/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:17:17,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:17:17,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:17:17,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:17:17,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:17:17,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:17:17,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:17:17,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:17:17,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:17:17,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:17:17,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:17:17,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:17:17,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:17:17,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:17:17,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:17:17,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:17:17,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:17:17,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:17:17,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:17:17,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:17:17,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:17:17,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:17:17,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:17:17,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:17:17,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:17:17,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:17:17,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:17:17,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:17:17,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:17:17,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:17:17,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:17:17,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:17:17,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:17:17,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:17:17,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:17:17,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:17:17,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:17:17,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:17:17,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:17:17,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:17:17,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:17:17,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:17:17,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:17:17,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:17:17,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:17:17,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:17:17,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:17:17,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:17:17,643 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:17:17,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:17:17,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:17:17,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:17:17,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:17:17,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:17:17,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:17:17,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:17:17,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:17:17,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:17:17,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:17:17,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:17:17,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:17:17,647 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:17:17,648 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:17:17,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:17:17,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:17:17,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:17:17,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:17:17,885 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:17:17,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2022-01-11 00:17:17,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c448d842d/fef46cdc4df34954b213abb979b84883/FLAGd033da408 [2022-01-11 00:17:18,337 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:17:18,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2022-01-11 00:17:18,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c448d842d/fef46cdc4df34954b213abb979b84883/FLAGd033da408 [2022-01-11 00:17:18,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c448d842d/fef46cdc4df34954b213abb979b84883 [2022-01-11 00:17:18,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:17:18,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:17:18,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:17:18,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:17:18,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:17:18,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3b468c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18, skipping insertion in model container [2022-01-11 00:17:18,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:17:18,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:17:18,545 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/token_ring.04.cil-2.c[671,684] [2022-01-11 00:17:18,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:17:18,622 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:17:18,630 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/token_ring.04.cil-2.c[671,684] [2022-01-11 00:17:18,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:17:18,689 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:17:18,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18 WrapperNode [2022-01-11 00:17:18,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:17:18,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:17:18,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:17:18,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:17:18,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,753 INFO L137 Inliner]: procedures = 36, calls = 44, calls flagged for inlining = 39, calls inlined = 78, statements flattened = 1074 [2022-01-11 00:17:18,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:17:18,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:17:18,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:17:18,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:17:18,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:17:18,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:17:18,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:17:18,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:17:18,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (1/1) ... [2022-01-11 00:17:18,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:17:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:17:18,844 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) [2022-01-11 00:17:18,865 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 [2022-01-11 00:17:18,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:17:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:17:18,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:17:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:17:18,977 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:17:18,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:17:19,743 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:17:19,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:17:19,764 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-11 00:17:19,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:19 BoogieIcfgContainer [2022-01-11 00:17:19,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:17:19,768 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:17:19,768 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:17:19,769 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:17:19,772 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:19" (1/1) ... [2022-01-11 00:17:19,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:17:19 BasicIcfg [2022-01-11 00:17:19,936 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:17:19,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:17:19,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:17:19,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:17:19,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:17:18" (1/4) ... [2022-01-11 00:17:19,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3829e281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:17:19, skipping insertion in model container [2022-01-11 00:17:19,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:18" (2/4) ... [2022-01-11 00:17:19,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3829e281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:17:19, skipping insertion in model container [2022-01-11 00:17:19,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:19" (3/4) ... [2022-01-11 00:17:19,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3829e281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:17:19, skipping insertion in model container [2022-01-11 00:17:19,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:17:19" (4/4) ... [2022-01-11 00:17:19,943 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-2.cTransformedIcfg [2022-01-11 00:17:19,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:17:19,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:17:19,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:17:19,996 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 [2022-01-11 00:17:19,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:17:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 440 states, 437 states have (on average 1.540045766590389) internal successors, (673), 439 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:20,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:20,032 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] [2022-01-11 00:17:20,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1539679110, now seen corresponding path program 1 times [2022-01-11 00:17:20,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:20,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184816748] [2022-01-11 00:17:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:20,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:20,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:20,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184816748] [2022-01-11 00:17:20,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184816748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:20,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:20,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:20,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875919777] [2022-01-11 00:17:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:20,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:20,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:20,384 INFO L87 Difference]: Start difference. First operand has 440 states, 437 states have (on average 1.540045766590389) internal successors, (673), 439 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:20,547 INFO L93 Difference]: Finished difference Result 1201 states and 1838 transitions. [2022-01-11 00:17:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:20,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:20,569 INFO L225 Difference]: With dead ends: 1201 [2022-01-11 00:17:20,569 INFO L226 Difference]: Without dead ends: 764 [2022-01-11 00:17:20,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:20,579 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 587 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:20,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1190 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-11 00:17:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 760. [2022-01-11 00:17:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4986807387862797) internal successors, (1136), 759 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1136 transitions. [2022-01-11 00:17:20,678 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1136 transitions. Word has length 76 [2022-01-11 00:17:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1136 transitions. [2022-01-11 00:17:20,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1136 transitions. [2022-01-11 00:17:20,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:20,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:20,688 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] [2022-01-11 00:17:20,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:17:20,689 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1243969702, now seen corresponding path program 1 times [2022-01-11 00:17:20,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:20,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689154311] [2022-01-11 00:17:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:20,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:20,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:20,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689154311] [2022-01-11 00:17:20,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689154311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:20,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:20,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:20,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875525129] [2022-01-11 00:17:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:20,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:20,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:20,794 INFO L87 Difference]: Start difference. First operand 760 states and 1136 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:20,835 INFO L93 Difference]: Finished difference Result 1508 states and 2254 transitions. [2022-01-11 00:17:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:20,838 INFO L225 Difference]: With dead ends: 1508 [2022-01-11 00:17:20,839 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:20,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:20,844 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:20,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 639 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4881266490765173) internal successors, (1128), 759 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1128 transitions. [2022-01-11 00:17:20,873 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1128 transitions. Word has length 76 [2022-01-11 00:17:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:20,874 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1128 transitions. [2022-01-11 00:17:20,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1128 transitions. [2022-01-11 00:17:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:20,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:20,881 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] [2022-01-11 00:17:20,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:17:20,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1813610618, now seen corresponding path program 1 times [2022-01-11 00:17:20,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520543015] [2022-01-11 00:17:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:20,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:20,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:20,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520543015] [2022-01-11 00:17:20,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520543015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:20,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:20,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:20,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89014009] [2022-01-11 00:17:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:20,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:20,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:20,966 INFO L87 Difference]: Start difference. First operand 760 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,006 INFO L93 Difference]: Finished difference Result 1507 states and 2237 transitions. [2022-01-11 00:17:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,010 INFO L225 Difference]: With dead ends: 1507 [2022-01-11 00:17:21,010 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,018 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 634 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4775725593667546) internal successors, (1120), 759 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1120 transitions. [2022-01-11 00:17:21,047 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1120 transitions. Word has length 76 [2022-01-11 00:17:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,048 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1120 transitions. [2022-01-11 00:17:21,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1120 transitions. [2022-01-11 00:17:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,050 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] [2022-01-11 00:17:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:17:21,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1551441062, now seen corresponding path program 1 times [2022-01-11 00:17:21,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272087325] [2022-01-11 00:17:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272087325] [2022-01-11 00:17:21,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272087325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947938173] [2022-01-11 00:17:21,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,128 INFO L87 Difference]: Start difference. First operand 760 states and 1120 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,192 INFO L93 Difference]: Finished difference Result 1506 states and 2220 transitions. [2022-01-11 00:17:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,196 INFO L225 Difference]: With dead ends: 1506 [2022-01-11 00:17:21,196 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,202 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 621 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 629 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4670184696569921) internal successors, (1112), 759 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1112 transitions. [2022-01-11 00:17:21,233 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1112 transitions. Word has length 76 [2022-01-11 00:17:21,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,234 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1112 transitions. [2022-01-11 00:17:21,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1112 transitions. [2022-01-11 00:17:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,235 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] [2022-01-11 00:17:21,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:17:21,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash -695313530, now seen corresponding path program 1 times [2022-01-11 00:17:21,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990052356] [2022-01-11 00:17:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990052356] [2022-01-11 00:17:21,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990052356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491739791] [2022-01-11 00:17:21,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,294 INFO L87 Difference]: Start difference. First operand 760 states and 1112 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,338 INFO L93 Difference]: Finished difference Result 1505 states and 2203 transitions. [2022-01-11 00:17:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,341 INFO L225 Difference]: With dead ends: 1505 [2022-01-11 00:17:21,341 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,343 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 615 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 624 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4564643799472297) internal successors, (1104), 759 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1104 transitions. [2022-01-11 00:17:21,372 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1104 transitions. Word has length 76 [2022-01-11 00:17:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,373 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1104 transitions. [2022-01-11 00:17:21,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1104 transitions. [2022-01-11 00:17:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,381 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] [2022-01-11 00:17:21,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:17:21,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2003157158, now seen corresponding path program 1 times [2022-01-11 00:17:21,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415679213] [2022-01-11 00:17:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415679213] [2022-01-11 00:17:21,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415679213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653514084] [2022-01-11 00:17:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,447 INFO L87 Difference]: Start difference. First operand 760 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,507 INFO L93 Difference]: Finished difference Result 1504 states and 2186 transitions. [2022-01-11 00:17:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,511 INFO L225 Difference]: With dead ends: 1504 [2022-01-11 00:17:21,511 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,513 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 550 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 653 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.4300791556728232) internal successors, (1084), 759 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1084 transitions. [2022-01-11 00:17:21,558 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1084 transitions. Word has length 76 [2022-01-11 00:17:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,559 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1084 transitions. [2022-01-11 00:17:21,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1084 transitions. [2022-01-11 00:17:21,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,560 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] [2022-01-11 00:17:21,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:17:21,560 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1997048325, now seen corresponding path program 1 times [2022-01-11 00:17:21,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643079793] [2022-01-11 00:17:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643079793] [2022-01-11 00:17:21,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643079793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792261296] [2022-01-11 00:17:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,610 INFO L87 Difference]: Start difference. First operand 760 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,675 INFO L93 Difference]: Finished difference Result 1502 states and 2143 transitions. [2022-01-11 00:17:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,678 INFO L225 Difference]: With dead ends: 1502 [2022-01-11 00:17:21,678 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,680 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 537 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 640 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.403693931398417) internal successors, (1064), 759 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1064 transitions. [2022-01-11 00:17:21,711 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1064 transitions. Word has length 76 [2022-01-11 00:17:21,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,711 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1064 transitions. [2022-01-11 00:17:21,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1064 transitions. [2022-01-11 00:17:21,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,712 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] [2022-01-11 00:17:21,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:17:21,712 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1079775716, now seen corresponding path program 1 times [2022-01-11 00:17:21,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497737522] [2022-01-11 00:17:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497737522] [2022-01-11 00:17:21,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497737522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902195080] [2022-01-11 00:17:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,748 INFO L87 Difference]: Start difference. First operand 760 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,807 INFO L93 Difference]: Finished difference Result 1501 states and 2102 transitions. [2022-01-11 00:17:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,811 INFO L225 Difference]: With dead ends: 1501 [2022-01-11 00:17:21,811 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,814 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 525 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 627 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.3773087071240107) internal successors, (1044), 759 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1044 transitions. [2022-01-11 00:17:21,849 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1044 transitions. Word has length 76 [2022-01-11 00:17:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:21,849 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1044 transitions. [2022-01-11 00:17:21,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1044 transitions. [2022-01-11 00:17:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:21,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:21,850 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] [2022-01-11 00:17:21,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:17:21,850 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 437865283, now seen corresponding path program 1 times [2022-01-11 00:17:21,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:21,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467067336] [2022-01-11 00:17:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:21,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:21,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:21,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467067336] [2022-01-11 00:17:21,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467067336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:21,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:21,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:21,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145140171] [2022-01-11 00:17:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:21,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:21,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,892 INFO L87 Difference]: Start difference. First operand 760 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:21,962 INFO L93 Difference]: Finished difference Result 1500 states and 2061 transitions. [2022-01-11 00:17:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:21,965 INFO L225 Difference]: With dead ends: 1500 [2022-01-11 00:17:21,965 INFO L226 Difference]: Without dead ends: 760 [2022-01-11 00:17:21,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:21,968 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 513 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 614 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-11 00:17:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-01-11 00:17:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 758 states have (on average 1.3509234828496042) internal successors, (1024), 759 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1024 transitions. [2022-01-11 00:17:22,002 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1024 transitions. Word has length 76 [2022-01-11 00:17:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1024 transitions. [2022-01-11 00:17:22,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1024 transitions. [2022-01-11 00:17:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:22,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:22,003 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] [2022-01-11 00:17:22,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:17:22,004 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 931221922, now seen corresponding path program 1 times [2022-01-11 00:17:22,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632565054] [2022-01-11 00:17:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:22,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:22,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:22,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632565054] [2022-01-11 00:17:22,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632565054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:22,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:22,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:22,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436586855] [2022-01-11 00:17:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:22,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:22,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:22,047 INFO L87 Difference]: Start difference. First operand 760 states and 1024 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:22,136 INFO L93 Difference]: Finished difference Result 2094 states and 2821 transitions. [2022-01-11 00:17:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:22,141 INFO L225 Difference]: With dead ends: 2094 [2022-01-11 00:17:22,141 INFO L226 Difference]: Without dead ends: 1363 [2022-01-11 00:17:22,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:22,143 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 479 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:22,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 1047 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-01-11 00:17:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1355. [2022-01-11 00:17:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1353 states have (on average 1.3414634146341464) internal successors, (1815), 1354 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1815 transitions. [2022-01-11 00:17:22,206 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1815 transitions. Word has length 76 [2022-01-11 00:17:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:22,206 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 1815 transitions. [2022-01-11 00:17:22,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1815 transitions. [2022-01-11 00:17:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:22,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:22,207 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] [2022-01-11 00:17:22,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:17:22,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1432342687, now seen corresponding path program 1 times [2022-01-11 00:17:22,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:22,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040348690] [2022-01-11 00:17:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:22,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:22,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040348690] [2022-01-11 00:17:22,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040348690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:22,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:22,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:17:22,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159097515] [2022-01-11 00:17:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:22,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:17:22,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:17:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:17:22,262 INFO L87 Difference]: Start difference. First operand 1355 states and 1815 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:22,530 INFO L93 Difference]: Finished difference Result 3855 states and 5165 transitions. [2022-01-11 00:17:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:17:22,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:22,539 INFO L225 Difference]: With dead ends: 3855 [2022-01-11 00:17:22,540 INFO L226 Difference]: Without dead ends: 2533 [2022-01-11 00:17:22,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:17:22,542 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1713 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 2785 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:17:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-01-11 00:17:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1394. [2022-01-11 00:17:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1392 states have (on average 1.3232758620689655) internal successors, (1842), 1393 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1842 transitions. [2022-01-11 00:17:22,649 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1842 transitions. Word has length 76 [2022-01-11 00:17:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:22,650 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1842 transitions. [2022-01-11 00:17:22,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1842 transitions. [2022-01-11 00:17:22,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:22,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:22,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:22,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:17:22,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1161884130, now seen corresponding path program 1 times [2022-01-11 00:17:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955800949] [2022-01-11 00:17:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:22,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:22,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:22,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955800949] [2022-01-11 00:17:22,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955800949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:22,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:22,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:22,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251788696] [2022-01-11 00:17:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:22,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:22,690 INFO L87 Difference]: Start difference. First operand 1394 states and 1842 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:22,796 INFO L93 Difference]: Finished difference Result 2738 states and 3617 transitions. [2022-01-11 00:17:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:22,801 INFO L225 Difference]: With dead ends: 2738 [2022-01-11 00:17:22,801 INFO L226 Difference]: Without dead ends: 1361 [2022-01-11 00:17:22,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:22,804 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 455 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:22,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 593 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-01-11 00:17:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-01-11 00:17:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1359 states have (on average 1.304635761589404) internal successors, (1773), 1360 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1773 transitions. [2022-01-11 00:17:22,911 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1773 transitions. Word has length 76 [2022-01-11 00:17:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:22,912 INFO L470 AbstractCegarLoop]: Abstraction has 1361 states and 1773 transitions. [2022-01-11 00:17:22,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1773 transitions. [2022-01-11 00:17:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 00:17:22,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:22,913 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] [2022-01-11 00:17:22,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:17:22,913 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:22,914 INFO L85 PathProgramCache]: Analyzing trace with hash 317412259, now seen corresponding path program 1 times [2022-01-11 00:17:22,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:22,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903194019] [2022-01-11 00:17:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:22,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:22,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903194019] [2022-01-11 00:17:22,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903194019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:22,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:22,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:22,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344097052] [2022-01-11 00:17:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:22,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:22,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:22,976 INFO L87 Difference]: Start difference. First operand 1361 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:23,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:23,168 INFO L93 Difference]: Finished difference Result 3934 states and 5121 transitions. [2022-01-11 00:17:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 00:17:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:23,176 INFO L225 Difference]: With dead ends: 3934 [2022-01-11 00:17:23,177 INFO L226 Difference]: Without dead ends: 2595 [2022-01-11 00:17:23,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,179 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 452 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:23,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1011 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2022-01-11 00:17:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2455. [2022-01-11 00:17:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2453 states have (on average 1.2935181410517733) internal successors, (3173), 2454 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3173 transitions. [2022-01-11 00:17:23,345 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3173 transitions. Word has length 76 [2022-01-11 00:17:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:23,345 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 3173 transitions. [2022-01-11 00:17:23,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3173 transitions. [2022-01-11 00:17:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-11 00:17:23,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:23,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:23,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:17:23,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1903043490, now seen corresponding path program 1 times [2022-01-11 00:17:23,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:23,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391234183] [2022-01-11 00:17:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:23,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:23,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:23,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391234183] [2022-01-11 00:17:23,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391234183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:23,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:23,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:23,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924536132] [2022-01-11 00:17:23,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:23,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:23,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,414 INFO L87 Difference]: Start difference. First operand 2455 states and 3173 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:23,682 INFO L93 Difference]: Finished difference Result 7044 states and 9058 transitions. [2022-01-11 00:17:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-11 00:17:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:23,699 INFO L225 Difference]: With dead ends: 7044 [2022-01-11 00:17:23,699 INFO L226 Difference]: Without dead ends: 4654 [2022-01-11 00:17:23,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,703 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 376 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:23,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1297 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2022-01-11 00:17:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4650. [2022-01-11 00:17:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 4648 states have (on average 1.2753872633390706) internal successors, (5928), 4649 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 5928 transitions. [2022-01-11 00:17:24,014 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 5928 transitions. Word has length 123 [2022-01-11 00:17:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 4650 states and 5928 transitions. [2022-01-11 00:17:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 5928 transitions. [2022-01-11 00:17:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-11 00:17:24,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,018 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:17:24,019 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1165678015, now seen corresponding path program 1 times [2022-01-11 00:17:24,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009422616] [2022-01-11 00:17:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:24,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009422616] [2022-01-11 00:17:24,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009422616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:24,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271230739] [2022-01-11 00:17:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,051 INFO L87 Difference]: Start difference. First operand 4650 states and 5928 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,275 INFO L93 Difference]: Finished difference Result 8085 states and 10304 transitions. [2022-01-11 00:17:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-11 00:17:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,288 INFO L225 Difference]: With dead ends: 8085 [2022-01-11 00:17:24,289 INFO L226 Difference]: Without dead ends: 3500 [2022-01-11 00:17:24,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,297 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 556 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-01-11 00:17:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3500. [2022-01-11 00:17:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3498 states have (on average 1.2727272727272727) internal successors, (4452), 3499 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4452 transitions. [2022-01-11 00:17:24,540 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4452 transitions. Word has length 123 [2022-01-11 00:17:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,540 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 4452 transitions. [2022-01-11 00:17:24,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4452 transitions. [2022-01-11 00:17:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 00:17:24,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:17:24,543 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -424030836, now seen corresponding path program 1 times [2022-01-11 00:17:24,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447791938] [2022-01-11 00:17:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447791938] [2022-01-11 00:17:24,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447791938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:24,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942088892] [2022-01-11 00:17:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,593 INFO L87 Difference]: Start difference. First operand 3500 states and 4452 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,965 INFO L93 Difference]: Finished difference Result 10114 states and 12847 transitions. [2022-01-11 00:17:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 00:17:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,000 INFO L225 Difference]: With dead ends: 10114 [2022-01-11 00:17:25,000 INFO L226 Difference]: Without dead ends: 6679 [2022-01-11 00:17:25,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:25,009 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 480 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1219 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2022-01-11 00:17:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6459. [2022-01-11 00:17:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6459 states, 6457 states have (on average 1.2651386092612669) internal successors, (8169), 6458 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6459 states to 6459 states and 8169 transitions. [2022-01-11 00:17:25,501 INFO L78 Accepts]: Start accepts. Automaton has 6459 states and 8169 transitions. Word has length 124 [2022-01-11 00:17:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:25,501 INFO L470 AbstractCegarLoop]: Abstraction has 6459 states and 8169 transitions. [2022-01-11 00:17:25,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6459 states and 8169 transitions. [2022-01-11 00:17:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 00:17:25,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:25,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:25,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:17:25,506 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 472883565, now seen corresponding path program 1 times [2022-01-11 00:17:25,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:25,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615823510] [2022-01-11 00:17:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:25,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:25,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615823510] [2022-01-11 00:17:25,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615823510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:25,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:25,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:25,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209145138] [2022-01-11 00:17:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:25,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:25,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:25,538 INFO L87 Difference]: Start difference. First operand 6459 states and 8169 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:25,956 INFO L93 Difference]: Finished difference Result 12821 states and 16225 transitions. [2022-01-11 00:17:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:25,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 00:17:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,969 INFO L225 Difference]: With dead ends: 12821 [2022-01-11 00:17:25,970 INFO L226 Difference]: Without dead ends: 6401 [2022-01-11 00:17:25,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:25,980 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 550 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2022-01-11 00:17:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 6401. [2022-01-11 00:17:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6401 states, 6399 states have (on average 1.2659790592280045) internal successors, (8101), 6400 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 8101 transitions. [2022-01-11 00:17:26,405 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 8101 transitions. Word has length 124 [2022-01-11 00:17:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:26,405 INFO L470 AbstractCegarLoop]: Abstraction has 6401 states and 8101 transitions. [2022-01-11 00:17:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 8101 transitions. [2022-01-11 00:17:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 00:17:26,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:26,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:26,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:17:26,410 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 697085325, now seen corresponding path program 1 times [2022-01-11 00:17:26,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:26,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590862295] [2022-01-11 00:17:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:26,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:26,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590862295] [2022-01-11 00:17:26,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590862295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:26,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:26,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:26,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608182296] [2022-01-11 00:17:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:26,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:26,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:26,451 INFO L87 Difference]: Start difference. First operand 6401 states and 8101 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:27,140 INFO L93 Difference]: Finished difference Result 18370 states and 23226 transitions. [2022-01-11 00:17:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 00:17:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:27,166 INFO L225 Difference]: With dead ends: 18370 [2022-01-11 00:17:27,166 INFO L226 Difference]: Without dead ends: 12034 [2022-01-11 00:17:27,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:27,176 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 480 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:27,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1200 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12034 states. [2022-01-11 00:17:27,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12034 to 11766. [2022-01-11 00:17:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11766 states, 11764 states have (on average 1.2602856171370282) internal successors, (14826), 11765 states have internal predecessors, (14826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11766 states to 11766 states and 14826 transitions. [2022-01-11 00:17:27,907 INFO L78 Accepts]: Start accepts. Automaton has 11766 states and 14826 transitions. Word has length 125 [2022-01-11 00:17:27,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:27,907 INFO L470 AbstractCegarLoop]: Abstraction has 11766 states and 14826 transitions. [2022-01-11 00:17:27,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11766 states and 14826 transitions. [2022-01-11 00:17:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 00:17:27,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:27,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:27,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:17:27,914 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1842993750, now seen corresponding path program 1 times [2022-01-11 00:17:27,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:27,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660176587] [2022-01-11 00:17:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:27,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:27,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:27,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660176587] [2022-01-11 00:17:27,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660176587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:27,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:27,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:27,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546582655] [2022-01-11 00:17:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:27,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:27,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:27,940 INFO L87 Difference]: Start difference. First operand 11766 states and 14826 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:28,621 INFO L93 Difference]: Finished difference Result 23429 states and 29533 transitions. [2022-01-11 00:17:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:28,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 00:17:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:28,645 INFO L225 Difference]: With dead ends: 23429 [2022-01-11 00:17:28,645 INFO L226 Difference]: Without dead ends: 11709 [2022-01-11 00:17:28,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:28,661 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:28,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11709 states. [2022-01-11 00:17:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11709 to 11709. [2022-01-11 00:17:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11709 states, 11707 states have (on average 1.260784146237294) internal successors, (14760), 11708 states have internal predecessors, (14760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11709 states to 11709 states and 14760 transitions. [2022-01-11 00:17:29,203 INFO L78 Accepts]: Start accepts. Automaton has 11709 states and 14760 transitions. Word has length 125 [2022-01-11 00:17:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:29,204 INFO L470 AbstractCegarLoop]: Abstraction has 11709 states and 14760 transitions. [2022-01-11 00:17:29,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11709 states and 14760 transitions. [2022-01-11 00:17:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 00:17:29,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:29,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:29,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:17:29,213 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1199446499, now seen corresponding path program 1 times [2022-01-11 00:17:29,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:29,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403104705] [2022-01-11 00:17:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:29,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:29,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403104705] [2022-01-11 00:17:29,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403104705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:29,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:29,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:29,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598919185] [2022-01-11 00:17:29,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:29,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:29,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:29,262 INFO L87 Difference]: Start difference. First operand 11709 states and 14760 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:30,340 INFO L93 Difference]: Finished difference Result 33221 states and 41803 transitions. [2022-01-11 00:17:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-11 00:17:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:30,388 INFO L225 Difference]: With dead ends: 33221 [2022-01-11 00:17:30,388 INFO L226 Difference]: Without dead ends: 21577 [2022-01-11 00:17:30,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:30,412 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 425 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:30,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1162 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21577 states. [2022-01-11 00:17:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21577 to 21381. [2022-01-11 00:17:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21381 states, 21379 states have (on average 1.2565134010009822) internal successors, (26863), 21380 states have internal predecessors, (26863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21381 states to 21381 states and 26863 transitions. [2022-01-11 00:17:31,443 INFO L78 Accepts]: Start accepts. Automaton has 21381 states and 26863 transitions. Word has length 126 [2022-01-11 00:17:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:31,443 INFO L470 AbstractCegarLoop]: Abstraction has 21381 states and 26863 transitions. [2022-01-11 00:17:31,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21381 states and 26863 transitions. [2022-01-11 00:17:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 00:17:31,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:31,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:31,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:17:31,455 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 40332093, now seen corresponding path program 1 times [2022-01-11 00:17:31,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:31,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317820649] [2022-01-11 00:17:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:31,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:31,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:31,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317820649] [2022-01-11 00:17:31,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317820649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:31,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:31,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:31,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084813339] [2022-01-11 00:17:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:31,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:31,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:31,484 INFO L87 Difference]: Start difference. First operand 21381 states and 26863 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:32,448 INFO L93 Difference]: Finished difference Result 42653 states and 53601 transitions. [2022-01-11 00:17:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-11 00:17:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:32,486 INFO L225 Difference]: With dead ends: 42653 [2022-01-11 00:17:32,486 INFO L226 Difference]: Without dead ends: 21325 [2022-01-11 00:17:32,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:32,511 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 546 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:32,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 553 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21325 states. [2022-01-11 00:17:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21325 to 21325. [2022-01-11 00:17:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21325 states, 21323 states have (on average 1.2568118932607981) internal successors, (26799), 21324 states have internal predecessors, (26799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21325 states to 21325 states and 26799 transitions. [2022-01-11 00:17:33,477 INFO L78 Accepts]: Start accepts. Automaton has 21325 states and 26799 transitions. Word has length 126 [2022-01-11 00:17:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:33,477 INFO L470 AbstractCegarLoop]: Abstraction has 21325 states and 26799 transitions. [2022-01-11 00:17:33,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 21325 states and 26799 transitions. [2022-01-11 00:17:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 00:17:33,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:33,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:33,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:17:33,489 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash -433490559, now seen corresponding path program 1 times [2022-01-11 00:17:33,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:33,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075511650] [2022-01-11 00:17:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:33,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:33,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:33,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075511650] [2022-01-11 00:17:33,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075511650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:33,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:33,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:33,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421902244] [2022-01-11 00:17:33,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:33,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:33,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:33,551 INFO L87 Difference]: Start difference. First operand 21325 states and 26799 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:35,430 INFO L93 Difference]: Finished difference Result 61277 states and 76732 transitions. [2022-01-11 00:17:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 00:17:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:35,520 INFO L225 Difference]: With dead ends: 61277 [2022-01-11 00:17:35,521 INFO L226 Difference]: Without dead ends: 40017 [2022-01-11 00:17:35,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:35,565 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 457 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:35,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1545 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40017 states. [2022-01-11 00:17:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40017 to 40017. [2022-01-11 00:17:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40017 states, 40015 states have (on average 1.2400849681369486) internal successors, (49622), 40016 states have internal predecessors, (49622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40017 states to 40017 states and 49622 transitions. [2022-01-11 00:17:37,671 INFO L78 Accepts]: Start accepts. Automaton has 40017 states and 49622 transitions. Word has length 127 [2022-01-11 00:17:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:37,671 INFO L470 AbstractCegarLoop]: Abstraction has 40017 states and 49622 transitions. [2022-01-11 00:17:37,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 40017 states and 49622 transitions. [2022-01-11 00:17:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 00:17:37,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:37,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:37,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:17:37,700 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1627617292, now seen corresponding path program 1 times [2022-01-11 00:17:37,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:37,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687630461] [2022-01-11 00:17:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:37,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:37,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:37,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687630461] [2022-01-11 00:17:37,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687630461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:37,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:37,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:37,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019374806] [2022-01-11 00:17:37,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:37,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:37,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:37,746 INFO L87 Difference]: Start difference. First operand 40017 states and 49622 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:40,451 INFO L93 Difference]: Finished difference Result 97909 states and 121352 transitions. [2022-01-11 00:17:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:40,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-11 00:17:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:40,537 INFO L225 Difference]: With dead ends: 97909 [2022-01-11 00:17:40,537 INFO L226 Difference]: Without dead ends: 57955 [2022-01-11 00:17:40,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:40,674 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 360 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:40,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1006 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57955 states. [2022-01-11 00:17:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57955 to 57759. [2022-01-11 00:17:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57759 states, 57757 states have (on average 1.232924147722354) internal successors, (71210), 57758 states have internal predecessors, (71210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57759 states to 57759 states and 71210 transitions. [2022-01-11 00:17:43,477 INFO L78 Accepts]: Start accepts. Automaton has 57759 states and 71210 transitions. Word has length 164 [2022-01-11 00:17:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:43,477 INFO L470 AbstractCegarLoop]: Abstraction has 57759 states and 71210 transitions. [2022-01-11 00:17:43,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 57759 states and 71210 transitions. [2022-01-11 00:17:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 00:17:43,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:43,508 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:43,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:17:43,508 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 225869385, now seen corresponding path program 1 times [2022-01-11 00:17:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237475494] [2022-01-11 00:17:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:43,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:43,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237475494] [2022-01-11 00:17:43,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237475494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:43,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:43,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:43,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542431141] [2022-01-11 00:17:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:43,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:43,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:43,708 INFO L87 Difference]: Start difference. First operand 57759 states and 71210 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:47,747 INFO L93 Difference]: Finished difference Result 141381 states and 174274 transitions. [2022-01-11 00:17:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-11 00:17:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:47,875 INFO L225 Difference]: With dead ends: 141381 [2022-01-11 00:17:47,875 INFO L226 Difference]: Without dead ends: 83697 [2022-01-11 00:17:47,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:47,935 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 362 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:47,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1004 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83697 states. [2022-01-11 00:17:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83697 to 83405. [2022-01-11 00:17:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83405 states, 83403 states have (on average 1.2264546838842727) internal successors, (102290), 83404 states have internal predecessors, (102290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83405 states to 83405 states and 102290 transitions. [2022-01-11 00:17:52,309 INFO L78 Accepts]: Start accepts. Automaton has 83405 states and 102290 transitions. Word has length 164 [2022-01-11 00:17:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:52,310 INFO L470 AbstractCegarLoop]: Abstraction has 83405 states and 102290 transitions. [2022-01-11 00:17:52,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 83405 states and 102290 transitions. [2022-01-11 00:17:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 00:17:52,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:52,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:52,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:17:52,346 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1503832319, now seen corresponding path program 1 times [2022-01-11 00:17:52,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:52,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172278763] [2022-01-11 00:17:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:52,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:52,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172278763] [2022-01-11 00:17:52,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172278763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:52,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:52,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:52,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239466628] [2022-01-11 00:17:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:52,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:52,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:52,395 INFO L87 Difference]: Start difference. First operand 83405 states and 102290 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:17:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:57,891 INFO L93 Difference]: Finished difference Result 204153 states and 250402 transitions. [2022-01-11 00:17:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-01-11 00:17:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:58,226 INFO L225 Difference]: With dead ends: 204153 [2022-01-11 00:17:58,226 INFO L226 Difference]: Without dead ends: 120835 [2022-01-11 00:17:58,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:58,302 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 364 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:58,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 1002 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120835 states. [2022-01-11 00:18:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120835 to 120399. [2022-01-11 00:18:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120399 states, 120397 states have (on average 1.2206450326835385) internal successors, (146962), 120398 states have internal predecessors, (146962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120399 states to 120399 states and 146962 transitions. [2022-01-11 00:18:04,196 INFO L78 Accepts]: Start accepts. Automaton has 120399 states and 146962 transitions. Word has length 164 [2022-01-11 00:18:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:04,196 INFO L470 AbstractCegarLoop]: Abstraction has 120399 states and 146962 transitions. [2022-01-11 00:18:04,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 120399 states and 146962 transitions. [2022-01-11 00:18:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-11 00:18:04,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:04,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:04,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:18:04,285 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash -823700682, now seen corresponding path program 1 times [2022-01-11 00:18:04,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:04,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871976272] [2022-01-11 00:18:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:04,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-11 00:18:04,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871976272] [2022-01-11 00:18:04,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871976272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:04,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:04,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:04,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863289823] [2022-01-11 00:18:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:04,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:04,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:04,327 INFO L87 Difference]: Start difference. First operand 120399 states and 146962 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:10,114 INFO L93 Difference]: Finished difference Result 216541 states and 265023 transitions. [2022-01-11 00:18:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-01-11 00:18:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:10,449 INFO L225 Difference]: With dead ends: 216541 [2022-01-11 00:18:10,449 INFO L226 Difference]: Without dead ends: 123927 [2022-01-11 00:18:10,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,540 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 414 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:10,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1078 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123927 states. [2022-01-11 00:18:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123927 to 118959. [2022-01-11 00:18:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118959 states, 118957 states have (on average 1.2083862235933993) internal successors, (143746), 118958 states have internal predecessors, (143746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118959 states to 118959 states and 143746 transitions. [2022-01-11 00:18:16,405 INFO L78 Accepts]: Start accepts. Automaton has 118959 states and 143746 transitions. Word has length 183 [2022-01-11 00:18:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:16,405 INFO L470 AbstractCegarLoop]: Abstraction has 118959 states and 143746 transitions. [2022-01-11 00:18:16,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 118959 states and 143746 transitions. [2022-01-11 00:18:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-11 00:18:16,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:16,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:16,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:18:16,481 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1498234030, now seen corresponding path program 1 times [2022-01-11 00:18:16,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:16,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102167710] [2022-01-11 00:18:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:16,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 00:18:16,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:16,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102167710] [2022-01-11 00:18:16,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102167710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:16,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:16,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:16,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674341970] [2022-01-11 00:18:16,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:16,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:16,780 INFO L87 Difference]: Start difference. First operand 118959 states and 143746 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)