/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:07:56,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:07:56,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:07:56,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:07:56,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:07:56,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:07:56,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:07:56,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:07:56,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:07:56,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:07:56,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:07:56,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:07:56,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:07:56,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:07:56,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:07:56,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:07:56,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:07:56,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:07:56,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:07:56,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:07:56,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:07:56,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:07:56,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:07:56,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:07:56,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:07:56,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:07:56,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:07:56,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:07:56,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:07:56,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:07:56,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:07:56,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:07:56,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:07:56,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:07:56,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:07:56,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:07:56,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:07:56,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:07:56,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:07:56,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:07:56,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:07:56,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:07:56,609 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:07:56,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:07:56,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:07:56,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:07:56,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:07:56,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:07:56,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:07:56,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:07:56,611 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:07:56,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:07:56,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:07:56,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:07:56,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:56,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:07:56,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:07:56,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:07:56,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:07:56,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:07:56,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:07:56,811 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:07:56,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.04.cil.c [2022-01-10 01:07:56,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349d07da6/514bdfbd15c54f1ca7328fd39b854ceb/FLAG9d20bda18 [2022-01-10 01:07:57,235 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:07:57,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.04.cil.c [2022-01-10 01:07:57,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349d07da6/514bdfbd15c54f1ca7328fd39b854ceb/FLAG9d20bda18 [2022-01-10 01:07:57,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349d07da6/514bdfbd15c54f1ca7328fd39b854ceb [2022-01-10 01:07:57,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:07:57,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:07:57,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:57,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:07:57,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:07:57,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253cea07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57, skipping insertion in model container [2022-01-10 01:07:57,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:07:57,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:07:57,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.04.cil.c[706,719] [2022-01-10 01:07:57,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:57,479 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:07:57,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.04.cil.c[706,719] [2022-01-10 01:07:57,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:57,538 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:07:57,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57 WrapperNode [2022-01-10 01:07:57,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:57,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:57,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:07:57,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:07:57,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,599 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2022-01-10 01:07:57,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:57,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:07:57,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:07:57,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:07:57,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:07:57,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:07:57,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:07:57,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:07:57,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (1/1) ... [2022-01-10 01:07:57,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:07:57,665 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 01:07:57,694 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 01:07:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:07:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:07:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:07:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:07:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:07:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:07:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:07:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:07:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:07:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:07:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:07:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:07:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:07:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:07:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:07:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:07:57,785 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:07:57,786 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:07:58,063 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:07:58,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:07:58,069 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 01:07:58,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:58 BoogieIcfgContainer [2022-01-10 01:07:58,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:07:58,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:07:58,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:07:58,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:07:58,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:57" (1/3) ... [2022-01-10 01:07:58,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f6966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:58, skipping insertion in model container [2022-01-10 01:07:58,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:57" (2/3) ... [2022-01-10 01:07:58,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f6966b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:58, skipping insertion in model container [2022-01-10 01:07:58,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:58" (3/3) ... [2022-01-10 01:07:58,076 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2022-01-10 01:07:58,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:07:58,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:07:58,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:07:58,114 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 01:07:58,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:07:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-10 01:07:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:07:58,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:58,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:58,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1239760114, now seen corresponding path program 1 times [2022-01-10 01:07:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:58,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344852510] [2022-01-10 01:07:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:58,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:07:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:07:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:07:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:07:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,492 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 01:07:58,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:58,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344852510] [2022-01-10 01:07:58,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344852510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:58,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:58,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:07:58,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696676138] [2022-01-10 01:07:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:58,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:07:58,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:07:58,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:07:58,520 INFO L87 Difference]: Start difference. First operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:59,433 INFO L93 Difference]: Finished difference Result 613 states and 986 transitions. [2022-01-10 01:07:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:07:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:07:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:59,453 INFO L225 Difference]: With dead ends: 613 [2022-01-10 01:07:59,453 INFO L226 Difference]: Without dead ends: 439 [2022-01-10 01:07:59,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:07:59,465 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 612 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:59,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 766 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:07:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-10 01:07:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 335. [2022-01-10 01:07:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 294 states have internal predecessors, (441), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-01-10 01:07:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2022-01-10 01:07:59,520 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 91 [2022-01-10 01:07:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:59,521 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2022-01-10 01:07:59,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2022-01-10 01:07:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:07:59,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:59,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:59,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:07:59,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash -233016211, now seen corresponding path program 1 times [2022-01-10 01:07:59,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:59,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062503041] [2022-01-10 01:07:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:59,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:07:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:07:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:07:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:07:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,671 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 01:07:59,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:59,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062503041] [2022-01-10 01:07:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062503041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:59,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:59,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:59,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383390355] [2022-01-10 01:07:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:59,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:59,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:59,674 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:00,711 INFO L93 Difference]: Finished difference Result 1045 states and 1585 transitions. [2022-01-10 01:08:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:00,722 INFO L225 Difference]: With dead ends: 1045 [2022-01-10 01:08:00,723 INFO L226 Difference]: Without dead ends: 722 [2022-01-10 01:08:00,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:00,728 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 647 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:00,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 1335 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-01-10 01:08:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 487. [2022-01-10 01:08:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 425 states have (on average 1.5011764705882353) internal successors, (638), 428 states have internal predecessors, (638), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-01-10 01:08:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 725 transitions. [2022-01-10 01:08:00,777 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 725 transitions. Word has length 91 [2022-01-10 01:08:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:00,778 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 725 transitions. [2022-01-10 01:08:00,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 725 transitions. [2022-01-10 01:08:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:00,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:00,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:00,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:08:00,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1984614187, now seen corresponding path program 1 times [2022-01-10 01:08:00,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341443074] [2022-01-10 01:08:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:00,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,926 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 01:08:00,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:00,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341443074] [2022-01-10 01:08:00,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341443074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:00,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:00,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:00,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268158586] [2022-01-10 01:08:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:00,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:00,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:00,928 INFO L87 Difference]: Start difference. First operand 487 states and 725 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:01,953 INFO L93 Difference]: Finished difference Result 1603 states and 2422 transitions. [2022-01-10 01:08:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:01,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:01,959 INFO L225 Difference]: With dead ends: 1603 [2022-01-10 01:08:01,959 INFO L226 Difference]: Without dead ends: 1128 [2022-01-10 01:08:01,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:01,961 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 644 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:01,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1327 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-01-10 01:08:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 792. [2022-01-10 01:08:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 692 states have (on average 1.4927745664739884) internal successors, (1033), 697 states have internal predecessors, (1033), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-01-10 01:08:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1176 transitions. [2022-01-10 01:08:01,992 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1176 transitions. Word has length 91 [2022-01-10 01:08:01,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:01,992 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1176 transitions. [2022-01-10 01:08:01,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:01,993 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1176 transitions. [2022-01-10 01:08:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:01,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:01,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:01,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:08:01,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:01,994 INFO L85 PathProgramCache]: Analyzing trace with hash -576248659, now seen corresponding path program 1 times [2022-01-10 01:08:01,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:01,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092790052] [2022-01-10 01:08:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:01,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,060 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 01:08:02,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092790052] [2022-01-10 01:08:02,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092790052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:02,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:02,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:02,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170337549] [2022-01-10 01:08:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:02,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:02,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:02,061 INFO L87 Difference]: Start difference. First operand 792 states and 1176 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:03,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:03,074 INFO L93 Difference]: Finished difference Result 2682 states and 4037 transitions. [2022-01-10 01:08:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:03,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:03,082 INFO L225 Difference]: With dead ends: 2682 [2022-01-10 01:08:03,082 INFO L226 Difference]: Without dead ends: 1902 [2022-01-10 01:08:03,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:03,084 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 688 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:03,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 955 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-01-10 01:08:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1403. [2022-01-10 01:08:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1227 states have (on average 1.4857375713121435) internal successors, (1823), 1236 states have internal predecessors, (1823), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-01-10 01:08:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2084 transitions. [2022-01-10 01:08:03,132 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2084 transitions. Word has length 91 [2022-01-10 01:08:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:03,132 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 2084 transitions. [2022-01-10 01:08:03,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2084 transitions. [2022-01-10 01:08:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:03,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:03,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:03,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:08:03,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 310974187, now seen corresponding path program 1 times [2022-01-10 01:08:03,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141080532] [2022-01-10 01:08:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:03,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:03,194 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 01:08:03,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:03,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141080532] [2022-01-10 01:08:03,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141080532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:03,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:03,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:03,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775466606] [2022-01-10 01:08:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:03,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:03,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:03,195 INFO L87 Difference]: Start difference. First operand 1403 states and 2084 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:04,180 INFO L93 Difference]: Finished difference Result 4839 states and 7283 transitions. [2022-01-10 01:08:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:04,194 INFO L225 Difference]: With dead ends: 4839 [2022-01-10 01:08:04,194 INFO L226 Difference]: Without dead ends: 3448 [2022-01-10 01:08:04,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:04,199 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 636 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:04,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 1319 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-01-10 01:08:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2630. [2022-01-10 01:08:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2302 states have (on average 1.4808861859252824) internal successors, (3409), 2319 states have internal predecessors, (3409), 209 states have call successors, (209), 102 states have call predecessors, (209), 118 states have return successors, (306), 224 states have call predecessors, (306), 209 states have call successors, (306) [2022-01-10 01:08:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3924 transitions. [2022-01-10 01:08:04,338 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3924 transitions. Word has length 91 [2022-01-10 01:08:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:04,339 INFO L470 AbstractCegarLoop]: Abstraction has 2630 states and 3924 transitions. [2022-01-10 01:08:04,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3924 transitions. [2022-01-10 01:08:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:04,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:04,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:04,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:08:04,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1600068371, now seen corresponding path program 1 times [2022-01-10 01:08:04,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440266989] [2022-01-10 01:08:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:04,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,436 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 01:08:04,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440266989] [2022-01-10 01:08:04,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440266989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:04,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:04,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:04,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051077460] [2022-01-10 01:08:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:04,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:04,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:04,438 INFO L87 Difference]: Start difference. First operand 2630 states and 3924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:05,620 INFO L93 Difference]: Finished difference Result 10016 states and 15083 transitions. [2022-01-10 01:08:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:05,650 INFO L225 Difference]: With dead ends: 10016 [2022-01-10 01:08:05,650 INFO L226 Difference]: Without dead ends: 7398 [2022-01-10 01:08:05,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:05,660 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 665 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:05,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 1305 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2022-01-10 01:08:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 5033. [2022-01-10 01:08:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4417 states have (on average 1.4831333484265339) internal successors, (6551), 4450 states have internal predecessors, (6551), 385 states have call successors, (385), 198 states have call predecessors, (385), 230 states have return successors, (660), 416 states have call predecessors, (660), 385 states have call successors, (660) [2022-01-10 01:08:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 7596 transitions. [2022-01-10 01:08:05,928 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 7596 transitions. Word has length 91 [2022-01-10 01:08:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:05,928 INFO L470 AbstractCegarLoop]: Abstraction has 5033 states and 7596 transitions. [2022-01-10 01:08:05,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 7596 transitions. [2022-01-10 01:08:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:05,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:05,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:05,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:08:05,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1523167573, now seen corresponding path program 1 times [2022-01-10 01:08:05,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183284189] [2022-01-10 01:08:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,013 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 01:08:06,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:06,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183284189] [2022-01-10 01:08:06,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183284189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:06,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:06,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:06,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033139696] [2022-01-10 01:08:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:06,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:06,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:06,017 INFO L87 Difference]: Start difference. First operand 5033 states and 7596 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:07,342 INFO L93 Difference]: Finished difference Result 18865 states and 28677 transitions. [2022-01-10 01:08:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:07,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:07,410 INFO L225 Difference]: With dead ends: 18865 [2022-01-10 01:08:07,410 INFO L226 Difference]: Without dead ends: 13844 [2022-01-10 01:08:07,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:07,426 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 727 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:07,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1255 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13844 states. [2022-01-10 01:08:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13844 to 9836. [2022-01-10 01:08:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 8660 states have (on average 1.4851039260969976) internal successors, (12861), 8725 states have internal predecessors, (12861), 721 states have call successors, (721), 390 states have call predecessors, (721), 454 states have return successors, (1514), 784 states have call predecessors, (1514), 721 states have call successors, (1514) [2022-01-10 01:08:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 15096 transitions. [2022-01-10 01:08:07,958 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 15096 transitions. Word has length 91 [2022-01-10 01:08:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:07,958 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 15096 transitions. [2022-01-10 01:08:07,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 15096 transitions. [2022-01-10 01:08:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:07,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:07,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:07,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:08:07,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:07,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1804449069, now seen corresponding path program 1 times [2022-01-10 01:08:07,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:07,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967675654] [2022-01-10 01:08:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:07,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:08,037 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 01:08:08,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:08,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967675654] [2022-01-10 01:08:08,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967675654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:08,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:08,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:08,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589683204] [2022-01-10 01:08:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:08,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:08,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:08,039 INFO L87 Difference]: Start difference. First operand 9836 states and 15096 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:09,692 INFO L93 Difference]: Finished difference Result 35059 states and 54211 transitions. [2022-01-10 01:08:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:09,774 INFO L225 Difference]: With dead ends: 35059 [2022-01-10 01:08:09,775 INFO L226 Difference]: Without dead ends: 25235 [2022-01-10 01:08:09,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:09,804 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 629 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:09,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 1292 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25235 states. [2022-01-10 01:08:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25235 to 19472. [2022-01-10 01:08:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19472 states, 17208 states have (on average 1.4898303114830311) internal successors, (25637), 17337 states have internal predecessors, (25637), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-01-10 01:08:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 30674 transitions. [2022-01-10 01:08:10,716 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 30674 transitions. Word has length 91 [2022-01-10 01:08:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:10,718 INFO L470 AbstractCegarLoop]: Abstraction has 19472 states and 30674 transitions. [2022-01-10 01:08:10,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 30674 transitions. [2022-01-10 01:08:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:10,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:10,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:10,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:08:10,746 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1311822895, now seen corresponding path program 1 times [2022-01-10 01:08:10,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:10,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803293915] [2022-01-10 01:08:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:10,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:10,838 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 01:08:10,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803293915] [2022-01-10 01:08:10,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803293915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:10,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:10,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:10,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610660403] [2022-01-10 01:08:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:10,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:10,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:10,840 INFO L87 Difference]: Start difference. First operand 19472 states and 30674 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:12,600 INFO L93 Difference]: Finished difference Result 42704 states and 67413 transitions. [2022-01-10 01:08:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:08:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:12,703 INFO L225 Difference]: With dead ends: 42704 [2022-01-10 01:08:12,703 INFO L226 Difference]: Without dead ends: 23245 [2022-01-10 01:08:12,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:08:12,748 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:12,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 846 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:08:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23245 states. [2022-01-10 01:08:13,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23245 to 19475. [2022-01-10 01:08:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19475 states, 17211 states have (on average 1.4823078263900993) internal successors, (25512), 17340 states have internal predecessors, (25512), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-01-10 01:08:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19475 states to 19475 states and 30549 transitions. [2022-01-10 01:08:13,752 INFO L78 Accepts]: Start accepts. Automaton has 19475 states and 30549 transitions. Word has length 91 [2022-01-10 01:08:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:13,752 INFO L470 AbstractCegarLoop]: Abstraction has 19475 states and 30549 transitions. [2022-01-10 01:08:13,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 19475 states and 30549 transitions. [2022-01-10 01:08:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:13,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:13,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:13,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:08:13,771 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1513646829, now seen corresponding path program 1 times [2022-01-10 01:08:13,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:13,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028148582] [2022-01-10 01:08:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:13,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:13,864 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 01:08:13,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028148582] [2022-01-10 01:08:13,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028148582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:13,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:13,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:13,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532660794] [2022-01-10 01:08:13,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:13,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:13,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:13,865 INFO L87 Difference]: Start difference. First operand 19475 states and 30549 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:16,320 INFO L93 Difference]: Finished difference Result 50130 states and 77784 transitions. [2022-01-10 01:08:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:16,435 INFO L225 Difference]: With dead ends: 50130 [2022-01-10 01:08:16,435 INFO L226 Difference]: Without dead ends: 30668 [2022-01-10 01:08:16,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:16,469 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:16,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 835 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30668 states. [2022-01-10 01:08:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30668 to 19862. [2022-01-10 01:08:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19862 states, 17598 states have (on average 1.4717013296965564) internal successors, (25899), 17727 states have internal predecessors, (25899), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-01-10 01:08:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 30936 transitions. [2022-01-10 01:08:17,582 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 30936 transitions. Word has length 91 [2022-01-10 01:08:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:17,582 INFO L470 AbstractCegarLoop]: Abstraction has 19862 states and 30936 transitions. [2022-01-10 01:08:17,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 30936 transitions. [2022-01-10 01:08:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:17,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:17,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:17,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:08:17,600 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1905301461, now seen corresponding path program 1 times [2022-01-10 01:08:17,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:17,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463599712] [2022-01-10 01:08:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:17,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,698 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 01:08:17,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463599712] [2022-01-10 01:08:17,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463599712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:17,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:17,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:17,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189660096] [2022-01-10 01:08:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:17,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:17,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:17,700 INFO L87 Difference]: Start difference. First operand 19862 states and 30936 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:22,782 INFO L93 Difference]: Finished difference Result 88631 states and 139259 transitions. [2022-01-10 01:08:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:08:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:23,042 INFO L225 Difference]: With dead ends: 88631 [2022-01-10 01:08:23,042 INFO L226 Difference]: Without dead ends: 68782 [2022-01-10 01:08:23,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:23,226 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 1546 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:23,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 1131 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:08:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68782 states. [2022-01-10 01:08:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68782 to 56490. [2022-01-10 01:08:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56490 states, 49916 states have (on average 1.474136549402997) internal successors, (73583), 50431 states have internal predecessors, (73583), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-01-10 01:08:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56490 states to 56490 states and 88086 transitions. [2022-01-10 01:08:26,113 INFO L78 Accepts]: Start accepts. Automaton has 56490 states and 88086 transitions. Word has length 91 [2022-01-10 01:08:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:26,114 INFO L470 AbstractCegarLoop]: Abstraction has 56490 states and 88086 transitions. [2022-01-10 01:08:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 56490 states and 88086 transitions. [2022-01-10 01:08:26,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:26,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:26,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:26,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:08:26,130 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:26,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1688097610, now seen corresponding path program 1 times [2022-01-10 01:08:26,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:26,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344189633] [2022-01-10 01:08:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:26,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:26,191 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 01:08:26,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:26,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344189633] [2022-01-10 01:08:26,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344189633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:26,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:26,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:26,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345537626] [2022-01-10 01:08:26,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:26,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:26,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:26,192 INFO L87 Difference]: Start difference. First operand 56490 states and 88086 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:31,936 INFO L93 Difference]: Finished difference Result 134367 states and 210531 transitions. [2022-01-10 01:08:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:32,193 INFO L225 Difference]: With dead ends: 134367 [2022-01-10 01:08:32,193 INFO L226 Difference]: Without dead ends: 77890 [2022-01-10 01:08:32,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:32,313 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 408 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:32,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 827 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:08:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77890 states. [2022-01-10 01:08:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77890 to 57072. [2022-01-10 01:08:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57072 states, 50498 states have (on average 1.464830290308527) internal successors, (73971), 51013 states have internal predecessors, (73971), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-01-10 01:08:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57072 states to 57072 states and 88474 transitions. [2022-01-10 01:08:35,857 INFO L78 Accepts]: Start accepts. Automaton has 57072 states and 88474 transitions. Word has length 91 [2022-01-10 01:08:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 57072 states and 88474 transitions. [2022-01-10 01:08:35,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 57072 states and 88474 transitions. [2022-01-10 01:08:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:35,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:35,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:35,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:08:35,872 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -667707640, now seen corresponding path program 1 times [2022-01-10 01:08:35,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:35,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658739151] [2022-01-10 01:08:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:35,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:35,921 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 01:08:35,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:35,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658739151] [2022-01-10 01:08:35,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658739151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:35,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:35,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:08:35,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597951233] [2022-01-10 01:08:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:35,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:08:35,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:08:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:08:35,922 INFO L87 Difference]: Start difference. First operand 57072 states and 88474 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:45,091 INFO L93 Difference]: Finished difference Result 192369 states and 297483 transitions. [2022-01-10 01:08:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:08:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-01-10 01:08:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:45,783 INFO L225 Difference]: With dead ends: 192369 [2022-01-10 01:08:45,784 INFO L226 Difference]: Without dead ends: 135310 [2022-01-10 01:08:45,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:08:45,931 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 917 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:45,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 984 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:08:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135310 states. [2022-01-10 01:08:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135310 to 111939. [2022-01-10 01:08:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111939 states, 99024 states have (on average 1.4583636290192277) internal successors, (144413), 100053 states have internal predecessors, (144413), 7538 states have call successors, (7538), 4608 states have call predecessors, (7538), 5376 states have return successors, (20810), 7405 states have call predecessors, (20810), 7538 states have call successors, (20810) [2022-01-10 01:08:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111939 states to 111939 states and 172761 transitions. [2022-01-10 01:08:53,357 INFO L78 Accepts]: Start accepts. Automaton has 111939 states and 172761 transitions. Word has length 91 [2022-01-10 01:08:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:53,357 INFO L470 AbstractCegarLoop]: Abstraction has 111939 states and 172761 transitions. [2022-01-10 01:08:53,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 111939 states and 172761 transitions. [2022-01-10 01:08:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 01:08:53,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:53,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:53,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:08:53,373 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1975712409, now seen corresponding path program 1 times [2022-01-10 01:08:53,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460814604] [2022-01-10 01:08:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:53,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-10 01:08:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-10 01:08:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-10 01:08:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 01:08:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:53,443 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 01:08:53,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:53,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460814604] [2022-01-10 01:08:53,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460814604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:53,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:53,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:53,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258479191] [2022-01-10 01:08:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:53,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:53,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:53,444 INFO L87 Difference]: Start difference. First operand 111939 states and 172761 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)