [2022-01-10 12:17:22,646 INFO L226 Difference]: Without dead ends: 2212 [2022-01-10 12:17:22,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:22,649 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 9091 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9091 SdHoareTripleChecker+Valid, 3782 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 12:17:22,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9091 Valid, 3782 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2022-01-10 12:17:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1122. [2022-01-10 12:17:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1116 states have (on average 1.67831541218638) internal successors, (1873), 1121 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1873 transitions. [2022-01-10 12:17:22,709 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1873 transitions. Word has length 62 [2022-01-10 12:17:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:22,709 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1873 transitions. [2022-01-10 12:17:22,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1873 transitions. [2022-01-10 12:17:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:17:22,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:22,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:22,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:17:22,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:22,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1371685971, now seen corresponding path program 1 times [2022-01-10 12:17:22,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:22,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697169603] [2022-01-10 12:17:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:22,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:22,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697169603] [2022-01-10 12:17:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697169603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:22,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:22,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842073532] [2022-01-10 12:17:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:22,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:22,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:22,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:22,807 INFO L87 Difference]: Start difference. First operand 1122 states and 1873 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:23,664 INFO L93 Difference]: Finished difference Result 9092 states and 14930 transitions. [2022-01-10 12:17:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:17:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:17:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:23,693 INFO L225 Difference]: With dead ends: 9092 [2022-01-10 12:17:23,693 INFO L226 Difference]: Without dead ends: 8292 [2022-01-10 12:17:23,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:17:23,701 INFO L933 BasicCegarLoop]: 3562 mSDtfsCounter, 15667 mSDsluCounter, 12787 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15667 SdHoareTripleChecker+Valid, 16349 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:23,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15667 Valid, 16349 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:17:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8292 states. [2022-01-10 12:17:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8292 to 1943. [2022-01-10 12:17:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1937 states have (on average 1.680433660299432) internal successors, (3255), 1942 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3255 transitions. [2022-01-10 12:17:23,901 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3255 transitions. Word has length 64 [2022-01-10 12:17:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:23,902 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 3255 transitions. [2022-01-10 12:17:23,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3255 transitions. [2022-01-10 12:17:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:23,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:23,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:23,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:17:23,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -767858547, now seen corresponding path program 1 times [2022-01-10 12:17:23,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:23,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202358990] [2022-01-10 12:17:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:23,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:24,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:24,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202358990] [2022-01-10 12:17:24,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202358990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:24,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:24,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:24,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899230763] [2022-01-10 12:17:24,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:24,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:24,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:24,012 INFO L87 Difference]: Start difference. First operand 1943 states and 3255 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:24,285 INFO L93 Difference]: Finished difference Result 4347 states and 7153 transitions. [2022-01-10 12:17:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:17:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:24,294 INFO L225 Difference]: With dead ends: 4347 [2022-01-10 12:17:24,294 INFO L226 Difference]: Without dead ends: 3020 [2022-01-10 12:17:24,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:24,296 INFO L933 BasicCegarLoop]: 1855 mSDtfsCounter, 6597 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6597 SdHoareTripleChecker+Valid, 3986 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:24,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6597 Valid, 3986 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-01-10 12:17:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1943. [2022-01-10 12:17:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1937 states have (on average 1.6783686112545173) internal successors, (3251), 1942 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3251 transitions. [2022-01-10 12:17:24,399 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3251 transitions. Word has length 65 [2022-01-10 12:17:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:24,399 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 3251 transitions. [2022-01-10 12:17:24,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3251 transitions. [2022-01-10 12:17:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:24,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:24,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:24,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:17:24,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash 19980067, now seen corresponding path program 1 times [2022-01-10 12:17:24,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397018178] [2022-01-10 12:17:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:24,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:24,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397018178] [2022-01-10 12:17:24,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397018178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:24,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:24,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:24,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449126558] [2022-01-10 12:17:24,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:24,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:24,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:24,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:24,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:24,460 INFO L87 Difference]: Start difference. First operand 1943 states and 3251 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:24,757 INFO L93 Difference]: Finished difference Result 5706 states and 9582 transitions. [2022-01-10 12:17:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:17:24,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:17:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:24,779 INFO L225 Difference]: With dead ends: 5706 [2022-01-10 12:17:24,779 INFO L226 Difference]: Without dead ends: 3800 [2022-01-10 12:17:24,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:24,782 INFO L933 BasicCegarLoop]: 3645 mSDtfsCounter, 5550 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5550 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:24,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5550 Valid, 5469 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-01-10 12:17:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 1943. [2022-01-10 12:17:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1937 states have (on average 1.67733608673206) internal successors, (3249), 1942 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3249 transitions. [2022-01-10 12:17:24,899 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3249 transitions. Word has length 65 [2022-01-10 12:17:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:24,899 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 3249 transitions. [2022-01-10 12:17:24,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3249 transitions. [2022-01-10 12:17:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:17:24,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:24,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:24,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:17:24,905 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 672917668, now seen corresponding path program 1 times [2022-01-10 12:17:24,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895685049] [2022-01-10 12:17:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:24,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:25,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:25,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895685049] [2022-01-10 12:17:25,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895685049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:25,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:25,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:25,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004994870] [2022-01-10 12:17:25,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:25,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:25,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:25,047 INFO L87 Difference]: Start difference. First operand 1943 states and 3249 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:26,714 INFO L93 Difference]: Finished difference Result 10087 states and 16385 transitions. [2022-01-10 12:17:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:26,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:17:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:26,732 INFO L225 Difference]: With dead ends: 10087 [2022-01-10 12:17:26,732 INFO L226 Difference]: Without dead ends: 8876 [2022-01-10 12:17:26,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:26,738 INFO L933 BasicCegarLoop]: 3260 mSDtfsCounter, 13633 mSDsluCounter, 17408 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13633 SdHoareTripleChecker+Valid, 20668 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:26,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13633 Valid, 20668 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:17:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8876 states. [2022-01-10 12:17:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8876 to 3767. [2022-01-10 12:17:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3761 states have (on average 1.6819994682265356) internal successors, (6326), 3766 states have internal predecessors, (6326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 6326 transitions. [2022-01-10 12:17:27,060 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 6326 transitions. Word has length 66 [2022-01-10 12:17:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:27,060 INFO L470 AbstractCegarLoop]: Abstraction has 3767 states and 6326 transitions. [2022-01-10 12:17:27,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 6326 transitions. [2022-01-10 12:17:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:17:27,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:27,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:27,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:17:27,064 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1708858838, now seen corresponding path program 1 times [2022-01-10 12:17:27,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:27,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663976143] [2022-01-10 12:17:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:27,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:27,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663976143] [2022-01-10 12:17:27,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663976143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:27,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:27,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:27,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203232477] [2022-01-10 12:17:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:27,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:27,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:27,222 INFO L87 Difference]: Start difference. First operand 3767 states and 6326 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:29,362 INFO L93 Difference]: Finished difference Result 17779 states and 28971 transitions. [2022-01-10 12:17:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:17:29,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:17:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:29,390 INFO L225 Difference]: With dead ends: 17779 [2022-01-10 12:17:29,390 INFO L226 Difference]: Without dead ends: 15426 [2022-01-10 12:17:29,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:29,396 INFO L933 BasicCegarLoop]: 3124 mSDtfsCounter, 13619 mSDsluCounter, 16703 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13619 SdHoareTripleChecker+Valid, 19827 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:29,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13619 Valid, 19827 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 12:17:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-01-10 12:17:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 7431. [2022-01-10 12:17:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 7425 states have (on average 1.6841750841750842) internal successors, (12505), 7430 states have internal predecessors, (12505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 12505 transitions. [2022-01-10 12:17:30,014 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 12505 transitions. Word has length 67 [2022-01-10 12:17:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:30,014 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 12505 transitions. [2022-01-10 12:17:30,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 12505 transitions. [2022-01-10 12:17:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:17:30,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:30,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:30,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:17:30,018 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1078556649, now seen corresponding path program 1 times [2022-01-10 12:17:30,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931415681] [2022-01-10 12:17:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:30,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:30,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931415681] [2022-01-10 12:17:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931415681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:30,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:30,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:30,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410154149] [2022-01-10 12:17:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:30,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:30,105 INFO L87 Difference]: Start difference. First operand 7431 states and 12505 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:33,330 INFO L93 Difference]: Finished difference Result 39287 states and 63905 transitions. [2022-01-10 12:17:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:33,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:17:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:33,398 INFO L225 Difference]: With dead ends: 39287 [2022-01-10 12:17:33,398 INFO L226 Difference]: Without dead ends: 34954 [2022-01-10 12:17:33,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:33,409 INFO L933 BasicCegarLoop]: 1849 mSDtfsCounter, 10989 mSDsluCounter, 6536 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10989 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:33,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10989 Valid, 8385 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:17:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34954 states. [2022-01-10 12:17:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34954 to 12636. [2022-01-10 12:17:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12636 states, 12630 states have (on average 1.6601741884402217) internal successors, (20968), 12635 states have internal predecessors, (20968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12636 states to 12636 states and 20968 transitions. [2022-01-10 12:17:34,617 INFO L78 Accepts]: Start accepts. Automaton has 12636 states and 20968 transitions. Word has length 67 [2022-01-10 12:17:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:34,618 INFO L470 AbstractCegarLoop]: Abstraction has 12636 states and 20968 transitions. [2022-01-10 12:17:34,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 12636 states and 20968 transitions. [2022-01-10 12:17:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:34,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:34,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:34,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:17:34,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1061798323, now seen corresponding path program 1 times [2022-01-10 12:17:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:34,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785402081] [2022-01-10 12:17:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:34,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:34,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:34,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785402081] [2022-01-10 12:17:34,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785402081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:34,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:34,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:17:34,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886971673] [2022-01-10 12:17:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:34,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:17:34,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:17:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:34,746 INFO L87 Difference]: Start difference. First operand 12636 states and 20968 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:37,034 INFO L93 Difference]: Finished difference Result 27616 states and 45045 transitions. [2022-01-10 12:17:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:17:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:17:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:37,096 INFO L225 Difference]: With dead ends: 27616 [2022-01-10 12:17:37,096 INFO L226 Difference]: Without dead ends: 18882 [2022-01-10 12:17:37,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:17:37,128 INFO L933 BasicCegarLoop]: 1862 mSDtfsCounter, 10864 mSDsluCounter, 6766 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10864 SdHoareTripleChecker+Valid, 8628 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:37,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10864 Valid, 8628 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18882 states. [2022-01-10 12:17:38,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18882 to 12468. [2022-01-10 12:17:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12468 states, 12462 states have (on average 1.655593002728294) internal successors, (20632), 12467 states have internal predecessors, (20632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12468 states to 12468 states and 20632 transitions. [2022-01-10 12:17:38,574 INFO L78 Accepts]: Start accepts. Automaton has 12468 states and 20632 transitions. Word has length 68 [2022-01-10 12:17:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:38,575 INFO L470 AbstractCegarLoop]: Abstraction has 12468 states and 20632 transitions. [2022-01-10 12:17:38,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 12468 states and 20632 transitions. [2022-01-10 12:17:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:17:38,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:38,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:38,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:17:38,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 886867600, now seen corresponding path program 1 times [2022-01-10 12:17:38,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:38,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520259385] [2022-01-10 12:17:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:38,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:38,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:38,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520259385] [2022-01-10 12:17:38,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520259385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:38,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:38,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:38,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453558701] [2022-01-10 12:17:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:38,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:38,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:38,704 INFO L87 Difference]: Start difference. First operand 12468 states and 20632 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:50,904 INFO L93 Difference]: Finished difference Result 99883 states and 162136 transitions. [2022-01-10 12:17:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:17:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:17:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:51,053 INFO L225 Difference]: With dead ends: 99883 [2022-01-10 12:17:51,054 INFO L226 Difference]: Without dead ends: 98077 [2022-01-10 12:17:51,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:17:51,076 INFO L933 BasicCegarLoop]: 5905 mSDtfsCounter, 15154 mSDsluCounter, 24515 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15154 SdHoareTripleChecker+Valid, 30420 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:51,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15154 Valid, 30420 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:17:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98077 states. [2022-01-10 12:17:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98077 to 18528. [2022-01-10 12:17:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18528 states, 18522 states have (on average 1.6467984019004427) internal successors, (30502), 18527 states have internal predecessors, (30502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18528 states to 18528 states and 30502 transitions. [2022-01-10 12:17:53,711 INFO L78 Accepts]: Start accepts. Automaton has 18528 states and 30502 transitions. Word has length 69 [2022-01-10 12:17:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:53,711 INFO L470 AbstractCegarLoop]: Abstraction has 18528 states and 30502 transitions. [2022-01-10 12:17:53,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 18528 states and 30502 transitions. [2022-01-10 12:17:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:17:53,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:53,718 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] [2022-01-10 12:17:53,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:17:53,718 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:17:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1724041480, now seen corresponding path program 1 times [2022-01-10 12:17:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:53,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158270485] [2022-01-10 12:17:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:53,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:53,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158270485] [2022-01-10 12:17:53,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158270485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:53,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:53,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:17:53,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290948478] [2022-01-10 12:17:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:53,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:17:53,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:17:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:53,802 INFO L87 Difference]: Start difference. First operand 18528 states and 30502 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 12:18:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:03,159 INFO L93 Difference]: Finished difference Result 73341 states and 119561 transitions. [2022-01-10 12:18:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:18:03,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 12:18:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:03,270 INFO L225 Difference]: With dead ends: 73341 [2022-01-10 12:18:03,270 INFO L226 Difference]: Without dead ends: 65258 [2022-01-10 12:18:03,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:18:03,294 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 17945 mSDsluCounter, 10249 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17945 SdHoareTripleChecker+Valid, 12193 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:03,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17945 Valid, 12193 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:18:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65258 states. [2022-01-10 12:18:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65258 to 25271. [2022-01-10 12:18:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25271 states, 25265 states have (on average 1.6472986344745695) internal successors, (41619), 25270 states have internal predecessors, (41619), 0 states have call successors, (0), 0 states 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 12:18:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25271 states to 25271 states and 41619 transitions. [2022-01-10 12:18:06,881 INFO L78 Accepts]: Start accepts. Automaton has 25271 states and 41619 transitions. Word has length 70 [2022-01-10 12:18:06,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:06,881 INFO L470 AbstractCegarLoop]: Abstraction has 25271 states and 41619 transitions. [2022-01-10 12:18:06,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 12:18:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25271 states and 41619 transitions. [2022-01-10 12:18:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:18:06,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:06,887 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 12:18:06,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:18:06,888 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1906985476, now seen corresponding path program 1 times [2022-01-10 12:18:06,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587992828] [2022-01-10 12:18:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:06,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:07,007 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 12:18:07,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587992828] [2022-01-10 12:18:07,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587992828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:07,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:07,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:18:07,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153617947] [2022-01-10 12:18:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:07,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:18:07,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:18:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:18:07,008 INFO L87 Difference]: Start difference. First operand 25271 states and 41619 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:18:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:17,605 INFO L93 Difference]: Finished difference Result 75019 states and 122221 transitions. [2022-01-10 12:18:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:18:17,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:18:17,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:17,705 INFO L225 Difference]: With dead ends: 75019 [2022-01-10 12:18:17,705 INFO L226 Difference]: Without dead ends: 60700 [2022-01-10 12:18:17,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:18:17,732 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 17832 mSDsluCounter, 10249 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17832 SdHoareTripleChecker+Valid, 12217 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:17,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17832 Valid, 12217 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:18:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60700 states. [2022-01-10 12:18:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60700 to 23413. [2022-01-10 12:18:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23413 states, 23407 states have (on average 1.6479258341521767) internal successors, (38573), 23412 states have internal predecessors, (38573), 0 states have call successors, (0), 0 states 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 12:18:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23413 states to 23413 states and 38573 transitions. [2022-01-10 12:18:21,486 INFO L78 Accepts]: Start accepts. Automaton has 23413 states and 38573 transitions. Word has length 71 [2022-01-10 12:18:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:21,486 INFO L470 AbstractCegarLoop]: Abstraction has 23413 states and 38573 transitions. [2022-01-10 12:18:21,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 12:18:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 23413 states and 38573 transitions. [2022-01-10 12:18:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:18:21,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:21,506 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 12:18:21,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:18:21,506 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:18:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:21,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1710006658, now seen corresponding path program 1 times [2022-01-10 12:18:21,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:21,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733548334] [2022-01-10 12:18:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:21,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:21,583 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 12:18:21,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733548334] [2022-01-10 12:18:21,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733548334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:21,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:21,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:18:21,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653853037] [2022-01-10 12:18:21,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:21,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:18:21,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:18:21,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:21,584 INFO L87 Difference]: Start difference. First operand 23413 states and 38573 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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)