/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_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:28:10,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:28:10,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:28:10,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:28:10,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:28:10,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:28:10,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:28:10,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:28:10,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:28:10,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:28:10,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:28:10,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:28:10,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:28:10,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:28:10,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:28:10,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:28:10,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:28:10,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:28:10,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:28:10,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:28:10,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:28:10,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:28:10,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:28:10,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:28:10,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:28:10,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:28:10,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:28:10,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:28:10,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:28:10,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:28:10,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:28:10,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:28:10,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:28:10,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:28:10,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:28:10,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:28:10,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:28:10,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:28:10,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:28:10,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:28:10,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:28:10,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:28:10,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:28:10,426 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:28:10,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:28:10,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:28:10,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:28:10,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:28:10,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:28:10,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:28:10,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:28:10,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:28:10,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:28:10,429 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:28:10,429 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:28:10,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:28:10,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:28:10,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:28:10,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:28:10,631 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:28:10,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.09.cil-2.c [2022-01-10 18:28:10,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fdcae2c/9ac90c7f0c584028bf671d0e6f581b2b/FLAG125d8f9fa [2022-01-10 18:28:11,048 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:28:11,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.09.cil-2.c [2022-01-10 18:28:11,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fdcae2c/9ac90c7f0c584028bf671d0e6f581b2b/FLAG125d8f9fa [2022-01-10 18:28:11,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03fdcae2c/9ac90c7f0c584028bf671d0e6f581b2b [2022-01-10 18:28:11,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:28:11,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:28:11,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:28:11,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:28:11,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:28:11,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eabecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11, skipping insertion in model container [2022-01-10 18:28:11,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:28:11,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:28:11,654 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.09.cil-2.c[671,684] [2022-01-10 18:28:11,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:28:11,746 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:28:11,753 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.09.cil-2.c[671,684] [2022-01-10 18:28:11,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:28:11,801 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:28:11,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11 WrapperNode [2022-01-10 18:28:11,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:28:11,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:28:11,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:28:11,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:28:11,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,886 INFO L137 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 54, calls inlined = 183, statements flattened = 2769 [2022-01-10 18:28:11,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:28:11,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:28:11,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:28:11,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:28:11,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:28:11,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:28:11,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:28:11,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:28:11,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (1/1) ... [2022-01-10 18:28:11,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:28:11,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:28:12,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:28:12,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:28:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:28:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:28:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:28:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:28:12,168 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:28:12,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:28:13,338 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:28:13,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:28:13,380 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-10 18:28:13,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:28:13 BoogieIcfgContainer [2022-01-10 18:28:13,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:28:13,383 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:28:13,383 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:28:13,387 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:28:13,390 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:28:13" (1/1) ... [2022-01-10 18:28:13,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:28:13 BasicIcfg [2022-01-10 18:28:13,629 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:28:13,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:28:13,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:28:13,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:28:13,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:28:11" (1/4) ... [2022-01-10 18:28:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e71953c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:28:13, skipping insertion in model container [2022-01-10 18:28:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:28:11" (2/4) ... [2022-01-10 18:28:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e71953c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:28:13, skipping insertion in model container [2022-01-10 18:28:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:28:13" (3/4) ... [2022-01-10 18:28:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e71953c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:28:13, skipping insertion in model container [2022-01-10 18:28:13,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:28:13" (4/4) ... [2022-01-10 18:28:13,635 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.cTransformedIcfg [2022-01-10 18:28:13,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:28:13,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:28:13,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:28:13,689 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:28:13,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:28:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 1185 states, 1182 states have (on average 1.5126903553299493) internal successors, (1788), 1184 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:13,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:13,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:13,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1227413138, now seen corresponding path program 1 times [2022-01-10 18:28:13,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954445327] [2022-01-10 18:28:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:13,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:14,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:14,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954445327] [2022-01-10 18:28:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954445327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:14,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:14,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985501987] [2022-01-10 18:28:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:14,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:14,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:14,060 INFO L87 Difference]: Start difference. First operand has 1185 states, 1182 states have (on average 1.5126903553299493) internal successors, (1788), 1184 states have internal predecessors, (1788), 0 states have call successors, (0), 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 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:14,235 INFO L93 Difference]: Finished difference Result 2351 states and 3545 transitions. [2022-01-10 18:28:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:14,251 INFO L225 Difference]: With dead ends: 2351 [2022-01-10 18:28:14,251 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:14,258 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 [2022-01-10 18:28:14,260 INFO L933 BasicCegarLoop]: 1750 mSDtfsCounter, 1739 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1750 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 [2022-01-10 18:28:14,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 1750 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.48768054375531) internal successors, (1751), 1178 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1751 transitions. [2022-01-10 18:28:14,333 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1751 transitions. Word has length 131 [2022-01-10 18:28:14,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:14,334 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1751 transitions. [2022-01-10 18:28:14,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1751 transitions. [2022-01-10 18:28:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:14,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:14,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:14,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:28:14,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1384938674, now seen corresponding path program 1 times [2022-01-10 18:28:14,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:14,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442441781] [2022-01-10 18:28:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:14,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:14,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:14,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442441781] [2022-01-10 18:28:14,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442441781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:14,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:14,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902388634] [2022-01-10 18:28:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:14,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:14,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:14,441 INFO L87 Difference]: Start difference. First operand 1179 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:14,527 INFO L93 Difference]: Finished difference Result 2340 states and 3472 transitions. [2022-01-10 18:28:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:14,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:14,531 INFO L225 Difference]: With dead ends: 2340 [2022-01-10 18:28:14,532 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:14,537 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 [2022-01-10 18:28:14,538 INFO L933 BasicCegarLoop]: 1741 mSDtfsCounter, 1729 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 1741 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 [2022-01-10 18:28:14,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 1741 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4834324553950722) internal successors, (1746), 1178 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1746 transitions. [2022-01-10 18:28:14,565 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1746 transitions. Word has length 131 [2022-01-10 18:28:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:14,567 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1746 transitions. [2022-01-10 18:28:14,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1746 transitions. [2022-01-10 18:28:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:14,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:14,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:14,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:28:14,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash -420188818, now seen corresponding path program 1 times [2022-01-10 18:28:14,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:14,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880691303] [2022-01-10 18:28:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:14,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:14,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:14,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880691303] [2022-01-10 18:28:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880691303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:14,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:14,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717147646] [2022-01-10 18:28:14,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:14,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:14,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:14,670 INFO L87 Difference]: Start difference. First operand 1179 states and 1746 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:14,723 INFO L93 Difference]: Finished difference Result 2339 states and 3461 transitions. [2022-01-10 18:28:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:14,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:14,727 INFO L225 Difference]: With dead ends: 2339 [2022-01-10 18:28:14,727 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:14,730 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 [2022-01-10 18:28:14,734 INFO L933 BasicCegarLoop]: 1736 mSDtfsCounter, 1723 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 1736 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 [2022-01-10 18:28:14,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 1736 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4791843670348344) internal successors, (1741), 1178 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1741 transitions. [2022-01-10 18:28:14,760 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1741 transitions. Word has length 131 [2022-01-10 18:28:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:14,760 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1741 transitions. [2022-01-10 18:28:14,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1741 transitions. [2022-01-10 18:28:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:14,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:14,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:14,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:28:14,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash 580763470, now seen corresponding path program 1 times [2022-01-10 18:28:14,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:14,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873564] [2022-01-10 18:28:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:14,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:14,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:14,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873564] [2022-01-10 18:28:14,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963873564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:14,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:14,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873004857] [2022-01-10 18:28:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:14,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:14,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:14,833 INFO L87 Difference]: Start difference. First operand 1179 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:14,875 INFO L93 Difference]: Finished difference Result 2338 states and 3450 transitions. [2022-01-10 18:28:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:14,879 INFO L225 Difference]: With dead ends: 2338 [2022-01-10 18:28:14,880 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:14,881 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 [2022-01-10 18:28:14,885 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1717 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1731 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 [2022-01-10 18:28:14,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 1731 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4749362786745965) internal successors, (1736), 1178 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1736 transitions. [2022-01-10 18:28:14,932 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1736 transitions. Word has length 131 [2022-01-10 18:28:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:14,932 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1736 transitions. [2022-01-10 18:28:14,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1736 transitions. [2022-01-10 18:28:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:14,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:14,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:14,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:28:14,933 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1167241582, now seen corresponding path program 1 times [2022-01-10 18:28:14,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:14,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433997589] [2022-01-10 18:28:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:14,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:14,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433997589] [2022-01-10 18:28:14,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433997589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:14,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:14,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:14,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112529974] [2022-01-10 18:28:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:14,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:14,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:14,988 INFO L87 Difference]: Start difference. First operand 1179 states and 1736 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,051 INFO L93 Difference]: Finished difference Result 2337 states and 3439 transitions. [2022-01-10 18:28:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,056 INFO L225 Difference]: With dead ends: 2337 [2022-01-10 18:28:15,056 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,058 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 [2022-01-10 18:28:15,059 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 1711 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1726 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 [2022-01-10 18:28:15,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 1726 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4706881903143585) internal successors, (1731), 1178 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1731 transitions. [2022-01-10 18:28:15,101 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1731 transitions. Word has length 131 [2022-01-10 18:28:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,102 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1731 transitions. [2022-01-10 18:28:15,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1731 transitions. [2022-01-10 18:28:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:28:15,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 354876238, now seen corresponding path program 1 times [2022-01-10 18:28:15,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495737886] [2022-01-10 18:28:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:15,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495737886] [2022-01-10 18:28:15,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495737886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:15,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:15,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:15,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631556121] [2022-01-10 18:28:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:15,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:15,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:15,175 INFO L87 Difference]: Start difference. First operand 1179 states and 1731 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,245 INFO L93 Difference]: Finished difference Result 2336 states and 3428 transitions. [2022-01-10 18:28:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,250 INFO L225 Difference]: With dead ends: 2336 [2022-01-10 18:28:15,250 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,253 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 [2022-01-10 18:28:15,254 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1705 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1721 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 [2022-01-10 18:28:15,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 1721 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4664401019541207) internal successors, (1726), 1178 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1726 transitions. [2022-01-10 18:28:15,298 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1726 transitions. Word has length 131 [2022-01-10 18:28:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,298 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1726 transitions. [2022-01-10 18:28:15,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1726 transitions. [2022-01-10 18:28:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:28:15,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2129786222, now seen corresponding path program 1 times [2022-01-10 18:28:15,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843005071] [2022-01-10 18:28:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:15,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843005071] [2022-01-10 18:28:15,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843005071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:15,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:15,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:15,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823990331] [2022-01-10 18:28:15,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:15,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:15,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:15,391 INFO L87 Difference]: Start difference. First operand 1179 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,450 INFO L93 Difference]: Finished difference Result 2335 states and 3417 transitions. [2022-01-10 18:28:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,456 INFO L225 Difference]: With dead ends: 2335 [2022-01-10 18:28:15,456 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,458 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 [2022-01-10 18:28:15,458 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 1699 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1716 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 [2022-01-10 18:28:15,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1699 Valid, 1716 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4621920135938828) internal successors, (1721), 1178 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1721 transitions. [2022-01-10 18:28:15,540 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1721 transitions. Word has length 131 [2022-01-10 18:28:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,540 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1721 transitions. [2022-01-10 18:28:15,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1721 transitions. [2022-01-10 18:28:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:28:15,542 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1355757390, now seen corresponding path program 1 times [2022-01-10 18:28:15,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966005221] [2022-01-10 18:28:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:15,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:15,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966005221] [2022-01-10 18:28:15,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966005221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:15,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:15,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:15,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137680845] [2022-01-10 18:28:15,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:15,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:15,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:15,574 INFO L87 Difference]: Start difference. First operand 1179 states and 1721 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,622 INFO L93 Difference]: Finished difference Result 2333 states and 3404 transitions. [2022-01-10 18:28:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,626 INFO L225 Difference]: With dead ends: 2333 [2022-01-10 18:28:15,626 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,627 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 [2022-01-10 18:28:15,628 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 1692 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 1711 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 [2022-01-10 18:28:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 1711 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4579439252336448) internal successors, (1716), 1178 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1716 transitions. [2022-01-10 18:28:15,660 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1716 transitions. Word has length 131 [2022-01-10 18:28:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,661 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1716 transitions. [2022-01-10 18:28:15,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1716 transitions. [2022-01-10 18:28:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:28:15,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1831636690, now seen corresponding path program 1 times [2022-01-10 18:28:15,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638049924] [2022-01-10 18:28:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:15,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:15,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638049924] [2022-01-10 18:28:15,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638049924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:15,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:15,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:15,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768541206] [2022-01-10 18:28:15,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:15,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:15,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:15,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:15,693 INFO L87 Difference]: Start difference. First operand 1179 states and 1716 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,777 INFO L93 Difference]: Finished difference Result 2332 states and 3393 transitions. [2022-01-10 18:28:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,781 INFO L225 Difference]: With dead ends: 2332 [2022-01-10 18:28:15,781 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,782 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 [2022-01-10 18:28:15,783 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 1572 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:15,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 1780 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4435004248088361) internal successors, (1699), 1178 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1699 transitions. [2022-01-10 18:28:15,826 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1699 transitions. Word has length 131 [2022-01-10 18:28:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,827 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1699 transitions. [2022-01-10 18:28:15,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1699 transitions. [2022-01-10 18:28:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:28:15,828 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1278681805, now seen corresponding path program 1 times [2022-01-10 18:28:15,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014655301] [2022-01-10 18:28:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:15,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:15,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014655301] [2022-01-10 18:28:15,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014655301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:15,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:15,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:15,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822559395] [2022-01-10 18:28:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:15,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:15,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:15,860 INFO L87 Difference]: Start difference. First operand 1179 states and 1699 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:15,936 INFO L93 Difference]: Finished difference Result 2331 states and 3358 transitions. [2022-01-10 18:28:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:15,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:15,940 INFO L225 Difference]: With dead ends: 2331 [2022-01-10 18:28:15,940 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:15,941 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 [2022-01-10 18:28:15,942 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1555 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:15,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 1762 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4290569243840272) internal successors, (1682), 1178 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1682 transitions. [2022-01-10 18:28:15,981 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1682 transitions. Word has length 131 [2022-01-10 18:28:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:15,981 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1682 transitions. [2022-01-10 18:28:15,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1682 transitions. [2022-01-10 18:28:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:15,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:15,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:15,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:28:15,982 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash -109164692, now seen corresponding path program 1 times [2022-01-10 18:28:15,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:15,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657109816] [2022-01-10 18:28:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:15,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657109816] [2022-01-10 18:28:16,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657109816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559933898] [2022-01-10 18:28:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,021 INFO L87 Difference]: Start difference. First operand 1179 states and 1682 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,096 INFO L93 Difference]: Finished difference Result 2330 states and 3323 transitions. [2022-01-10 18:28:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,101 INFO L225 Difference]: With dead ends: 2330 [2022-01-10 18:28:16,101 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,102 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 [2022-01-10 18:28:16,103 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1538 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1744 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4146134239592183) internal successors, (1665), 1178 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1665 transitions. [2022-01-10 18:28:16,171 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1665 transitions. Word has length 131 [2022-01-10 18:28:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,172 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1665 transitions. [2022-01-10 18:28:16,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1665 transitions. [2022-01-10 18:28:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:28:16,173 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1911949195, now seen corresponding path program 1 times [2022-01-10 18:28:16,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841025947] [2022-01-10 18:28:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841025947] [2022-01-10 18:28:16,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841025947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064721318] [2022-01-10 18:28:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,211 INFO L87 Difference]: Start difference. First operand 1179 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,286 INFO L93 Difference]: Finished difference Result 2329 states and 3288 transitions. [2022-01-10 18:28:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,289 INFO L225 Difference]: With dead ends: 2329 [2022-01-10 18:28:16,289 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,291 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 [2022-01-10 18:28:16,292 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1521 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 1726 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.4001699235344096) internal successors, (1648), 1178 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1648 transitions. [2022-01-10 18:28:16,332 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1648 transitions. Word has length 131 [2022-01-10 18:28:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,332 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1648 transitions. [2022-01-10 18:28:16,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1648 transitions. [2022-01-10 18:28:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:28:16,334 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1059124566, now seen corresponding path program 1 times [2022-01-10 18:28:16,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230275303] [2022-01-10 18:28:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230275303] [2022-01-10 18:28:16,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230275303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841172710] [2022-01-10 18:28:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,366 INFO L87 Difference]: Start difference. First operand 1179 states and 1648 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,445 INFO L93 Difference]: Finished difference Result 2328 states and 3253 transitions. [2022-01-10 18:28:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,449 INFO L225 Difference]: With dead ends: 2328 [2022-01-10 18:28:16,449 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,451 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 [2022-01-10 18:28:16,452 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 1504 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 1708 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.3857264231096007) internal successors, (1631), 1178 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1631 transitions. [2022-01-10 18:28:16,491 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1631 transitions. Word has length 131 [2022-01-10 18:28:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,491 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1631 transitions. [2022-01-10 18:28:16,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1631 transitions. [2022-01-10 18:28:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:28:16,492 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash -356345527, now seen corresponding path program 1 times [2022-01-10 18:28:16,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204021682] [2022-01-10 18:28:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204021682] [2022-01-10 18:28:16,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204021682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861315814] [2022-01-10 18:28:16,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,523 INFO L87 Difference]: Start difference. First operand 1179 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,601 INFO L93 Difference]: Finished difference Result 2327 states and 3218 transitions. [2022-01-10 18:28:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,604 INFO L225 Difference]: With dead ends: 2327 [2022-01-10 18:28:16,604 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,605 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 [2022-01-10 18:28:16,606 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 1487 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1690 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.3712829226847918) internal successors, (1614), 1178 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1614 transitions. [2022-01-10 18:28:16,651 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1614 transitions. Word has length 131 [2022-01-10 18:28:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,651 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1614 transitions. [2022-01-10 18:28:16,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1614 transitions. [2022-01-10 18:28:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:28:16,652 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1978743528, now seen corresponding path program 1 times [2022-01-10 18:28:16,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985267263] [2022-01-10 18:28:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985267263] [2022-01-10 18:28:16,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985267263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2362395] [2022-01-10 18:28:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,692 INFO L87 Difference]: Start difference. First operand 1179 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,766 INFO L93 Difference]: Finished difference Result 2325 states and 3181 transitions. [2022-01-10 18:28:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,770 INFO L225 Difference]: With dead ends: 2325 [2022-01-10 18:28:16,770 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,772 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 [2022-01-10 18:28:16,773 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1469 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1672 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.356839422259983) internal successors, (1597), 1178 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1597 transitions. [2022-01-10 18:28:16,815 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1597 transitions. Word has length 131 [2022-01-10 18:28:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,815 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1597 transitions. [2022-01-10 18:28:16,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1597 transitions. [2022-01-10 18:28:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:28:16,816 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1109998343, now seen corresponding path program 1 times [2022-01-10 18:28:16,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773510796] [2022-01-10 18:28:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:16,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:16,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773510796] [2022-01-10 18:28:16,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773510796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:16,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:16,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:16,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250943968] [2022-01-10 18:28:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:16,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:16,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:16,852 INFO L87 Difference]: Start difference. First operand 1179 states and 1597 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:16,944 INFO L93 Difference]: Finished difference Result 2324 states and 3146 transitions. [2022-01-10 18:28:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:16,948 INFO L225 Difference]: With dead ends: 2324 [2022-01-10 18:28:16,948 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:16,949 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 [2022-01-10 18:28:16,949 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 1452 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:16,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 1654 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.3423959218351742) internal successors, (1580), 1178 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1580 transitions. [2022-01-10 18:28:16,990 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1580 transitions. Word has length 131 [2022-01-10 18:28:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:16,990 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1580 transitions. [2022-01-10 18:28:16,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1580 transitions. [2022-01-10 18:28:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:16,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:16,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:16,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:28:16,992 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1114351270, now seen corresponding path program 1 times [2022-01-10 18:28:16,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:16,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793534645] [2022-01-10 18:28:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:16,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:17,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:17,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793534645] [2022-01-10 18:28:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793534645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:17,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:17,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:17,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544973943] [2022-01-10 18:28:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:17,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:17,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:17,022 INFO L87 Difference]: Start difference. First operand 1179 states and 1580 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:17,096 INFO L93 Difference]: Finished difference Result 2323 states and 3111 transitions. [2022-01-10 18:28:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:17,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:17,099 INFO L225 Difference]: With dead ends: 2323 [2022-01-10 18:28:17,099 INFO L226 Difference]: Without dead ends: 1179 [2022-01-10 18:28:17,101 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 [2022-01-10 18:28:17,101 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 1435 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:17,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1435 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-10 18:28:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-01-10 18:28:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.3279524214103653) internal successors, (1563), 1178 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1563 transitions. [2022-01-10 18:28:17,152 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1563 transitions. Word has length 131 [2022-01-10 18:28:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:17,152 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1563 transitions. [2022-01-10 18:28:17,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1563 transitions. [2022-01-10 18:28:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:17,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:17,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:17,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:28:17,154 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1903114939, now seen corresponding path program 1 times [2022-01-10 18:28:17,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:17,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087089492] [2022-01-10 18:28:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:17,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:17,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:17,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087089492] [2022-01-10 18:28:17,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087089492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:17,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:17,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:28:17,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956354316] [2022-01-10 18:28:17,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:28:17,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:17,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:28:17,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:28:17,207 INFO L87 Difference]: Start difference. First operand 1179 states and 1563 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:17,431 INFO L93 Difference]: Finished difference Result 2759 states and 3684 transitions. [2022-01-10 18:28:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:28:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:17,438 INFO L225 Difference]: With dead ends: 2759 [2022-01-10 18:28:17,438 INFO L226 Difference]: Without dead ends: 1629 [2022-01-10 18:28:17,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:28:17,441 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 4305 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:17,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 3565 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:28:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-01-10 18:28:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1182. [2022-01-10 18:28:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1180 states have (on average 1.3169491525423729) internal successors, (1554), 1181 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1554 transitions. [2022-01-10 18:28:17,514 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1554 transitions. Word has length 131 [2022-01-10 18:28:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:17,514 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1554 transitions. [2022-01-10 18:28:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1554 transitions. [2022-01-10 18:28:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:17,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:17,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:17,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:28:17,516 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1182610118, now seen corresponding path program 1 times [2022-01-10 18:28:17,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832609896] [2022-01-10 18:28:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:17,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:17,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:17,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832609896] [2022-01-10 18:28:17,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832609896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:17,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:17,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:17,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87637649] [2022-01-10 18:28:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:17,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:17,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:17,565 INFO L87 Difference]: Start difference. First operand 1182 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:17,735 INFO L93 Difference]: Finished difference Result 3254 states and 4275 transitions. [2022-01-10 18:28:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:17,741 INFO L225 Difference]: With dead ends: 3254 [2022-01-10 18:28:17,741 INFO L226 Difference]: Without dead ends: 2151 [2022-01-10 18:28:17,743 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 [2022-01-10 18:28:17,743 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1345 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:17,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 2894 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-01-10 18:28:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2145. [2022-01-10 18:28:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2143 states have (on average 1.3103126458236118) internal successors, (2808), 2144 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2808 transitions. [2022-01-10 18:28:17,900 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2808 transitions. Word has length 131 [2022-01-10 18:28:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:17,900 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 2808 transitions. [2022-01-10 18:28:17,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2808 transitions. [2022-01-10 18:28:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:17,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:17,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:28:17,901 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1896689093, now seen corresponding path program 1 times [2022-01-10 18:28:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:17,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286860713] [2022-01-10 18:28:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:17,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:17,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286860713] [2022-01-10 18:28:17,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286860713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:17,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:17,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:28:17,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693563014] [2022-01-10 18:28:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:17,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:28:17,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:28:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:28:17,952 INFO L87 Difference]: Start difference. First operand 2145 states and 2808 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:18,329 INFO L93 Difference]: Finished difference Result 5702 states and 7476 transitions. [2022-01-10 18:28:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:28:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:18,349 INFO L225 Difference]: With dead ends: 5702 [2022-01-10 18:28:18,349 INFO L226 Difference]: Without dead ends: 3640 [2022-01-10 18:28:18,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:28:18,352 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 3989 mSDsluCounter, 5603 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:18,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3989 Valid, 7174 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:28:18,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-10 18:28:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 2181. [2022-01-10 18:28:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2179 states have (on average 1.299678751720973) internal successors, (2832), 2180 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2832 transitions. [2022-01-10 18:28:18,470 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2832 transitions. Word has length 131 [2022-01-10 18:28:18,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:18,470 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 2832 transitions. [2022-01-10 18:28:18,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2832 transitions. [2022-01-10 18:28:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:18,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:18,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:28:18,471 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1704885498, now seen corresponding path program 1 times [2022-01-10 18:28:18,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699734019] [2022-01-10 18:28:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:18,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:18,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699734019] [2022-01-10 18:28:18,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699734019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:18,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:18,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:18,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777888933] [2022-01-10 18:28:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:18,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:18,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:18,524 INFO L87 Difference]: Start difference. First operand 2181 states and 2832 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:18,765 INFO L93 Difference]: Finished difference Result 6255 states and 8125 transitions. [2022-01-10 18:28:18,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:18,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:18,772 INFO L225 Difference]: With dead ends: 6255 [2022-01-10 18:28:18,772 INFO L226 Difference]: Without dead ends: 4090 [2022-01-10 18:28:18,775 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 [2022-01-10 18:28:18,776 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1353 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2922 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 [2022-01-10 18:28:18,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 2922 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-01-10 18:28:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4086. [2022-01-10 18:28:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4084 states have (on average 1.3006856023506366) internal successors, (5312), 4085 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 5312 transitions. [2022-01-10 18:28:19,028 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 5312 transitions. Word has length 131 [2022-01-10 18:28:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 5312 transitions. [2022-01-10 18:28:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 5312 transitions. [2022-01-10 18:28:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:19,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:19,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:19,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:28:19,030 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 20595399, now seen corresponding path program 1 times [2022-01-10 18:28:19,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587170003] [2022-01-10 18:28:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:19,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:19,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:19,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587170003] [2022-01-10 18:28:19,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587170003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:19,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:19,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:19,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990323752] [2022-01-10 18:28:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:19,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:19,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:19,087 INFO L87 Difference]: Start difference. First operand 4086 states and 5312 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:19,342 INFO L93 Difference]: Finished difference Result 8148 states and 10589 transitions. [2022-01-10 18:28:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:19,348 INFO L225 Difference]: With dead ends: 8148 [2022-01-10 18:28:19,348 INFO L226 Difference]: Without dead ends: 4086 [2022-01-10 18:28:19,354 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 [2022-01-10 18:28:19,355 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1436 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1535 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 [2022-01-10 18:28:19,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 1535 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4086 states. [2022-01-10 18:28:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 4086. [2022-01-10 18:28:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4084 states have (on average 1.2972575905974535) internal successors, (5298), 4085 states have internal predecessors, (5298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 5298 transitions. [2022-01-10 18:28:19,666 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 5298 transitions. Word has length 131 [2022-01-10 18:28:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:19,666 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 5298 transitions. [2022-01-10 18:28:19,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 5298 transitions. [2022-01-10 18:28:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:19,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:19,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:19,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:28:19,667 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 982209416, now seen corresponding path program 1 times [2022-01-10 18:28:19,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:19,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910800448] [2022-01-10 18:28:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:19,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:19,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:19,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910800448] [2022-01-10 18:28:19,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910800448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:19,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:19,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:19,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508693211] [2022-01-10 18:28:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:19,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:19,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:19,714 INFO L87 Difference]: Start difference. First operand 4086 states and 5298 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:19,945 INFO L93 Difference]: Finished difference Result 8077 states and 10469 transitions. [2022-01-10 18:28:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:19,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:19,951 INFO L225 Difference]: With dead ends: 8077 [2022-01-10 18:28:19,951 INFO L226 Difference]: Without dead ends: 4023 [2022-01-10 18:28:19,955 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 [2022-01-10 18:28:19,955 INFO L933 BasicCegarLoop]: 1497 mSDtfsCounter, 1309 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:19,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 1585 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2022-01-10 18:28:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 4023. [2022-01-10 18:28:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 4021 states have (on average 1.2879880626709774) internal successors, (5179), 4022 states have internal predecessors, (5179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 5179 transitions. [2022-01-10 18:28:20,148 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 5179 transitions. Word has length 131 [2022-01-10 18:28:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 4023 states and 5179 transitions. [2022-01-10 18:28:20,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 5179 transitions. [2022-01-10 18:28:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 18:28:20,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:20,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:20,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:28:20,149 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 137737545, now seen corresponding path program 1 times [2022-01-10 18:28:20,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:20,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087863229] [2022-01-10 18:28:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:20,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:20,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:20,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087863229] [2022-01-10 18:28:20,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087863229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:20,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:20,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:28:20,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089424486] [2022-01-10 18:28:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:20,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:20,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:20,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:20,190 INFO L87 Difference]: Start difference. First operand 4023 states and 5179 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:20,619 INFO L93 Difference]: Finished difference Result 11825 states and 15225 transitions. [2022-01-10 18:28:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 18:28:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:20,631 INFO L225 Difference]: With dead ends: 11825 [2022-01-10 18:28:20,631 INFO L226 Difference]: Without dead ends: 7839 [2022-01-10 18:28:20,635 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 [2022-01-10 18:28:20,635 INFO L933 BasicCegarLoop]: 1497 mSDtfsCounter, 1340 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:20,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 2828 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2022-01-10 18:28:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 7553. [2022-01-10 18:28:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7553 states, 7551 states have (on average 1.2826115746258773) internal successors, (9685), 7552 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 9685 transitions. [2022-01-10 18:28:21,031 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 9685 transitions. Word has length 131 [2022-01-10 18:28:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:21,032 INFO L470 AbstractCegarLoop]: Abstraction has 7553 states and 9685 transitions. [2022-01-10 18:28:21,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 9685 transitions. [2022-01-10 18:28:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-10 18:28:21,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:21,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:21,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:28:21,036 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash -655479923, now seen corresponding path program 1 times [2022-01-10 18:28:21,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:21,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445646013] [2022-01-10 18:28:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:21,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:21,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:21,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445646013] [2022-01-10 18:28:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445646013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:21,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:21,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:21,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166828130] [2022-01-10 18:28:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:21,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:21,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:21,088 INFO L87 Difference]: Start difference. First operand 7553 states and 9685 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:22,003 INFO L93 Difference]: Finished difference Result 22318 states and 28648 transitions. [2022-01-10 18:28:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2022-01-10 18:28:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:22,025 INFO L225 Difference]: With dead ends: 22318 [2022-01-10 18:28:22,025 INFO L226 Difference]: Without dead ends: 14808 [2022-01-10 18:28:22,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:22,032 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 1374 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:22,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2825 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:28:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14808 states. [2022-01-10 18:28:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14808 to 14296. [2022-01-10 18:28:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14294 states have (on average 1.2801874912550721) internal successors, (18299), 14295 states have internal predecessors, (18299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 18299 transitions. [2022-01-10 18:28:22,791 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 18299 transitions. Word has length 213 [2022-01-10 18:28:22,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:22,792 INFO L470 AbstractCegarLoop]: Abstraction has 14296 states and 18299 transitions. [2022-01-10 18:28:22,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 18299 transitions. [2022-01-10 18:28:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-10 18:28:22,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:22,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:22,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:28:22,798 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 620161997, now seen corresponding path program 1 times [2022-01-10 18:28:22,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:22,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107444868] [2022-01-10 18:28:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:22,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:22,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:22,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107444868] [2022-01-10 18:28:22,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107444868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:22,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:22,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:22,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962636849] [2022-01-10 18:28:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:22,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:22,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:22,866 INFO L87 Difference]: Start difference. First operand 14296 states and 18299 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:24,301 INFO L93 Difference]: Finished difference Result 41734 states and 53148 transitions. [2022-01-10 18:28:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2022-01-10 18:28:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:24,336 INFO L225 Difference]: With dead ends: 41734 [2022-01-10 18:28:24,336 INFO L226 Difference]: Without dead ends: 27562 [2022-01-10 18:28:24,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:24,353 INFO L933 BasicCegarLoop]: 2359 mSDtfsCounter, 1168 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3848 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 [2022-01-10 18:28:24,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 3848 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27562 states. [2022-01-10 18:28:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27562 to 27558. [2022-01-10 18:28:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27558 states, 27556 states have (on average 1.267673102046741) internal successors, (34932), 27557 states have internal predecessors, (34932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 34932 transitions. [2022-01-10 18:28:25,944 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 34932 transitions. Word has length 213 [2022-01-10 18:28:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:25,945 INFO L470 AbstractCegarLoop]: Abstraction has 27558 states and 34932 transitions. [2022-01-10 18:28:25,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 34932 transitions. [2022-01-10 18:28:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-10 18:28:25,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:25,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:25,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:28:25,957 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1964154452, now seen corresponding path program 1 times [2022-01-10 18:28:25,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:25,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317469597] [2022-01-10 18:28:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:25,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:28:25,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317469597] [2022-01-10 18:28:25,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317469597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:25,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:25,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:25,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173268167] [2022-01-10 18:28:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:25,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:25,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:25,990 INFO L87 Difference]: Start difference. First operand 27558 states and 34932 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:27,355 INFO L93 Difference]: Finished difference Result 54874 states and 69574 transitions. [2022-01-10 18:28:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 213 [2022-01-10 18:28:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:27,390 INFO L225 Difference]: With dead ends: 54874 [2022-01-10 18:28:27,390 INFO L226 Difference]: Without dead ends: 27440 [2022-01-10 18:28:27,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:27,420 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 1503 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1507 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 [2022-01-10 18:28:27,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1507 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27440 states. [2022-01-10 18:28:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27440 to 27440. [2022-01-10 18:28:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27440 states, 27438 states have (on average 1.2679495590057583) internal successors, (34790), 27439 states have internal predecessors, (34790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27440 states to 27440 states and 34790 transitions. [2022-01-10 18:28:29,219 INFO L78 Accepts]: Start accepts. Automaton has 27440 states and 34790 transitions. Word has length 213 [2022-01-10 18:28:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:29,219 INFO L470 AbstractCegarLoop]: Abstraction has 27440 states and 34790 transitions. [2022-01-10 18:28:29,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27440 states and 34790 transitions. [2022-01-10 18:28:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 18:28:29,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:29,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:29,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 18:28:29,228 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1412014655, now seen corresponding path program 1 times [2022-01-10 18:28:29,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:29,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766165795] [2022-01-10 18:28:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:29,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:29,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:29,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766165795] [2022-01-10 18:28:29,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766165795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:29,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:29,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:29,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064152289] [2022-01-10 18:28:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:29,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:29,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:29,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:29,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:29,282 INFO L87 Difference]: Start difference. First operand 27440 states and 34790 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:32,214 INFO L93 Difference]: Finished difference Result 81085 states and 102549 transitions. [2022-01-10 18:28:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-01-10 18:28:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:32,302 INFO L225 Difference]: With dead ends: 81085 [2022-01-10 18:28:32,302 INFO L226 Difference]: Without dead ends: 53769 [2022-01-10 18:28:32,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:32,339 INFO L933 BasicCegarLoop]: 1889 mSDtfsCounter, 1366 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:32,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 3364 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53769 states. [2022-01-10 18:28:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53769 to 52085. [2022-01-10 18:28:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52085 states, 52083 states have (on average 1.2616976748651192) internal successors, (65713), 52084 states have internal predecessors, (65713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52085 states to 52085 states and 65713 transitions. [2022-01-10 18:28:35,401 INFO L78 Accepts]: Start accepts. Automaton has 52085 states and 65713 transitions. Word has length 214 [2022-01-10 18:28:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 52085 states and 65713 transitions. [2022-01-10 18:28:35,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 52085 states and 65713 transitions. [2022-01-10 18:28:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 18:28:35,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:35,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:35,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 18:28:35,426 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1086741474, now seen corresponding path program 1 times [2022-01-10 18:28:35,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:35,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808687334] [2022-01-10 18:28:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:35,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:28:35,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808687334] [2022-01-10 18:28:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808687334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:35,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:35,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:35,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792049885] [2022-01-10 18:28:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:35,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:35,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:35,492 INFO L87 Difference]: Start difference. First operand 52085 states and 65713 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:38,860 INFO L93 Difference]: Finished difference Result 103999 states and 131221 transitions. [2022-01-10 18:28:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 214 [2022-01-10 18:28:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:38,939 INFO L225 Difference]: With dead ends: 103999 [2022-01-10 18:28:38,939 INFO L226 Difference]: Without dead ends: 51968 [2022-01-10 18:28:38,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:38,979 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 1501 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1506 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 [2022-01-10 18:28:38,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1501 Valid, 1506 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51968 states. [2022-01-10 18:28:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51968 to 51968. [2022-01-10 18:28:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51968 states, 51966 states have (on average 1.2618442828002925) internal successors, (65573), 51967 states have internal predecessors, (65573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51968 states to 51968 states and 65573 transitions. [2022-01-10 18:28:42,158 INFO L78 Accepts]: Start accepts. Automaton has 51968 states and 65573 transitions. Word has length 214 [2022-01-10 18:28:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:42,158 INFO L470 AbstractCegarLoop]: Abstraction has 51968 states and 65573 transitions. [2022-01-10 18:28:42,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 51968 states and 65573 transitions. [2022-01-10 18:28:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 18:28:42,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:42,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:42,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 18:28:42,174 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1463532864, now seen corresponding path program 1 times [2022-01-10 18:28:42,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:42,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52566642] [2022-01-10 18:28:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:42,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:28:42,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52566642] [2022-01-10 18:28:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52566642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:42,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:42,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859017947] [2022-01-10 18:28:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:42,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:42,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:42,234 INFO L87 Difference]: Start difference. First operand 51968 states and 65573 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:28:48,182 INFO L93 Difference]: Finished difference Result 153500 states and 193426 transitions. [2022-01-10 18:28:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:28:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-01-10 18:28:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:28:48,343 INFO L225 Difference]: With dead ends: 153500 [2022-01-10 18:28:48,343 INFO L226 Difference]: Without dead ends: 101656 [2022-01-10 18:28:48,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:48,398 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 1366 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:28:48,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 3380 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:28:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101656 states. [2022-01-10 18:28:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101656 to 98740. [2022-01-10 18:28:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98740 states, 98738 states have (on average 1.2582592315015495) internal successors, (124238), 98739 states have internal predecessors, (124238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98740 states to 98740 states and 124238 transitions. [2022-01-10 18:28:54,365 INFO L78 Accepts]: Start accepts. Automaton has 98740 states and 124238 transitions. Word has length 215 [2022-01-10 18:28:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:28:54,366 INFO L470 AbstractCegarLoop]: Abstraction has 98740 states and 124238 transitions. [2022-01-10 18:28:54,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:28:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 98740 states and 124238 transitions. [2022-01-10 18:28:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 18:28:54,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:28:54,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:28:54,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 18:28:54,399 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:28:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:28:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1157067807, now seen corresponding path program 1 times [2022-01-10 18:28:54,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:28:54,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665990801] [2022-01-10 18:28:54,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:28:54,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:28:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:28:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 18:28:54,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:28:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665990801] [2022-01-10 18:28:54,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665990801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:28:54,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:28:54,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:28:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342762662] [2022-01-10 18:28:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:28:54,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:28:54,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:28:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:28:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:28:54,478 INFO L87 Difference]: Start difference. First operand 98740 states and 124238 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:29:00,584 INFO L93 Difference]: Finished difference Result 197303 states and 248265 transitions. [2022-01-10 18:29:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:29:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 215 [2022-01-10 18:29:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:29:00,751 INFO L225 Difference]: With dead ends: 197303 [2022-01-10 18:29:00,751 INFO L226 Difference]: Without dead ends: 98624 [2022-01-10 18:29:00,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:00,823 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 1499 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1505 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 [2022-01-10 18:29:00,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1505 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:29:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98624 states. [2022-01-10 18:29:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98624 to 98624. [2022-01-10 18:29:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98624 states, 98622 states have (on average 1.2583399241548539) internal successors, (124100), 98623 states have internal predecessors, (124100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98624 states to 98624 states and 124100 transitions. [2022-01-10 18:29:07,231 INFO L78 Accepts]: Start accepts. Automaton has 98624 states and 124100 transitions. Word has length 215 [2022-01-10 18:29:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:29:07,232 INFO L470 AbstractCegarLoop]: Abstraction has 98624 states and 124100 transitions. [2022-01-10 18:29:07,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:29:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 98624 states and 124100 transitions. [2022-01-10 18:29:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 18:29:07,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:29:07,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:29:07,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 18:29:07,257 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:29:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:29:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1257400494, now seen corresponding path program 1 times [2022-01-10 18:29:07,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:29:07,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465404872] [2022-01-10 18:29:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:29:07,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:29:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:29:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:29:07,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:29:07,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465404872] [2022-01-10 18:29:07,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465404872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:29:07,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:29:07,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:29:07,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774285553] [2022-01-10 18:29:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:29:07,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:29:07,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:29:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:29:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:29:07,301 INFO L87 Difference]: Start difference. First operand 98624 states and 124100 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)